Report on model Verification for the Enhancement of Driving Support Utilizing Traffic Signal Information (SIP NPA 1)

Abstract

The effectiveness of introducing ITS wireless roadside units (the complement rate with infrared beacons and improvement in the percentage of drivers who decelerate in reaction to information from the beacons) was evaluated using a model route (a route equipped with ITS wireless roadside units and infrared beacons) installed in Aichi Prefecture.

The results of the evaluation concluded that an optimal combination of introducing infrared beacons and ITS wireless roadside units will have a positive effect on intersections, particularly important intersections whose traffic signal cycle lengths and other parameters change in real time.

In the future, the accuracy of signal information required for controlling automated vehicles will be examined. Cost reductions for roadside units must also be considered.