V2I Use Case Report

Flinders and SAGE have commenced implementing a V2I solution at the intersection of Alawoona Ave and MAB Circuit. FLEX will have the opportunity to traverse the intersection without the need to come to a complete stop by using V2I technology. The problem is that FLEX currently is required to come to a complete stop at this intersection even when the traffic signals provide a green right turn arrow. This is counter intuitive for other road users and has the potential to cause safety issues. By providing the functionality to traverse the intersection by following the traffic signals will make FLEX operations intuitive for all road users and hence safer as well as providing a shorter run time.
SAGE have developed a roadside unit V2I communication system, see Figure 3 below, that obtains traffic signal phase data from the Traffic signal controller, then sends that information as standard V2I SPAT messages to FLEX. These messages indicate the current phase the traffic signals are in and hence if a right turn green arrow is present, FLEX will make the right hand turn without the need to come to a complete stop. The communications between the traffic signal controller, the Roadside Unit (RSU) and FLEX have been verified by SAGE and Navya on a test bench.