Queue length generation due to U-turn vehicles at center median openings on divided highways using the time series approach.

Abstract

Center median openings in divided highways are introduced for successful and safe U-turn movements. However, the delays caused to preceding vehicles by U-turn vehicles are significant. In most high-volume traffic lanes, the scenarios involving U-turning vehicles will result in impeded flows causing an undesired delay. This paper implements the time series method to analyze and predict queue generation using various real-time variables. The applicability of the aforementioned method in queue length prediction and queue prediction for each vehicle category has been discussed. In conclusion, Arrival flow rate, Waiting time of U-turning vehicle and the U-turning vehicle type has considerable effect on a developed queue at center-median opening.