1	Applying Systems Engineering to Implementation of Adaptive Signal Control Technology Jeffrey A. Lindley Associate Administrator for Operations USDOT, Federal Highway Administration (FHWA) jeffrey.lindley@dot.gov ITS World Congress October 25, 2012
2	Outline ASCT Benefits ASCT Deployment Penetration Barriers to ASCT Adoption Overcoming Barriers by Managing Risks The Role of Systems Engineering Your Questions
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4	ASCT Benefits Better Benefits to both road users & public agencies Travel time reduction 13% - 50% Fuel Consumption 8% - 38% Ongoing performance measurement Smarter Solves problems that are difficult to address with time-of-day and traffic responsive timing Saves cost of mundane data collection and retiming Faster Reduces retiming intervals from years to minutes
5	US Implementation 1992-2009
6	Lessons from ASCT Demonstrations Substantial benefits over coordinated TOD operation Travel time, Delay, Emissions, Congestion, Safety Most effective where demand conditions are variable and unpredictable Most effective on linear arterials, limited success within tight grids Most effective in under-saturated conditions
7	Identified Barriers to ASCT Adoption Complexity Cost Uncertainty about Benefits
8	Every Day Counts – Better, Faster, Smarter
9	Successful Technology Deployment Goals well understood Agency describes its needs Positive response to requirements in RFP Requirements are verified Performance objectives are validated System is effective over entire life cycle
10	What are the Risks - ASCT? Problem could be solved with other strategies Functional objectives of the system may not align with agency objectives Loss of other critical functions / features Constraints not properly addressed Cost Maintenance
11	Other ASCT Risk Issues Technology NEW to most Technology still evolving Most systems have very limited track record Documented history of failed ASCT projects (40%+) Significantly increased complexity Extremely dependent on infrastructure Communications systems Detection Staff Not “one size fits all” Marketing exceeds performance in many cases
12	The Role of Systems Engineering
13	Purpose of SE Model Documents Evaluate need for Adaptive Control Help agencies identify verifiable, needs-driven requirements for evaluating design and implementation choices Model documents greatly reduce systems engineering effort by providing wording and documentation… …but agencies still must identify their needs
14	Model Document Process
15	FHWA Every Day Counts Outreach/Support/Technical Assistance
16	US Implementation 2010 - 2012
17	FHWA EDC/ASCT Influence 2010-2012
18	Summary ASCT investments can produce significant benefits Barriers to more widespread adoption still exist Barriers can be overcome by focusing on managing risks and using systems engineering process Use of systems engineering process has helped spur a dramatic increase in ASCT deployments in the United States
19	Questions?