Developing Formulation-based Standards for Installation and Operation of Exclusive Bus Lanes on Expressways using real-world data and simulation

Abstract

Abstract Korea operates exclusive bus lanes (XBLs) on many of its expressways. As XBLs convert one lane of regular use traffic into bus-only traffic, they have a large impact on traffic flow, so careful judgment is required to determine if the operation is effective. However, XBLs have been installed based on only political judgment. Therefore, we sought to establish standards for the operation of expressway XBLs using the micro-traffic simulation and the multi-criteria value function methodology. Various scenarios were established based on traffic volume. Through an expert survey, the average speed and speed deviation values were determined. Also, value points were converted using average speed and speed deviation extracted from the simulation. In addition, quantitative operation standards were established using the converted value scores. Using the results of this study, we establish standards for the operation XBLs. Citing the results of this study, the new guidelines were implemented in February 2021, and sections of some XBLs have been abolished. Through this study, quantitative standards for the operation of XBLs, one of the management lane techniques necessary for sustainable highway operation, were prepared and applied to actual expressways. It is also expected to have a positive effect on safety, efficiency and environment.