原文传递
Traffic Signal Retiming to Improve Corridor Performance
| 题名： | Traffic Signal Retiming to Improve Corridor Performance |
| 正文语种： | eng |
| 作者： | Rui Yue;Guangchuan Yang;Dongmei Lin;Aobo Wang;Zong Tian |
| 作者单位： | Dept. of Civil and Environmental Engineering Univ. of Nevada Reno 1664 N. Virginia St. MS258 Reno NV 89557;Institute for Transportation Research and Education North Carolina State Univ. 909 Capacity Dr. Suite 3420 Raleigh NC 27606;DKS Associates 720 SW Washington St. Suite 500 Portland OR 97205;Dept. of Civil and Environmental Engineering Univ. of Nevada Reno 1664 N. Virginia St. MS258 Reno NV 89557;Dept. of Civil and Environmental Engineering Univ. of Nevada Reno 1664 N. Virginia St. MS258 Reno NV 89557 |
| 关键词： | Signalized corridor; Traffic signal retiming; Signal performance index; Speed; Number of stops |
| 摘要： | Traffic signal retiming involves periodically updating existing signal coordination plans of signalized corridors. Nevertheless, there are still several limitations with the current signal retiming practice, such as managing a large set of signal coordination data, optimizing coordination parameters, diagnosing timing errors, and assessing signal coordination performance. To fill these gaps, this research introduces a novel signal retiming approach that offers transportation engineers an alternative way to assess and improve the operation of existing coordinated corridors. It allows for displaying the vehicle trajectories in the time-space diagram (TSD), based on which, transportation engineers could diagnose the potential issues with a signal coordination plan and develop an optimized signal coordination plan for the corridor. In addition, a unique signal performance index (SPI), which took into account average travel speed, number of stops, cycle length, and segment length adjustments, was developed to grade the performance of a signal coordination plan. A total of 38 signal coordination plans were applied on 8 signalized corridors in the City of Reno, Nevada, based on the proposed signal retiming approach. Through a before and after study, this research concluded that traffic signal retiming considerably improved the travel speed of the corridors and reduced delay for coordinated movements at signals. An SPI level of 76% of the retimed signal coordination plans was increased, and 16% of the retimed plans witnessed increases in either speed score or stop score. These case studies support that the proposed signal retiming approach is applicable for field practices. |
| 出版年： | 2021 |
| 期刊名称： | Journal of Transportation Engineering |
| 卷： | 147 |
| 期： | 1 |
相关文献
- Characterizing Traffic-Signal Performance and Corridor Reliability Using Crowd-Sourced Probe Vehicle Trajectories
- Massively parallelizable approach for evaluating signalized arterial performance using probe-based data
- Feasibility Assessment for Implementing Adaptive Traffic Signal Control
- Metaheuristic approach for designing robust traffic signal timings to effectively serve varying traffic demand
- Analytical Techniques for Evaluating the Implementation of Adaptive Traffic Signal Control Systems
- Developing a Traffic Signal System Optimization Plan for New Jersey, USA
检索历史
应用推荐
