Establishment of Evaluation Methods and Indicators for Improvement of Accident-Prone Road Segments and Intersections-A Case Study of City of Tainan-

• Main Authors: Wu, Ming-san, 吳銘山
• Other Authors: Wu-cheng Chen
• Format: Others
• Language: zh-TW
• Published: 1998
• Online Access: http://ndltd.ncl.edu.tw/handle/48096084332971106647

碩士 === 國立交通大學 === 交通運輸研究所 === 86 === Each year thousands of people are killed or injured in the traffic accidents in Taiwan. Highway safety and related authorities in Taiwan have been working hard to improve the highway safety through various programs. One particular program, "Project of Accident-Prone Locations Improvement in Taiwan Area", conducted annually by Ministry of Transportation and Communications focuses on road segments and/or intersections with occurrence of fatal accidents or frequent injured accidents. Under this program, traffic engineers and traffic safety experts are sent out to the field to examine the accident characteristics and also identify the problems resulting in the accidents. Then, a great amount of money are usually spent to mitigate the problems. However, there has been no systematic method to evaluate the effectiveness of this Project. As a result, it is difficult to learn the feedback form previous improvement. Therefore, the objective of this study is to develop a systematic evaluation procedure and method for highway safety authorities to evaluate the effectiveness of this Project.In this study, pre-improvement and post-improvement accident data of City of Tainan were collected for empirical analysis. Analytical Hierarchy Process (AHP) was adopted to identify critical evaluation indicators. Experts from industrial sectors, administrative sectors, and academic sectors were interviewed and surveyed using questionnaires. A model for evaluating the effectiveness of improvement was developed. Seven evaluation indicators were also identified. The relative weight of seven indicators can be quantitatively determined through questionnaires. These seven indicators are shown in order as follows: (1) reduce the severity of accident; (2) reduce accident rate; (3) reduce the total number of accidents; (4) reduce the duration of traffic congestion due to accidents; (5) negative impact of improvement on traffic; (6) direct improvemt costs; and (7) complexity of adminstaive/management coordination of improvement.