Safety Assessment at Light Rail Intersections in Kaohsiung
| Autor: | Ya-Lin Chen, 陳雅琳 |
|---|---|
| Rok vydání: | 2017 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 105 In recent years, light rail transport system has constantly been planning and constructing in Taiwan. Light rail is placed in the surface intersection will generate not only efficiency problems but also affecting the safety of the intersection along LRT. The media has so far reported five accident reports about light rail. However, assignment of traffic police to ease cannot solve the problem. In view of this, this study through the literature review, accident information and field investigation of the current light rail along the intersection, to understand the change of accident`s characteristics before and after placing the LRT, as well as assessing and comparing the safety of intersections. This study is divided into three parts: accident data analysis, field observation data analysis, and intersection safety assessment. The first part is through the before-and-after study used the equivalent number of accident and weighted severity value as the assessment of the intersection safety indicators. Additionally, we will explore the different collision types and contributor of the accident, understand the impact for all road users after setting up the LRT on the intersection and propose the traffic engineering improvement measures. Foreign experience pointed out that the majority of the contributors of the accident related to LRT is from the driver did not comply with laws and regulations, not alert to the road environment or personal misjudgment caused by. Thus, the second part of to collect traffic flow at the intersection by the digital video. Through the literature to develop possible violations of risk behavior in Kaohsiung, and then analyze its relevance with the road environment factors. In addition, this study assumed that the severity of the accident would be absolutely related to the vehicle speed before the accident, thus calculating the speed from the different way crossing the rail, to understand the seriousness of the accident. Finally, we used the grey relational analysis method of grey theory to assess the straight and steering vehicles, then evaluate the risk of the collision between the train and the motor vehicle in the future by the number of irregularities, the speed and the potential conflict point of the intersection, and determine the order of improvement. The results of the first part showed that the number of the side impact is significantly reduced after setting up the LRT, as well as decreased the offender. The second part showed that there are significant correlations between irregular risk behavior and LR route arrangement.In the road safety assessment of straight and steering vehicles, the most need to improve the intersection of the road were kaixuan zhenxing road and kaixuan qianzhen road. This study aims to discuss the safety of the intersection after constructing the light rail and make a gray correlation analysis to evaluate and decide to improve the priority order. It is suggested that if there has a sufficient number of LRT-related incidents, a more objective assessment model can be further established to estimate the impact factor or to predict the number of future events. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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