Authors: Xianfeng Yang, Yao Cheng, Gang-Len Chang
Conference: Transportation Research Board, 2015
Abstract: Congestion at the downstream of a freeway off-ramp often propagates the traffic queue to the mainline, and thus reduces the freeway capacity at the interchange area. To prevent the potential queue spillback, this study proposes a two-stage control model to optimize the signal plans on an off-ramp connected arterial. The first-stage of the model aims to optimize the green splits with a specified off-ramp queue length constraint. The second stage of this model is focused on the coordination of both off- ramp flows and local through traffic.