高雄輕軌沿線交叉口安全評估之研究

近年來台灣各地積極規劃引進輕軌運輸系統。輕軌設置於平面道路除了產生效率問題外，亦會影響沿線交叉口之安全。高雄輕軌為台灣第一條營運的輕軌路線，其安全問題一直受到關注。自營運起至2017年6月止發生五起輕軌相關之肇事，雖數量不算多，但若能早日進一步了解安全問題，將有助於早日改善或預防。有鑑於此，本研究透過肇事資料，結合現場調查目前輕軌沿線交叉口的車流與駕駛行為及衝突情形，了解輕軌引進後肇事與交通特性之變化，進行交叉口安全評估，並利用灰色理論中的灰關聯分析法進而檢討安全問題及研擬改善策略。 In recent years, some local governments have actively planned Light Rail Transit (LRT) system in Taiwan. In addition to the problem of efficiency when LRT installed at the ground level, the most urgent issue is the traffic safety problem at intersections along the line. Kaohsiung Light Rail was the first light rail system opened to operation in Taiwan, its safety issue got the top public concern. Although only five LRT traffic accidents occurred until June 2017 after operation, and the number of accidents were not too large, however, to investigate these accidents can help to create improvement ideas in advance. In this regard, this study used traffic accident data, along with the traffic flow, the observed illegal driver's behaviors and the survey of road conflicts, to investigate the traffic characteristics and occurrence of the accident after the opening of the light rail system and conduct safety assessment at intersection. By using the Grey Relational Analysis method of grey theory the safety level was assessed. Furthermore, the safety problems were analyzed and the related countermeasures were proposed to enhance the safety of the LRT intersections.