A Study of Optimal Detector Position of Light Rail Transit with Transit Signal Priority
| Autor: | Qiao-Qi Hsu, 徐喬琦 |
|---|---|
| Rok vydání: | 2018 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 107 LRT(Light Rail Transit) has been the critical direction of development in Taiwan. The construction plans of LRT system in many cities were included in the infrastructure plan, which was released by the government last year. In LRT system, in order to let light rail vehicles have a higher priority to pass through the intersection, the intersection is usually provided with priority signal control. The control type is known as TSP (Transit Signal Priority). In Taiwan, two priority strategies - green extension and red truncation are the main control types in LRT system with TSP. The TSP control process is highly related to the detectors. The detector detects an approaching light rail vehicle and sending information of light rail vehicle to signal controller. Then the signal controller calculates the arrival time of light rail vehicle and decides whether to conduct TSP strategies. Therefore, the location of detector would influence the performance of TSP. In Taiwan’s LRT systems, detectors are in fixed position from intersections. This study hopes to discuss the relationship between the position of the detector and the intersection performance, finds out factors that influence the optimal detector position, and explores ways to determine the optimal detector location at an intersection. In this study, the theoretical analysis method was used to investigate the relationship between the position of the detector and the average stopping time of the light rail vehicle, and to find out the optimal detector position. The result of theoretical analysis was verified by VISSIM simulation experiments. Furthermore, the applicability of the theoretical analysis method was further discussed. Through the simulation analysis of other factors that affect the position of the detector, the method for determining the optimal detector position at the intersection was finally summarized. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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