対向右折車への優先行動が交通流へ及ぼす影響

抄録

This study proposes an idea that encourages driver's motivation to drive altruistically. We focus on an existing intersection that disturbs the throughput of upstream vehicles by right-turn vehicles waiting a gap acceptance to turn right. We investigated some scenarios that oncoming thru traffic mandatorily give a right-of-way to the right-turn vehicles to make enough time-gap for right turning. Here, it is assumed that the effects of giving a right-of-way to the right-turn vehicles are provided to a driver of approaching thru vehicle via onboard indicator. A verified traffic simulator examines the effects of prioritizing behavior on traffic flow. Numerical analysis showed that the traffic throughout in congested states was gradually improved when prioritized right-turn vehicles increases. Also, penetration of the prior right-turn vehicles is effective to mitigate not only the collision risk at the intersection but also the total CO₂ emission over the arterial road.