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Recently, commercialization of autonomous vehicles has been emerged as one of the important issues. Especially, it is needed to operate roadways safely in the mixed traffic condition with autonomous and non-autonomous vehicles. For this reason, implementation of managed lane specifically for autonomous vehicles has been widely suggested to minimize the friction between the autonomous vehicle and the non-autonomous driving vehicle. In this study, we analyzed the impact of implementing autonomous bus managed lane on expressway according to the market penetration rate, traffic volume (level of service), and length of influence area using microscopic traffic simulation. Particularly, the minimum weaving section length has been calculated based on different road environments. As a result, the minimum weaving section for the autonomous bus to enter the managed lane was 600-1200m. In addition, the results also indicated that weaving section length from 800-1200m was found to be the suggested entry weaving section length. It is expected that the results of this study can provide insights for designing and operating managed lane for autonomous vehicles in the future.

Assessing the Safety Effects of Expressway Managed Lane for Autonomous Bus Using Traffic Simulation