Institute of Transportation, MOTC

Wang Zhao-Sian, 2001.07
Institute of Traffic and Transportation, National Chiao Tung University

　　The essential characteristic of railway industry is its continuous transport, and one of the important factors that are influenced on is the quality of the railroad . According to the above point , the main purpose of this study is to explore the priority order of track maintenance and finds out more reasonable and proper way of arrangement.

　　This study, begins with reviewing relevant literature on track maintenance , and investigating the existing conditions of T.R.A . In order to obtain a combined index of track maintenance, that priority ranking railroad devastation and track defective issues are then discussed. Current railroad system operated by Taiwan Railway Administration comprise the west line (mountain line and ocean line), Bai－Hwai line and Nan－Hwai line, of which the west line (mountain line) is the most important route .There fore the west line (mountain line ) is selected as the scope of this research .

　　The procedure of developing a combined index of track maintenance consists of two parts. First, find out the important factors resulting in the track defective, and then develop five regression models of track defective using real data of the west line. Second, conduct a questionnaire survey to obtain weights of these five track defectives from railway experts using technique of Delphi-AHP.

　　Apply by illustration , the above mentioned indexs calculated can examine the relative nrrds for track maintenance .By that, the order and occasion of track maintenance can then be arranged, and the limited maintenance expenditure can be used in proper time and places to maximize the utilization of track maintenance resource.