Track 3 – Infrastructure Enabling Technologies (1)
—Signal Phase and Timing (SPaT) interface definition
—Contract awarded to Battelle - January 2011
—SME workshop - Spring 2011
—Con Ops completed - Summer 2011
—Opportunity for broader industry input at this time
—First prototypes ready for unit testing in Jan 2012 (to be tested with 2 controllers and up to 4 different RSE)
—Initial SPaT Interface Definition available for use in Safety Pilot - 1Q 2012
Track 3 includes all the technical work required to enable safety applications that use SPaT.  It also includes other activities such as mapping, positioning, and communication requirements to enable multiple systems or components to exchange useful data and information across jurisdictional boundaries using an open interface.

The first prototypes will be for NEMA type controllers from two different manufacturers: Siemens and Econolite and will later expand to include other types and manufacturers.  The expectation is that this will facilitate the development of retrofits rather than requiring installation of new controllers.

<Prototypes will provide an expanded J2735  message set to the vehicles that will include new information on the geometrics of the intersection and within lane accuracy of the vehicles.  Enhanced control can also detect if a specific vehicle type is in the dilemma zone and if the green needs to be extended.  We are testing the message set so we can develop safety and mobility applications around it.>

Unit testing at TFHRC will cover the two different controllers and up to 4 different RSE’s that are being developed for Safety Pilot.