CY 2010
1Q
2Q
3Q
4Q
CY 2011
1Q
2Q
3Q
4Q
CY 2012
1Q
2Q
3Q
4Q
CY 2013
1Q
2Q
3Q
4Q
CY 2014
1Q
2Q
3Q
4Q
SPaT Prototype
RG&I Trade Study
Positioning Prototype
Test and Evaluation
Final SPAT Interface Definition & Policy Guidance
SPaT I/F Definition
Mapping Prototype
V2I Security Reqs
CY 2009
1Q
2Q
4Q
3Q
Application Cert Reqs
SPaT I/F Review

Definition of SPaT Interface and Policy Guidance:
•Develop SPaT Prototype
o    Stakeholder Engagement Opportunity – Review initial concept for SPaT Interface
o    Initial definition of SPaT Interface
•Test and Evaluation of SPaT Prototype
o    Final SPaT Interface Definition & Policy Guidance
V2I for Safety Roadmap – Draft
Track 3
Infrastructure Communications & Interoperability
Integrated V2I Infrastructure
System
Comms Reqs
Comms TS
The Definition of Signal Phase and Timing (SPaT) Interface and Policy Guidance will involved development, test & evaluation, and refinement of a SPaT Prototype.

•Development of a SPaT Prototype will be based on an open interface definition between signal controllers and mobile devices. It will use existing standards, NTCIP 1202 for the controller equipment and J2735 for the mobile devices, to define the objects and message sets that will pass the information between the devices.  The information will include the signal state for each phase and the time remaining in the phase.

oThe output from this project is the Interface definition and a working prototype using two manufacturers’ signal controllers.

•Test and Evaluation of the SPaT Prototype will refine the interface developed under the SPaT prototype work.  This work will also facilitate the modification of controller software and firmware modifications for the remaining signal control equipment vendors.

oThis project will provide the Final SPaT Interface Definition, which will lead to determining Policy Guidance in the 4th quarter of 2013.