Traffic congestion is a serious and growing problem in the U.S.,
particularly in major metropolitan areas. Much of the congestion is in
critical metropolitan corridors that link activity centers and carry
high volumes of people and goods. These corridors are typically
comprised of several independent transportation networks, such as
freeways, arterials, bus routes, and rail transit lines. Freeway and
arterial networks are often subject to unrestrained demands
significantly greater than available capacity. Capacity is often
reduced at bottleneck locations, such as major interchanges and
bridges. Transit buses operating on congested arterials and freeways
are typically delayed in traffic along with other vehicles on the
roadway.
The current state-of-the-practice in corridor management is highly
disaggregated. To date, efforts to reduce congestion have focused on
managing transportation networks within corridors individually. The
ability to shift travel demands between facilities and modes (i.e.,
networks[1]) during
traffic incidents, roadway work zone activity, adverse weather, or
simply unusually large traffic demands is severely hampered by lack of
information about current conditions and lack of standardized technical
means for sharing that information. The lack of institutional
collaboration and coordination and the lack of integrated operational
strategies and procedures further impede optimizing the performance of
the corridor. The state-of-the-practice is far from the
state-of-the-art. ITS methods that are available to address corridor
management are not widely deployed. To achieve effective corridor
management, much work needs to be done on advancing the
state-of-the-practice in institutional, operational, and technical
integration.
The U.S. Department of Transportation (DOT) Intelligent
Transportation Systems (ITS) Joint Program Office (JPO) recently began
the Integrated Corridor Management (ICM) Initiative to improve safety
and mobility within corridors, and to advance the development and
deployment of ICM systems throughout the United States. The ICM
Initiative is the only one of the nine ITS Program Tier I Initiatives
that directly addresses congestion.
Integrated corridor management is defined as consisting of the
operational coordination of specific transportation networks and
cross-network connections comprising a corridor, and the coordination
of institutions responsible for corridor mobility. ICM will improve
mobility, safety, and other transportation objectives for travelers and
goods. The integrated corridor must have the capability of being
managed. In addition, for the purposes of this initiative, a
corridor is defined as a largely linear geographic band in a
metropolitan region defined by existing and forecasted travel patterns
involving both people and goods. The corridor serves a particular
travel market or markets that are affected by similar transportation
needs and mobility issues. The corridor includes various networks
(e.g., limited access facility, surface arterial(s), transit, bicycle,
pedestrian pathway, and waterway) that provide similar or complementary
transportation function. Additionally, the corridor includes
cross-network connections that permit the individual networks to be
readily accessible from each other.
The key to managing corridors effectively is achieving integration
among the operations of different networks in the corridor. As stated
earlier, efforts to reduce congestion have mainly focused on the
optimization of individual networks. Each network is usually operated
in isolation except for limited coordination at network junctions. This
lack of coordinated operations between networks prevents effective use
of a combination of these networks to address recurring and
non-recurring congestion. A coordinated effort between networks along a
corridor can effectively manage the total capacity of a corridor in a
way that will result in reduced congestion and increased trip
reliability.
Metropolitan areas will realize significant improvements in the
efficient movement of people and goods through aggressive and proactive
integration and management of major transportation corridors.
Integrated corridor management will result in a reduction in travel
times, delays, fuel consumption, emissions, and incidents, and an
increase in reliability and predictability of travel.
The goal of the ICM Initiative is to develop and provide the
institutional guidance, operational capabilities, and ITS technical
methods needed for effective integrated corridor management.
The initiative will demonstrate how transportation operations
strategies and ITS technologies can be used to efficiently and
proactively manage the movement of people and goods in major
transportation corridors through integration of the operations of the
networks in a corridor. This initiative will develop a toolbox of
operational policies, cross-network operational strategies, integration
requirements and methods, and analysis tools needed to implement
effective integrated corridor management. As a part of this effort, the
U.S. DOT will select several metropolitan corridor sites to perform ICM
analyses, modeling, and simulations in the corridors. The U.S. DOT will
also conduct one or more demonstration projects in selected
metropolitan corridors to demonstrate the coordination of operations
among separate corridor networks, using proven and emerging ITS
technologies, to increase the effective use of the total corridor
capacity.
Implementing successful corridor management requires the
understanding of institutional, operational, and technical integration
issues. It also requires the collaborative and coordinated efforts of
multiple organizations in applying integrated operational strategies
and technologies. Figure 1 shows the
fundamental elements that need to be integrated for conducting corridor
management.

Figure 1 Fundamental
Elements of an Integrated Corridor Management
One of the chief obstacles to effective corridor management is the
current institutional strategies and policies that allocate
responsibility for corridor networks to different entities. In most
instances the networks that serve a corridor are currently operated by
separate jurisdictional entities. Typically, freeway networks are
operated by a state transportation agency and enforcement is carried
out by the state police. The arterial networks are operated by the
various jurisdictions along the length of the corridor. Transportation
management and enforcement duties at the arterial level are split
between different jurisdictional units. Transit service in a corridor
is typically provided by a regional authority, a jurisdictional-based
entity, or some combination.
Freeway management entities, arterial management entities, and
transit agencies in metropolitan areas have each implemented separate
technology-based management systems that support their individual
networks. Thus, each entity has its own management system that supports
the distribution of responsibilities and control of the system within
its network. In most cases, cross-network management of different
networks within a corridor is done manually. Although sometimes the
entities themselves may want to collaborate-such as is currently done
by Houston's TransStar, which co-locates the entities that control the
various transportation networks-existing systems are typically not
integrated such that the entities can distribute responsibilities and
share control. Current management systems do not prohibit corridor
management; however, the separate network-based systems do present
institutional coordination challenges that need to be addressed.
The ICM Initiative will study the integration of transportation
management systems in supporting the integrated operations of various
institutions in a corridor. Different alternatives for shared
operations management and the systems integration to support the
operations management will be analyzed and documented. Guidance
documents concerning the distribution of responsibilities and sharing
of control between management systems to institutionally support
integrated corridor operations will be developed and promulgated.
Operationally, there is a lack of specific knowledge concerning how
ITS technologies and operational strategies can be utilized to support
effective integrated corridor operations. Operational scenarios such as
signal timing coordination in conjunction with ramp metering using
National Transportation Communications for ITS Protocol (NTCIP)
standards-conformant equipment need to be investigated. Other
strategies that coordinate freeway, arterial, and transit operations
need to be studied to identify which ITS technologies and strategies
can be combined most effectively to improve corridor operations. Will
setting a freeway variable speed limit in conjunction with ramp
metering and signal timing on adjacent arterials assist in mitigating
the impact of a major corridor freeway incident? How will transit
signal priority affect a signal and ramp meter pair? Where and how
should coordinated managed lanes on freeways and arterials be
implemented? How widely should high occupancy toll (HOT) lanes be
implemented to achieve the most efficient use of corridor capacity?
The limited state-of-the-practice concerning coordinated operations
stems from a lack of detailed knowledge concerning operating
strategies, and a lack of analytical capability to choose the best
strategies for a particular corridor. The ITS technology and
operational strategy building blocks for corridor management do exist.
The results of coordinating these building blocks in a particular
corridor need to be demonstrated and documented.
Operational integration is the foundation upon which institutional
and technical integration must build. The ICM Initiative will identify
and develop operational strategies by which individual ITS technologies
such as ramp meters, advanced traffic control, variable speed limit
signs, and parking notification can be operationally integrated at a
corridor level. Analysis and evaluation tools will be developed to
support strategy development and selection. Guidance will be provided
to practitioners so that they can conduct a corridor resource and
component inventory and use this information to identify what
capabilities they have in a corridor and what capabilities are needed
to implement various corridor operational approaches. The analysis of
corridor operational strategies will include the study of ITS supply
and demand management practices and what can be done at the junctions
of corridor networks. Junctions, or interfaces, are the transfer points
between networks, such as a freeway ramp.
The third major obstacle to effective corridor capacity utilization
is a lack of knowledge and capability concerning the technical
integration of system operations at a corridor level. Arterial systems,
freeway systems, and transit systems have been deployed and are
integrated within their individual networks; however, cross-network
coordination along a corridor has not been a priority. A lack of
standards for sharing data and control has, until recently, been a
major obstacle to effective technical integration.
The ITS standards and strategies needed for effective technical
integration exist (or are in development and nearing completion), but
have not been widely deployed. These ITS standards and strategies are
key to effective operational and institutional integration. Without a
means to effectively share data and control, operations cannot be
integrated even if the institutional integration is robust.
In this area, the program will concentrate on the integration of
systems, data, communications, and control at a corridor level. For
example, ramp meters and adjacent traffic signals could be coordinated
to adjust ramp meters and signals to accommodate demand. The linking of
these systems will need to be location-specific and will require new
integrated operations processing techniques and new data and
communication interfaces. Generic system interfaces between corridor
management components will be developed to support and advance
implementation activities. Tools to assist in the identification and
analysis of systems integration requirements will also be developed.
This section describes the ICM initiative approach including the
following items:
- Overview - summarizing the ICM Phases, their
objectives, and other supporting activities
- Program Phases - detailing the specific
activities and deliverables in four phases
- Standards Completion and Deployment - describing
ITS standards activities for ICM
Integrated corridor management will increase mobility and safety in
major transportation corridors through institutional, operational, and
technical integration. It will result in reduced travel times, delays,
fuel consumption, emissions, and incidents, and increased reliability
and predictability of travel. This initiative will address
institutional, operational, and technical barriers to successful
corridor management.
The ICM Initiative will collaborate and coordinate with multiple
organizations and program areas within the U.S. DOT. A core team of DOT
representatives has been formed to provide program management,
technical guidance, and oversight throughout the program. The ICM core
team is comprised of:
- The ICM Initiative ITS JPO Coordinator;
- The Federal Highway Administration (FHWA) Technical Lead;
- The Federal Transit Administration (FTA) Technical Lead;
and
- Other partners from the FHWA and FTA.
There are four phases in the ICM initiative approach that delineate
the functional activities. The initiative also includes three go or
no-go decision points to achieve the intended program goals. The ICM
Initiative will identify, test, revise, and deploy appropriate
technologies and techniques within the context of a concept of
operations. A generic concept of operations will be developed in Phase
1 with input and feedback from a multimodal stakeholder working group.
The first phase is Foundational Research, which is ongoing.
The main objectives of this phase are to conduct foundation research to
assess the feasibility of integrated corridor management, and to
develop generic concept of operations and requirements that have the
support of the stakeholders. As a part of this effort, a multimodal
stakeholder working group was formed consisting of representatives from
public and private sectors. The purpose of the stakeholder working
group is to assist the ICM core team in understanding the
institutional, operational, and technical integration needs and issues
of integrated corridor management, and to provide input and feedback on
major deliverables and various aspects of corridor management
throughout the course of the initiative. The first U.S. DOT ITS
Management Council decision point for this initiative, "Development
Feasibility," is at the end of fiscal year 2005 corresponding to
nearing the completion of Phase 1. The decision point has passed, and
the U.S. DOT determined that the initiative should continue since there
are sufficient benefits to warrant ICM development and the apparent ICM
integration issues can be resolved.
The second phase is Corridor Tools, Strategies, and Integration.
In this phase, alternative shared operations management schemes and
cross-network operations strategies will be developed. Analytical tools
and methods will be developed to enable the implementation and
evaluation of integrated corridor management strategies. This phase
also includes laboratory and limited field testing and evaluation of
component integration interfaces and component operations of integrated
corridor management. The resultant development of this phase will
include the tools and components necessary to support ICM operations
and to apply in one or more ICM site demonstrations. Furthermore,
during Phase 2 the standards necessary to support the technical
integration of corridor management data, communications, and control
will be studied to determine if the standards need to be revised or
expanded.
The third phase consists of Corridor Sites Concept Development,
Site Operations Analysis and Evaluation, and Site Demonstrations.
In the Corridor Sites Concept Development, Stage 1 of Phase 3, several
Stage 1 Pioneer Sites will be selected for assessment of their
capability to demonstrate integrated corridor management. Each Stage 1
Pioneer Site will develop its own site-specific concept of operations
and requirements documents guided by the generic ICM concept of
operations and requirements developed in Phase1. In the Site Operations
Analysis and Evaluation stage, some of the Stage 1 Pioneer Sites will
be selected for analysis, modeling, and simulation (AMS) of ICM
operations-Stage 2 Pioneer AMS Sites. In the Site Demonstrations, Stage
3, one or more of the Stage 1 Pioneer Sites or Stage 2 Pioneer AMS
Sites will be selected as Stage 3 Pioneer Demonstration Sites to
conduct an ICM demonstration project. The ICM demonstration project(s)
will demonstrate the application of institutional, operational, and
technical integration approaches in the field, and document
implementation issues and operational benefits. The second decision
point in the ICM Initiative, "Site Applications Feasibility,"
will likely occur in fiscal year 2008 after the Corridor Sites Concept
Development stage and prior to the Site Operations Analysis and
Evaluation stage. The third decision point, "Site Demonstrations
Feasibility," will likely occur in fiscal year 2009 after the
Operations Analysis and Evaluation stage and prior to the Site
Demonstrations stage.
The fourth and final phase is Knowledge and Technology Transfer,
which consists of two parts. The first part, ICM Operations Concept
Knowledge and Technology Transfer, will take place prior to the Stage 1
Pioneer Sites operations analysis and evaluation, and site
demonstrations. It will be conducted to disseminate the knowledge
gained from Phase 1 and much of Phase 2. The second part, ICM
Implementation Knowledge and Technology Transfer, will take place
during and after the Stage 1 Pioneer Sites operations analysis and
evaluation, and site demonstration(s). These outreach activities will
be conducted to provide guidance and to transfer the tools and
technologies, developed in the site analyses, modeling and simulation
activities, and demonstration(s), needed to support successful
integrated corridor management strategies.
Figure 2 shows a high-level summary diagram
(called the "Roadmap") of the ICM program.

Figure 2 High-Level
Roadmap of the ICM Program
Some activities will occur throughout the length of the initiative.
These include the development and revision of the ICM Initiative
program plan, establishment and engagement of a multimodal stakeholder
working group, and the completion and deployment of applicable ITS
standards. A discussion of ITS standards activities is also included in
the applicable sections of the ICM program phases. Figure
3, located at the end of this document, shows the mid-level roadmap
of the initiative with the cross-cutting activities in the ICM program
described below.
Develop and Revise ICM Program Plan
An ICM Program Plan (this document) describing the four-phased
approach was developed and presented to the stakeholder working group
in the early stages of the initiative. Feedback was solicited from
stakeholders on the U.S DOT's program approach, and comments were
incorporated. The ICM Program Plan will be revised throughout the
initiative as necessary.
Establish and Engage a Multimodal
Stakeholder Working Group
The ICM Initiative core team has established a multimodal
stakeholder working group consisting of approximately 15-20 members.
The working group was formed to provide the perspective of public
sector operators and service providers, and to provide assistance to
the ICM core team in providing input on key ICM aspects and issues, and
in providing feedback on ICM program deliverables such as the ICM
Initiative program plan and generic concept of operations. The working
group will identify and assess key knowledge gaps and requirements, and
review the planning and execution of outreach efforts. Meetings and
workshops will be held to obtain input and direct participation in
determining the direction of the program and context of program
activities. Web-based collaboration will also be used to gather input.
Several meetings have taken place to date.
The ICM core team identified the stakeholder working group members
from various associations and agencies, balancing modal representation,
public and private sectors, and bringing in geographic representation.
Membership was solicited from the Transportation Research Board (TRB),
American Public Transportation Association (APTA), American Association
of State Highway Transportation Officials (AASHTO), Institute of
Transportation Engineers (ITE), ITS America, FTA's Bus Rapid Transit
Working Group, FHWA's Freeway Operations Working Group, Arterial
Operations Working Group, National Transit Institute (NTI), State DOTs,
metropolitan planning organizations (MPOs), 511 Policy Committee, and
representatives from the private sector, such as equipment vendors and
system integrators. In Phase 3, Stage 1 Pioneer Sites will be selected
and representatives of those sites will be invited to join the
stakeholder working group for the subsequent activities.
7.2. Program Phases
The major activities, products, and expected outcome of each of the
four program phases are discussed below.
Key goals of this phase, which is ongoing, are to conduct foundation
research to assess the feasibility of integrated corridor management
and to develop a generic concept of operations and requirements that
have the support of the stakeholders. The generic concept of operations
will be used to define specific needs that will be addressed by the
initiative. A contractor has been selected by the U.S. DOT to conduct
Phase 1 activities. Many of the Phase 1 activities are completed and
others are still underway. Please see Figure 4,
located at the end of this document, for a graphical illustration of
Phase 1. Specific activities under this phase include the following:
The purpose of this ongoing task is to assist the ICM core team in
building consensus among stakeholders on the goals, system components,
functions, requirements, and capabilities of integrated corridor
management. It will communicate overall stakeholder needs. Three
documents are being produced in this task: 1) a Generic Concept of
Operations, 2) ICM Requirements, and 3) ICM Implementation Guide. These
documents will be "living documents" that will be used throughout the
lifecycle of the ICM Initiative.
Generic ICM Concept of Operations
This activity involves the development of a Generic Concept of
Operations (ConOps) document for Integrated Corridor Management.
Information such as the ICM vision, samples of concepts of operations
documents, the ICM program plan, and definitions of corridors and
integrated corridor management are being used as a basis for its
development. The document is intended as a high-level concept of
operations for a generic corridor, answering the questions of who,
what, when, where, why, and how for the application of ICM within a
corridor. The document's primary purpose is to provide an example of an
ICM ConOps that can be used by network operators as the basis for
developing corridor-specific and real-world concept of operations. The
document is intended as guidance and not as a template. It will
identify important areas, features, and issues that must be addressed
in any site-specific concept of operations for integrated corridor
management.
The Generic ICM Concept of Operations document will be provided to
the Stage 1 Pioneer Sites, and shall be used as a starting point for
the Stage 1 Pioneer Sites to develop their own site-specific ICM
Concept of Operations documents. Note that the Generic ICM Concept of
Operations is intended to address a wide range of capabilities and
functions, and facilitate discussion of the relative importance of
different alternative capabilities and functions. It is intended to
facilitate stakeholder discussions about defining the corridor
management problem and prioritizing solutions. Not every stakeholder or
capability discussed in the generic concept of operations should
necessarily be included in a site-specific concept of operations.
Generic Corridor ICM Requirements
The purpose of this activity is to derive the applicable
requirements for integrated corridor management of the Generic
Corridor. The derivation of these requirements is being done in
coordination with the development of the Generic ICM Concept of
Operations. System-level components are being identified from the
Generic ICM Concept of Operations, and system interfaces are being
identified for data sharing and communication between system
components.
The ICM Requirements document is identifying the following items:
- Purpose and scope of the proposed system;
- Modes of operation;
- System capabilities, conditions, and constraints for
various modes of operation;
- System-level components and system interfaces;
- System performance measures (performance requirements);
and
- System interface requirements to facilitate integrated
operational strategies, including device-to-device integrated
operations.
The Generic Corridor ICM Requirements document will be
provided to the Stage 1 Pioneer Sites, and shall be used as a starting
point for the Stage 1 Pioneer Sites to develop their own site-specific
ICM Requirements documents.
ICM Implementation Guide
An ICM implementation guidance document is being developed to
identify and describe the steps for supporting the development and
implementation of integrated corridor management. The document is being
based upon the generic ICM Concept of Operations development process,
stakeholder input, and insights from implementers of current corridor
management systems.
The document is identifying ITS technologies, communications
infrastructure, activities, strategies, and potential issues associated
with planning and implementing ICM systems. The design of the ICM
project is based on the formal systems engineering process-an organized
means of guiding and documenting the design process-and reflects user
needs, issues, problems, and objectives listed in the generic ICM
concept of operations document.
This task involves overall foundational research to further the
understanding of various aspects of integrated corridor management. The
task is identifying various issues to evaluate the feasibility of the
ICM Initiative. Activities associated with this task are discussed
below.
Develop Alternative Definitions
Alternative definitions of corridors and integrated corridor
management were identified to support the selection and development of
agreed upon definitions. The definitions were presented to the
multimodal stakeholder working group for input and comment, and are
being refined as appropriate.
Develop a Process for Delineating a Corridor
The purpose of this activity is to develop a process for delineating
the boundaries of a corridor and identify the elements of the
process-including data collection, analysis, and modeling.
Relationship between Corridor Management and Regional Management
The purpose of this activity is to compare and contrast integrated
corridor management and regional management, identifying the
similarities, differences, and linkages between the two. This activity
is identifying the relationships between integrated corridor management
and regional management, and determining how the two may be
interrelated and may be operated together for optimal performance.
Identify ICM Institutional Strategies and Administration
This activity is identifying and analyzing the generic institutional
strategies for integrated corridor management, identifying the
corresponding participating institutions and stakeholders, and
addressing the administrative processes and requirements. The
institutional focus of this activity represents only one aspect of the
integration issues associated with integrated corridor management.
Operational and technical integration issues and needs are also
important considerations, and are being investigated in a separate
activity (under the task, "Identify Corridor Types, Operational
Approaches and Strategies, and Analysis Tools").
ICM Program Planning and Funding
In this activity, the administrative challenges associated with
planning and deploying an integrated corridor management system are
being identified. Also, alternative investment scenarios that will
facilitate concept deployment and contribute to improved operations are
being identified.
Successful and promising current corridor management efforts are
being identified to gather further information on needs and gaps,
lessons learned, and best practices in the state-of-the-practice.
Document Request for Information Responses
A request for information (RFI) was issued by the U.S. DOT in
February 2005 to identify local implementers of current corridor
management, and to identify the user needs; technical, operational, and
institutional limitations; lessons learned; and best practices. The
U.S. DOT received 18 responses to the RFI (Reference number
DTFH61-05-RFI-21605), which was open from February 16, 2005 to April
18, 2005.
The purpose of this activity is to summarize and document the RFI
responses in conjunction with the ICM Initiative. It includes a
synthesis of RFI results and an analysis of the corridor management
characteristics obtained from the RFI responses. It provides an early
glimpse into some of the barriers to deploying corridor management
systems. The documentation of RFI responses is assisting the U.S. DOT
in selecting sites for potential site visits.
Identification of Local Corridor Implementations for Site Visits
To gain additional information from the RFI responses, site visits
are being conducted at locations that are believed to provide insights
concerning the development and implementation of integrated corridor
management. This activity is identifying the most promising corridor
management implementations for site visits by the U.S. DOT and its
representatives. Site visit location recommendations are being
determined from the RFI responses and from additional sources of
information available to the U.S. DOT.
Site Visits and Report
Visits of recommended corridor management sites are being conducted
by the U.S. DOT and its representatives. A report is being prepared
that documents the site visits and describes the corridor management
improvements for each of the selected sites. The report includes the
RFI responses, the site selection process, the implementers involved, a
description of the integration efforts in the current systems, the
institutional, operational, and technical issues that were and were not
addressed, lessons learned, and the stakeholder needs.
The purpose of this task is to gain an understanding of how to begin
the process of determining what ICM approaches and strategies can be
applied to various corridors in relation to specific corridor
characteristics. In addition, the needs and gaps in ICM modeling and
analysis tools is being assessed.
Development of Corridor Types
This activity is identifying different corridor types that can be
used to classify corridors by several different characteristics and
attributes, and subsequently to match these corridors with potential
operational approaches and strategies for integrated corridor
management. A matrix, identifying corridor types and their attributes,
is being produced. The matrix will help facilitate comparisons with
real-world corridors, and assist practitioners in identifying the
appropriate strategies to incorporate into the respective ICM systems.
The three activities directly below are utilizing and expanding on the
corridor type attributes developed in this activity (as well as the ICM
Implementation Guide discussed above).
Development of Operational Approaches
This activity includes the following items:
- Identify operational approaches for ICM that can be
effectively used for a variety of different corridor types;
- Identify operational strategies (including supply and
demand oriented) that make up each approach; and
- Develop a matrix identifying the applicable ICM
approaches and strategies for the various corridor types developed in
the previous activity.
Corridor Type and Operational Approach Selection Procedure
The purpose of this activity is to develop an analysis approach or
procedure to combine ICM strategies, and to match them to corridor
types.
Identify Cross-Network Operational Strategies, Issues and Needs
In this activity, high-level requirements for the operational
strategies are being identified and defined, and institutional,
operational, and technical integration issues that need to be addressed
are being identified.
Identification of Analysis Needs
A literature review of current traffic simulation models is being
conducted to help identify which models have the potential for modeling
and analyzing ICM operations. A gap analysis is also being conducted to
identify the functional capabilities that these simulation models and
analysis tools do not provide with respect to ICM.
Corridor Types, Operational Approaches and Strategies, and
Analysis Tools Report
A final report documenting the corridor types, ICM operational
approaches and strategies, strategy selection procedure, strategy
requirements, technical integration issues and needs, and analysis
needs is being produced.
This activity includes the following items:
- Conduct a feasibility analysis;
- Develop a briefing that presents the preliminary results
of the ICM Initiative and that supports a go or no go decision; and
- Produce an ICM development feasibility report.
The report is summarizing the activities of Phase 1 and making a
recommendation on the feasibility of ICM development and the
continuation of the initiative. Whereas the general recommendation, as
approved by the U.S. DOT ITS Management Council, is for continuation of
the initiative, this activity is also serving to summarize the Phase 1
findings and to make recommendations for the remaining program
activities.
Feasibility Analysis
The objective of this activity is to conduct a feasibility analysis
(using information from previous Phase 1 activities and investigations
from this activity) that examines the costs and benefits of ICM,
current technology capabilities, and various integration issues.
Corridor evaluation reports identified from the literature are being
reviewed and summarized. In addition, high-level generic ICM
simulations are being conducted to develop a range of ICM benefit-cost
ratios. The salient points from the literature review are being
combined with the results from generic corridor simulations to assess
the benefits and costs for ICM, and the integration issues.
ICM Development Early Assessment Feasibility Briefing
Based on preliminary results from the ICM development feasibility
analysis, the contractor has developed a briefing for the ICM core team
to present to the U.S. DOT ITS Management Council. The briefing
provided the necessary information for the U.S. DOT ITS Management
Council to make a go or no go decision on whether or not to continue
the ICM Initiative (first decision point). The briefing discussed the
key institutional, operational, and technical integration issues that
need to be addressed, and whether these issues are workable within the
allocated program resources.
In October 2005, the feasibility results of the ICM Phase 1
Foundational Research were presented to the U.S. DOT ITS Management
Council. The Management Council concluded that U.S. transportation
agencies are interested in corridor management, that issues are
workable and solvable, and that the ICM Initiative should continue.
ICM Development Feasibility Report
An ICM development feasibility report that summarizes the results of
the feasibility analysis is being created. The report discusses the key
institutional, operational, and technical integration issues that need
to be addressed, and state whether these issues are workable within the
allocated program resources. The report is documenting the feasibility
analysis process, analysis assumptions, analysis results, concerns, and
ICM program recommendations, including specific Phase 2 developmental
activities.
To date, the stakeholder working group has identified issues and
needs related to corridor analysis tools, corridor strategies, and
corridor network integration. However, due to the level and diversity
of the group, very little detail has been obtained from it about the
content and specifics of Phase 2 activities. There is a need to develop
structured focus groups containing area specific experts that will
provide information and insight concerning the specific needs in each
area. The Phase 1 contractor is working with the U.S. DOT to form three
focus groups discussed below, to obtain information about technical
level issues and needs of the respective areas in relation to Phase 2
activities.
The Technical Systems Integration Focus Group
This focus group will help identify technical issues and system
level requirements for implementation of integrated transportation
(roadway and transit operations) operations. It is envisioned that the
group will consist of representatives from state and local
transportation agencies, and consultants, with demonstrated expertise
in ITS systems architecture, and knowledge of transportation management
center (traffic and transit) operations, ITS applications, and
strategies.
The Analysis, Modeling and Simulation Focus Group
This focus group will help identify and prioritize gaps in the
modeling and analysis capabilities of current tools to support corridor
analysis that includes the development and evaluation of cross-network
strategies and strategy packages. The tools will need to integrate
traffic and transit analysis capabilities to support true corridor
analysis capabilities. It is envisioned that the group will consist of
representatives with demonstrated expertise in the area of
transportation modeling that includes roadway vehicle, and bus and rail
transit.
The Transit Focus Group
This focus group will help identify the issues and requirements for
transit operations in the context of corridor management, identify
performance measures for transit operations in that context, and
identify and prioritize gaps in the modeling and analysis capabilities
of current tools to support evaluation of transit strategies for ICM.
It is envisioned that the group will consist of representatives with
demonstrated expertise in the area of transit operations and modeling.
Technical assistance will be provided to the selected Stage 1
Pioneer Sites in relation to clarifying the content and use of the ICM
generic concept of operations and requirements to assist the sites in
developing their site-specific concept of operations and requirements.
Technical assistance will be provided via telephone (including
conference calls and web conferences), emails, workshops, and, funding
permitting, site visits to the Stage 1 Pioneer Sites.
The purpose of this task is to gain a
better understanding of the transit perspective in integrated corridor
management and to understand the nuances related to integrating transit
networks and roadway networks for ICM. It will analyze differences
between transit and roadway operations and how these differences can be
equitably accommodated in corridors to facilitate implementation of ICM
systems. Specifically, this task will identify and examine transit's
goals, performance measures, and ITS technologies and strategies with
respect to ICM. It will identify and examine the transit component gaps
in current simulation and modeling tools and identify what transit
analysis components need to be incorporated into any corridor analysis
tools. The outcome of this effort will be a better understanding of
needs and issues of ICM from the transit perspective, the roles and
contributions of transit in ICM, and ways to bridge roadway and transit
perspectives to obtain a true corridor perspective.
Select Products: The key products of Phase 1 are:
- Generic ICM Concept of Operations
- ICM Requirements
- ICM Implementation Guide
- Foundation Research Technical Memorandums
- Documentation of Local Integration Efforts (RFI
Responses)
- Site Visits Report
- Corridor Types, Operational Approaches and
Strategies, and Analysis Tools Report
- Integrated Corridor Management Feasibility
Assessment Analysis Briefing
- ICM Development Feasibility Report
- Transit Issues, Contributions, and Perspectives in
ICM Technical Documents
Outcome: Decision Point #1 Deployment Feasibility - The
decision to continue the initiative was made in October, 2005, by the
U.S. DOT ITS Management Council based on the recommendations made in
the "Integrated Corridor Management Feasibility Assessment Analysis"
briefing.
The goal of this phase is to address the tools, strategies, and
integration practices that are both necessary to conduct effective ICM
Site demonstrations, and useful for dissemination to the entire
transportation community. This phase may include limited tests of
specific interfaces, tools, and operational strategies, based on the
recommendations made in the Phase 1 reports and Focus Group outcomes. Figure 5, located at the end of this document,
shows a graphical representation of Phase 2 activities. Phase 2 will
run concurrently with Phase 3, with some activities having a supporting
role, and others having an independent role.
The activities to be carried out under this phase are divided into
two tasks described in this section:
- ICM Tools and strategies
- Prototyping ICM System Components
Phase 2.1: ICM Tools and Strategies
The activities in this task will refine and utilize the ICM Tools
and Strategies. The outcome of this task will be to identify, enhance,
or develop the analysis, modeling, and simulation tools (hereafter
referred to as the AMS Tools) needed for Phase 3 and beyond.
Conduct the Analysis, Modeling, and Simulation of the Generic
Corridor
The purpose of this activity is to develop a framework to model,
simulate, and analyze the ICM strategies for a Generic Corridor, which
can then be applied to the Stage 2 Pioneer AMS Sites. The Phase 1
Generic ConOps and Requirements will be used for conducting the AMS
activities on the Generic Corridor. This effort will require the
development of a framework for the AMS activity. This framework will
first be utilized on the Generic Corridor, and then transferred to real
world corridors. This framework will consist of an experimental plan,
including identification of tools, approach, and performance measures
for ICM AMS. Also, a comparison will be made as to the appropriateness
of qualitative analysis versus quantitative analysis for each strategy.
Conducting the AMS activities on the Generic Corridor will serve to
determine and evaluate the applicable ICM strategies; as well as to
test enhancements made to existing tools. The outcome of this activity
should include a Generic Corridor AMS report detailing the AMS approach
and lessons learned, with items such as the limitations of tools with
respect to each of the ICM strategies.
Develop ICM AMS Tools
This activity will determine and prepare the AMS Tools based upon
the strategies and gap priorities determined by the AMS Focus Group in
Phase 1.6. The AMS Tools will likely be a combination of existing tools
and new, or existing, Application Program Interfaces (APIs) to achieve
the required results. These tools will allow practitioners to evaluate
alternative operational strategies and select the appropriate
strategies that meet their specific corridor needs. Some attention in
the AMS Tool selection should also be given to how to support the
determination and evaluation of corridor boundaries.
Possible options for modeling ICM include the following:
- Single scale microscopic models
- Single scale mesoscopic models
- Enhanced meso-scale models with supporting
micro-scale analysis (i.e., detailed microscopic traffic flow
relationships)
- Off-line multi-scale models (i.e., integrated
macroscopic, mesoscopic and microscopic models)
- Concurrent multi-scale or hybrid models (i.e.,
online version of integrated macroscopic, mesoscopic and microscopic
models)
The operational strategies and the AMS Tools developed or enhanced
under this initiative will be available for use throughout this program
and will be made available to practitioners.
Operations Decision Support Tools
The purpose of this activity is to plan and develop and ICM
Operations Decision Support Tool. This tool (or set of tools) would be
an extension of the AMS Tools used to support operations through the
planning or real-time selection of ICM strategies. The possibility and
efficacy of these decision support tools will be investigated under
this activity.
Refine the ICM Strategies
The purpose of this activity is to refine the operational strategies
for integrated corridor management. The list of corridor types and
related ICM approaches and strategies developed in the Phase 1.4
report, Corridor Types, Operational Approaches and Strategies, and
Analysis Tools, will be analyzed to identify their specific usage
within ICM.
The strategy analysis will determine the relative complexity and
predicted cost-benefit of each strategy, so as to establish priorities
for implementation. The focus will be to understand the relationships
of the operational strategies, the importance of the factors that
affect controlling the networks in a corridor as a system, and the
degree to which these influence travel demand, congestion, and trip
reliability. Furthermore, after the strategies are assessed using the
AMS Tools, additional refinements may be required. Upon finalizing the
ICM strategies, they will be compiled with the information from the AMS
Tools into an ICM Tools and Strategies Final Report.
Decision Point #2 - Site Application Feasibility
This activity will support the decision making process on moving to
the Stage 2 Pioneer AMS Sites (see Phase 3 - Stage 2). Near the end of
Phase 3 - Stage 1, the ICM core team will ask the U.S. DOT ITS
Management Council to make a decision based on the Integrated
Corridor Management Site Application Feasibility Report. At this
point it will be decided whether to continue with the ICM initiative
and which sites should be selected as Stage 2 Pioneer AMS Sites. The
continuation of the ICM initiative will be based upon the following:
- The capability of the tools to model the ICM strategies;
- The determination of sufficient benefit-cost from the
Generic Corridor AMS activity for the successful implementation of ICM;
and
- The ability to acquire viable data for performing the
AMS activities from one or more Stage 1 Pioneer Sites
Phase 2.2: Prototyping ICM System Components
The purpose of this activity is to develop the ICM System prototypes
and analyze their benefit to the Stage 1 Pioneer Sites and to ICM in
general. This prototyping activity involves the analysis, development,
and testing of the system interfaces and integration processes needed
to deploy ICM. The system interfaces and the integration processes
(i.e., institutional, operational, and technical) to be addressed will
be determined in the Phase 1.6 Focus Groups, and in conjunction with
analysis from the AMS Team in Phase 2.2.
To address these system interfaces and integration processes, this
activity will include both a planning component and an implementation
component. The planning component will require review of the
operational needs determined in various Phase 1 activities; and then, a
determination of the prototypes that will demonstrate successful
integration. The implementation component may include laboratory and
limited field testing and evaluation of component interfaces of
integrated corridor management. This activity may include a range of
prototype work-from the analysis of appropriate interface standards, to
proof-of-concept test deployments of integrated systems and services.
These proof-of-concept test deployments would occur on a smaller scale
than that envisioned for a fully integrated corridor management system.
The following activities represent some of the ICM system components
that may be investigated and identified for deployment and testing.
Create ICM Interfaces and Integration Processes
System interfaces may be created to integrate the operations of
system components of corridor management systems. This would include
selecting appropriate standards for enabling data sharing. Processes
would then be developed for data sharing and communication between
system components and to allow device-to-device control. For example,
communication and control interfaces and processes may be developed to
enable the integrated operations of a ramp meter and an adjacent
traffic signal.
Develop Operations Management Schemes
Operations management schemes could be developed that facilitate the
sharing of control and responsibilities between participating corridor
organizations for each corridor type. For example, the deployment may
include a corridor management system integrating ramp meters and
adaptive signal control on adjacent arterials. Alternative approaches
could be developed that define junctions between the responsible
agencies to allow the sharing of control; thus, different alternatives
for management schemes that satisfy operational performance goals could
be identified for each corridor type and analyzed.
Standards Selection and Test
Appropriate standards will be identified and will be tested to
assess the capabilities of enabling data sharing and communication
between ICM system components. These tests would assess the
completeness and correctness of the selected standards to support the
needs of ICM. This activity might include prototyping the application
of Center-to-Center (C2C) standards to support cross-network
integration.
Conduct Laboratory Tests of Component Interfaces and Operations
Tests may be conducted to integrate operations of system components
of a corridor management system on a limited scale in a laboratory
environment. Where applicable, ITS standards will be selected and
applied.
An example test that might be conducted includes developing an
operations management decision support system for ICM. This system
could be used to study the incorporation of real-time on-line analysis
of Dynamic Traffic Assignment (DTA), or the incorporation of
performance measure threshold triggers for various cross-network
operations strategies that support ICM.
Conduct Field Tests of Component Interfaces and Operations
The purpose of this activity is to identify any limitations or
issues with the integrated operations of system components in
proof-of-concept tests prior to a fully integrated deployment in the
field. Criteria for selection may include:
- The ease and speed with which these tests can be
executed;
- The stakeholder needs identified in the ConOps document
in Phase 1.1; and
- The findings from the Focus Groups that will be
conducted in Phase 1.6.
Field tests may be conducted to test the integrated operations of
system components of a corridor management system on a limited scale.
Some of these system components may already be operational in the
field. The field tests would demonstrate if integrating the operations
of these system components is feasible and effective. ITS standards may
be selected for the field tests and applied.
The laboratory and field tests would demonstrate the effectiveness
of ITS technologies, standards, and strategies that may be included in
future site demonstration efforts. The ITS standards selected and used
for the tests may be revised at the end of this activity. At the
completion of this activity, the following documentation will be
prepared: the laboratory implementation procedures, the field test
results, the limitations and problems identified while conducting the
tests, and the limitations and modifications of the applicable ITS
standards.
An example field test might involve deploying traffic signal control
strategies and technologies, such as transit signal priority. These
strategies may be developed and tested under this initiative based on
the needs assessment previously conducted by the FTA and the ITS JPO.
ICM System Prototyping Final Report
Near the completion of the ICM System Component Prototyping
activity, an ICM System Prototyping Final Report will be
produced that presents the results of these development and testing
activities. Furthermore, the Strategies, Concept of Operations, and
Requirements documents for the Generic Corridor should be revised as
necessary based on the findings from the tests.
Select Products: The key products of Phase 2 will include:
- Generic Corridor Modeling Report
- AMS Tools
- ICM Tools and Strategies Final Report
- ICM Site Application Feasibility Report
- ICM System Prototyping Final Report
Outcome: Upon successful completion of the AMS and
prototyping activities a comprehensive synthesis of ICM Strategies,
Tools, and Integration Practices will exist, which can be used as the
basis for delivering ICM to the entire transportation community.
The goal of this phase is to conduct effective ICM Site
demonstrations. This phase may include the deployment of specific
interfaces, tools, and operational strategies, recommended in the Phase
1 and developed in Phase 2. Figure 6, located
at the end of this document, shows a graphical representation of Phase
3 activities. Phase 3 will run concurrently with Phase 2-with some
overlapping activities. Specific activities to be carried out under
this phase fall within the three stages described in this section.
In this Stage, the Stage 1 Pioneer Sites will prepare their
corridor-specific Concept of Operations and Requirements documents.
These documents will follow the guidance provided in the Generic ICM
Concept of Operations and Requirements documents prepared in Phase 1.1.
The U.S. DOT will also provide an Implementation Guide that discusses
how to conduct integrated corridor management. In this stage the Stage
1 Pioneer Sites will accomplish the following tasks.
Kickoff Meeting and Initial Workshop
This first workshop and kickoff meeting will provide the opportunity
for the Stage 1 Pioneer Sites to meet with one another and with the
U.S. DOT ICM Team to discuss the U.S. DOT's vision of integrated
corridor management. The workshop will also serve to open dialogue with
the U.S. DOT on the work to be done during the period of performance of
this effort. This workshop will serve as the formal "kick-off" meeting
for the Stage 1 Pioneer Sites.
Develop an Integrated Corridor Management Concept of Operations
The Stage 1 Pioneer Sites will develop a Concept of Operations
document, using the generic Concept of Operations document provided by
the U.S. DOT as the starting point. Each Stage 1 Pioneer Site will
tailor this document for the specific capabilities and operational
needs that the Stage 1 Pioneer Site believes should be in the Stage 1
Pioneer Site's Corridor. Each Stage 1 Pioneer Site's Concept of
Operations will describe what the Stage 1 Pioneer Site believes are the
integrated corridor management capabilities needed to address existing
problems and issues in the Stage 1 Pioneer Site's Corridor. The U.S.
DOT will assist the Stage 1 Pioneer Sites in the development of a
site-specific Concept of Operations. The first version of this document
will be prepared prior to the second workshop and stakeholder meeting
scheduled as the next part of this Stage.
Concept of Operations Workshop
This second workshop will give each Stage 1 Pioneer Site the
opportunity to present its thinking, as embodied in the draft Concept
of Operations for their site, on how they would approach the
implementation of integrated corridor management. It will provide each
Stage 1 Pioneer Site with the opportunity to measure its own approach
against the approaches of other Stage 1 Pioneer Sites. After the
workshop, the U.S. DOT will provide comments on the Stage 1 Pioneer
Site's draft Concept of Operations. Each Stage 1 Pioneer Site will then
revise and refine its Concept of Operations incorporating comments from
the U.S. DOT, and the best practices of other Stage 1 Pioneer Sites, in
their final version to the U.S.DOT.
Document Requirements for Integrated Corridor Management
Each Stage 1 Pioneer Site will develop and document the requirements
that expand on the needs identified in the Stage 1 Pioneer Site's
Concept of Operations document. The requirements documentation will
provide the basis for the capabilities that the Stage 1 Pioneer Site
plans to implement, should it be selected as an ICM Stage 3 Pioneer
Demonstration Site. The U.S. DOT will provide technical assistance to
the Stage 1 Pioneer Sites in the documentation of requirements for
their proposed ICM system. The types of requirements that will be
documented include: functional requirements, performance requirements,
and system requirements. The first version of this documentation will
be prepared prior to the third workshop and stakeholder meeting
scheduled as the next part of this Stage.
Requirements Workshop
This workshop will give each Stage 1 Pioneer Site the opportunity to
present its thinking, as embodied in the draft requirements
documentation for its Site, on what specific integrated corridor
management capabilities will be implemented. The workshop will provide
each Stage 1 Pioneer Site with the opportunity to measure its own
approach against the approaches of other Stage 1 Pioneer Sites. After
the workshop, the U.S. DOT will provide comments on the Stage 1 Pioneer
Site's draft requirements documentation. Each Stage 1 Pioneer Site will
then revise and refine its requirements documentation incorporating
comments from the U.S. DOT, and the best practices of other Stage 1
Pioneer Sites, in their final version to the U.S.DOT.
Develop ICM Sample Data List
This Phase 3 - Stage 1 activity involves determining the data
required to model ICM and, by extension, examine the performance of
ICM. The AMS Team will develop the definitive sample data list and
provide this list to the Stage 1 Pioneer Sites. This ICM AMS "Definitive
Sample Data List" will act as the guide for the Sites to develop
their own "Initial Network Data" used to select the Pioneer
Sites to become Phase 3 - Stage 2 Pioneer AMS Sites.
The development of the ICM AMS definitive sample data list involves
the following steps. First, the operational performance goals will be
identified for each corridor type identified in Phase 1.4. Next, common
corridor performance measures will be compiled for each strategy. That
is, for each strategy the specific performance measures will be
identified to determine the data required for the ICM analysis,
modeling, and simulation. Then the data availability, accuracy, and
reliability thresholds for ICM operations will be determined based upon
the Generic Corridor Requirements. This will provide the data
collection needs for implementing ICM strategies. Lastly, the "Definitive
Sample Data List" will be derived that will support the
requirements for analyzing, modeling, and simulating the ICM corridor.
Collect and Deliver Sample Data
The purpose of this activity is for the Stage 1 Pioneer Sites to
deliver the sample ICM-type data to the U.S. DOT. The U.S. DOT plans to
select multiple Stage 1 Pioneer Sites as Stage 2 Pioneer AMS Sites. The
U.S. DOT will choose the Stage 2 Pioneer AMS Sites based upon both the
quality of their written documents (Concept of Operations and
Requirements documents) and the availability of the data needed to
perform the required assessment of their proposed system.
The U.S. DOT will provide all Stage 1 Pioneer Sites with a
definitive list of the data required. The Stage 1 Pioneer Sites will
collect and provide the available data for the U.S. DOT assessment, as
part of the process of selecting those sites that will become Stage 2
Pioneer AMS Sites.
In this stage a number of Stage 1 Pioneer Sites will be selected by
the U.S. DOT to perform work as Stage 2 Pioneer AMS Sites-that is,
support the Analysis, Modeling, and Simulation of their corridors. The
U.S. DOT's designated AMS Team will perform the analysis, modeling, and
simulation assessment of the Stage 2 Pioneer AMS Sites' proposed ICM
systems. During Phase 3 - Stage 2, each Stage 2 Pioneer AMS Site will
work closely with U.S. DOT's AMS Team. The primary role for the Stage 2
Pioneer AMS Site team in this Stage is to collect the data that the
U.S. DOT's AMS Team requires in its efforts. Furthermore, each Stage 2
Pioneer AMS Site will participate in the analysis, modeling, and
simulation effort as a resource to the U.S. DOT's AMS Team.
Conduct the Analysis, Modeling, and Simulation of the Stage 2
Pioneer AMS Sites
Under this activity the selected Stage 2 Pioneer AMS Sites will be
modeled to analyze their proposed ICM corridor strategies. This
modeling will be conducted in conjunction with the Stage 2 Pioneer AMS
Sites according to the framework determined previously when conducting
the Analysis, Modeling, and Simulation of the Generic Corridor
(completed in Phase 2). The strategies to be modeled will be determined
from the site-specific ConOps and Requirements. The experimental plan
framework (developed in Phase 2) will identify the appropriate tools,
approach, and performance measures for these strategies.
As the AMS work is being conducted the proposed strategies for each
Stage 2 Pioneer AMS Site will be identified for operations analysis and
evaluation. The AMS Team will work with each Stage 2 Pioneer AMS Site
to identify ICM strategies and performance measures to be assessed.
Once the strategies are established for each site, the data
requirements for modeling the proposed system can be identified.
The initial activity will yield the "Modeling and Analysis Data"
that will then be used to select the appropriate modeling and analysis
tools for each Stage 2 Pioneer AMS Site.
Once the tools are determined, the proposed systems for each site
can be modeled and evaluated. This will produce the AMS results, which
will be used to determine the range of expected benefits of each
proposed system.
Upon completion of the modeling a draft Stage 2 Pioneer AMS Site
Assessment Report will be developed, detailing the approach,
results, and lessons learned. This report will detail the possible
benefits of implementing the proposed ICM System.
Site-Specific Demonstration Plans
During Stage Two, the U.S. DOT may select some or all of the Stage 1
Pioneer Sites (including Stage 2 Pioneer AMS Sites) to prepare and
submit Demonstration Plans. These Demonstration Plans will describe how
the Site proposes to implement those elements of its conceptual ICM
system that it believes can effectively demonstrate integrated corridor
management. The proposed demonstration project may encompass all of, or
part of, the Site's complete conceptual ICM system. Stage 1 Pioneer
Sites that are not selected as Stage 3 Pioneer Demonstration Sites may
be invited to continue as ICM Stakeholders.
Decision Point #3 - Site Demonstration Feasibility
This activity will support the decision making process on moving to
Stage 3 of the ICM Stage 1 Pioneer Sites-the ICM Stage 3 Pioneer
Demonstration Sites. At this point it will be decided whether to
continue with the ICM initiative and which sites should conduct ICM
Demonstrations. This decision to proceed will be based upon the quality
of the Concept of Operations, the possible benefits to the
corridor, and the feasibility of the sites to successfully demonstrate
the potential of ICM.
The decision will be supported through the development of the "Integrated
Corridor Management Site Demonstration Feasibility" Report. The
report will document whether sufficient knowledge and technological
capabilities have been developed or identified to support an effective
demonstration. The report will include an inventory of the products
developed or modified in Phase 2, including the operations management
schemes, cross-network operational strategies, analysis and modeling
tools, and ITS standards needed to have a successful integration of
corridor management systems. It will also document the lessons learned
from the AMS tests.
At the end of Stage 2, the ICM core team will present to the U.S.
DOT ITS Management Council their recommendation concerning whether or
not it is feasible to continue on to the Site Demonstrations in Stage
3. Multiple Stage 1 Pioneer Sites or Stage 2 Pioneer AMS Sites may be
selected to proceed to Stage 3 to conduct ICM Demonstrations on their
corridors.
This Stage consists of the development and implementation of those
demonstration projects selected by the U.S. DOT. The specific work to
be performed depends on the details of the approved Demonstration Plans
of selected Stage 3 Pioneer Demonstration Sites. In addition, the U.S.
DOT will assess the quality of the systems engineering capability of
each Stage 1 Pioneer Site in determining which sites shall become Stage
3 Pioneer Demonstration Sites.
Stage 3 Pioneer Demonstration Sites
While each demonstration project may have its own timeline and
duration, it is anticipated that this Stage will last about three years
in total. The selected Stage 3 Pioneer Demonstration Sites will be
required to work in conjunction with the U.S. DOT's AMS Team and an
independent ICM Evaluation Team. After the ICM Demonstrations, the
modeling tools developed by the AMS Team and the lessons learned
through the evaluations will be compiled in the Phase 4 technology
transfer effort to disseminate the tools and benefits of ICM to the
entire transportation community.
ICM Stage 3 Pioneer Demonstration Site Assessment and Evaluation
In this activity work will be conducted in conjunction with the AMS
Team and the ICM Stage 3 Pioneer Demonstration Site Independent
Evaluator to facilitate conducting the "before and after" study
assessment and evaluation. Upon collecting the final information, the "ICM
Stage 3 Pioneer Demonstration Site Assessment and Evaluation Final
Report" will be compiled detailing the approach, lessons learned,
and "before and after" study results for each ICM Stage 3 Pioneer
Demonstration Site.
Select Products: The key products of Phase 3 will include:
- Draft and Final Concept of Operations for the ICM
Stage 1 Pioneer Sites
- Draft and Final Requirements Documents for the ICM
Stage 1 Pioneer Sites
- Definitive Sample Data List
- Initial Network Data from the ICM Stage 1 Pioneer
Sites
- Data from the ICM Stage 2 Pioneer AMS Sites
- ICM Stage 2 Pioneer AMS Site Assessment Report
- Site-Specific Demonstration Plans
- ICM Site Demonstration Feasibility Report
- Data from the ICM Stage 3 Pioneer Demonstration Sites
- Independent Evaluations of the ICM Stage 3 Pioneer
Demonstration Sites
- ICM Stage 3 Pioneer Demonstration Site Assessment
and Evaluation Final Report
Outcome: The completion of this phase will have demonstrated
the successful deployment of Integrated Corridor Management Systems
(ICMS). The demonstrations will provide:
- A list of successful ICM strategies that can be
transferred to other communities
- An evaluation of the benefits/costs of the
designated ICM strategies
- A measure of how ICM can increase mobility and
reduce congestion
In this phase, knowledge and technology transfer activities will be
conducted to provide guidance and tools needed for widespread effective
deployment of integrated corridor management systems. Specific
activities to be carried out under this phase include (graphically
represented in Figure 7, located at the end of
this document):
Under this activity an ICM Resource Compendium will be prepared to
provide stakeholders with information about important results, reports,
and guidance from all previous phases of the initiative. The ICM
Resource Compendium will identify and provide guidance about such items
as the Generic ICM ConOps, Generic ICM Requirements, ICM Implementation
Guide, ICM Technical Memos, and the ICM Program Plan. This compendium
will be updated over the life of the ICM Initiative to maintain a
knowledge base on the resources being produced by the initiative..
In this task outreach materials will be developed to provide
guidance on implementing integrated corridor management systems.
Outreach materials will include brochures, a guidance document,
training courses, and workshop materials, among other potential items.
Develop Technology Transfer Materials for ICM Institutional
Integration Approaches
Based on the knowledge gained from Phases 1 to 3, a training module
will be developed on institutional integration issues and approaches
needed to integrate management systems across corridor networks.
Develop Technology Transfer Materials for ICM Operational
Integration Approaches
A training module will be developed on operational integration
issues, and cross-network operational approaches and strategies.
Develop Technology Transfer Materials for ICM Technical
Integration Approaches
A technical integration training module will be developed that will
identify technical integration issues, the modeling and analysis tools
needed to assess the impacts of corridor management systems, the
applicable ITS standards, combinations of ITS technologies, devices,
and strategies that are compatible and feasible, versus combinations of
ITS technologies, devices, and strategies that may not be compatible or
feasible.
ICM Training Courses
The three training modules will be used in various combinations to
develop training courses targeting various audiences including,
decision makers, planners and operations personnel.
Develop Integrated Corridor Management Implementation Guidance
Document
Specific guidance on implementing corridor management systems will
be developed. The document will address the institutional, operational,
and technological gaps in the integration of corridor management
operations. The document will provide guidance on how to select
relevant management schemes, operational approaches, operational
strategies, ITS standards, and analysis tools for integrating corridor
management systems.
In this task outreach will be conducted to provide guidance and the
necessary tools and strategies to the transportation community for
integrating corridor management operations. The outreach will include
knowledge and technology to support the implementation of corridor
integration through integrated management systems, integrated
operational strategies, cross-network analysis capabilities,
cross-network systems integration, application of ITS standards, and
training.
Integrated Corridor Management Conference
A post-demonstration and evaluation conference will be held to share
the ICM demonstration experience, including the approach, the lessons
learned, and the results of the deployment effort and the evaluation
process. Brochures and other outreach materials promoting integrated
corridor management will be distributed.
Technology Transfer of ICM Institutional, Operational, and
Technical Integration Approaches and Analysis Tools
The various institutional strategies identified or developed for
integrating cross-network operations in a corridor, the operational
approaches and strategies necessary for integrated operations of a
corridor, the modeling and analysis tools developed or modified under
this initiative to analyze the operational strategies, and the ITS
standards revised under this initiative will be freely disseminated.
Technology transfer will take place through training courses,
peer-to-peer training, seminars, mobile workshops, brochures, guidance
document, and the ICM Web pages. Technology transfer materials
developed in Section 4.2 may be tailored to address the needs of an
agency interested in integrating corridor operations.
Select Products: The key products of Phase 4 will include:
- Integrated Corridor Management Systems Resource Guide
- Integrated Corridor Management Systems
Implementation Guidance Document
- Institutional Integration Training Module
- Operational Integration Training Module
- Technical Integration Training Module
- ICM Training Courses
- ICM Conference
Outcome: This phase will result in an increased awareness
among decision makers, system operators, and practitioners, of the
benefits and issues of deploying an integrated corridor management
system. It will provide practitioners with the knowledge, guidance,
standards and analysis tools necessary to integrate corridor management
systems successfully.
The completion and deployment of applicable ITS standards for ICM
will occur through the coordination of the objectives and vision of the
ICM and ITS Standards Programs. The Tier One ICM and ITS Standards
Initiatives share a number of objectives that are achieved through the
deployment of ITS standards:
Objective: Effective Data and
Information Sharing between ITS Devices along Corridor.
- ITS standards allow for ITS devices to operate on a
common communications platform and share a common communication
interface, simplifying the transfer of data from point-to-point (from
device-to-device).
Objective: Simplified Management of the
ITS network along Corridor.
- Standards support interoperability among different types
of ITS devices, allowing agencies to tie together an array of devices
into a single, robust ITS network.
- Standards support interchangeability, making it easier
to maintain, upgrade, and expand the ITS network. The ability to swap
devices minimizes downtime and maximizes the deployment of the network.
New technologies that are conformant to open standards can be more
easily integrated into the existing network.
- Communication interface requirements become
well-understood and easier to maintain; systems integration becomes
easier.
Objective: Effective and Simplified
Coordination of Transportation Demand Management Activities through
Linked Centers along Corridor.
- ITS standards support interoperability among ITS devices
in a non-proprietary manner and enable centers along the corridor-even
if operated by different agencies or different jurisdictions-to more
easily exchange transportation data.
- Standards facilitate the integration of non-traditional
centers to be integrated into the ITS network, expanding the range of
services that can be coordinated through a single center.
Meeting these programmatic objectives is the foundation for
achieving a vision of how the transportation network can and will
operate along a corridor to maximize capacity and minimize disruptions
to the transportation flow. The vision includes:
Vision: Information Sharing.
- Information sharing capabilities are reinforced through
shared databases and communications systems, which build on the
National ITS Architecture, and enable the sharing of remote devices,
such as closed circuit television (CCTV) cameras or dynamic message
signs, traffic signalization timing plans, and traffic monitoring
systems.
Vision: Operations Sharing.
- Evidence of more effective integration of transportation
facilities along a corridor to enable choices through unified
operations centers, integrated databases and shared datasets,
integration of wireless technologies, extensive use of internet-based
technologies, multi-organization cooperation, and increased and
seamless choice of transportation options for the traveler.
The use of ITS Standards allows for this vision to be achieved
through open source, open architecture solutions that support
interoperability, interchangeability, and more cost-effective
integration without the need to patch systems with every change.
The ICM initiative will have shown through a successful
demonstration effort how mobility and safety can be increased in major
transportation corridors by:
- successfully integrating ITS technologies efficiently
and proactively,
- improving use of real-time data sharing across all
networks within the corridor, and
- optimizing the corridor as a system instead of a
collection of individual networks.
The ICM initiative will have demonstrated the effective use of
existing capacity within a corridor, leading to reduced congestion and
more reliable travel times. The initiative will also promote the
widespread use of integrated corridor management tools and strategies.