Journal of Korean Society of Transportation ISSN:1229-1366(Print) 2234-4217(Online) 대한교통학회지

Recently, various laws and regulations to revitalize autonomous vehicles and national, private research, development tasks are underway and the commercialization of connected and autonomous vehicles driving technologies is approaching. Accordingly, it is necessary to review the introduction of exclusive lanes for autonomous vehicles to establish a new road ecosystem. In this study, a scenario for analyzing the characteristics of mixed traffic flow according to the introduction of exclusive lanes was developed, and the scenario was analyzed in terms of mobility. As a result, merging area and diverging area deteriorated traffic flow as the LOS and MPR increased when introducing exclusive lanes, resulting in a decrease in traffic volume. In addition, in the LOS D-E and MPR 10-20% sections, when exclusive lanes were introduced, a phenomenon occurred in which lanes other than exclusive lanes were supersaturated. Therefore, “no exclusive lane” without platooning was the best in terms of mobility, and the adverse effect of the introduction of exclusive lanes was most pronounced in the LOS D-E and 10-20% MPR sections. However, except for the section when introducing exclusive lanes for connected and autonomous vehicles, the introduction of “third lane” better results in terms of mobility than the introduction of “first lane”. In future studies, all variable values applied in this study should be redefined in consideration of the specifications and technologies of autonomous vehicles currently being developed. This study is meaningful in establishing various scenarios to be considered when introducing exclusive lanes for autonomous vehicles based on connected and autonomous vehicles, and it is suggested that the results of this study can be used as basic frame when conducting research on exclusive lanes for autonomous vehicles in the future.