A Signal Phasing and Timing (SPaT) deployment in Georgia provided insight into connected vehicle technologies.
The Georgia DOT (GDOT) highlighted lessons learned from experience with SPaT deployments (2019-2020).
Date Posted

Lessons Learned from Comprehensive SPaT Deployment and Future Plans

Summary Information

The American Association of State Highway and Transportation Officials (AASHTO) SPaT was created to challenge state and local public sector transportation Infrastructure Owners and Operators (IOOs) to deploy DSRC infrastructure with SPaT (and MAP) broadcasts in at least one corridor or network (approximately 20 signalized intersections) in each state by January 2020.

As of January 2020, GDOT had 410 Roadside Units (RSUs) in operation with connectivity on every major arterial in metro Atlanta.

Lessons Learned

GDOT highlighted the following lessons learned for agencies considering deployment of connected vehicle applications:

  • Focus on infrastructure improvements for connected vehicle applications that also provide benefits beyond just connected vehicles.
  • Be aware that there is a lot of misunderstanding and wrong information about connected vehicles.
  • Support collaboration between agencies and early adopters.
Goal Areas

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