期刊
TRANSPORTATION RESEARCH PART C-EMERGING TECHNOLOGIES
卷 125, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.trc.2021.103081
关键词
Lane changing; Car following; Relaxation; Traffic microsimulation; LSTM; Capacity drop
资金
- U.S. Department of Transportation's University Transportation Centers Program
Lane changing dynamics are crucial for traffic microsimulation, but often overlooked. This paper introduces a relaxation model that enhances the accuracy and realism of simulated vehicle trajectories.
Lane changing dynamics are an important part of traffic microsimulation and are vital for modeling weaving sections and merge bottlenecks. However, there is often much more emphasis placed on car following and gap acceptance models, whereas lane changing dynamics such as tactical, cooperation, and relaxation models receive comparatively little attention. This paper develops a general relaxation model which can be applied to an arbitrary parametric or nonparametric microsimulation model. The relaxation model modifies car following dynamics after a lane change, when vehicles can be far from equilibrium. Relaxation prevents car following models from reacting too strongly to the changes in space headway caused by lane changing, leading to more accurate and realistic simulated trajectories. We also show that relaxation is necessary for correctly simulating traffic breakdown with realistic values of capacity drop.
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