Transit-oriented traveling mode is recognized as one of the most effective strategies for improving traveling service level and decreasing travel times, stops and delay. However, the transit system will also bring some new bottlenecks. The influence caused by bus bay stop upstream should be considered for traffic signal optimization. This paper proposes a traffic signal optimization model for intersection and bus bay stop upstream unit, which targets for minimizing traveling time and considering the effects caused by bus bay stop upstream. First, the equivalent volume method is addressed for quantified the influences generating by transits’ lane-changing. Then, the influences are taken into account when solving the traffic signal optimization algorithm. Finally, the proposed optimization model is evaluated using a VISSIM model calibrated with field traffic volume and traffic signal data of the intersection of Qingliangmen Boulevard and Nenjiang Road in Nanjing, China. The evaluation results illustrate that analytical and simulation calculation results have similar performance in reducing traveling delay. Therefore, the proposed traffic signal optimization method performs well at the intersection with bus bay stops upstream.
Transport engineering Intersection signal optimization Near-side bus bay stop Transits’ lane-changing behavior
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This research was supported by the Natural Science Foundation of Jiangsu Province (Grant No. BK20181307), Postdoctoral Science Foundation of China (Grant No. 2018M630505) and National Natural Science Foundation of China (Grant No. 51508161).
Conflict of Interests
The authors declare that there is no conflict of interests regarding the publication of this paper.
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