本文介紹台鐵現行軌道養護維修制度，及軌道品質指標(Track Quality Index ' TQI)與軌道結構狀況指標(Track Structure Condition Index ' TSCI) 在高低運量軌道系統之發展與應用。透過軌道自動檢查車蒐集軌道不整狀況， TQI 即是以軌道不整超過門檻值的損壞次數來表示，適合用於分配養護維修資源。TSCI 則是藉由目視方法將軌道構件如鋼軌、接頭、軌枕、道碴及路基等做一詳細檢查後予以評分。並將軌道管理率統結合「抽樣」、「動態分段」和「均質路段」的概念，建構一中文視窗界面之軌道養護管理系統雛型程式(Track Maintenance Management System ' TMMS) ，以供未來規劃養護維修計畫並檢視養護維修策略之成效。 The current practices of domestic track M & R activities were first reviewed. The fundamental concepts and evolutions of different composite indices including Track Quality Index (TQI) and Track Structural Condition Index (TSCI) were investigated for high and low volume track systems, respectively. Track geometry signatures are usually measured through the use of an automated inspection car. A TQI derived from the number of exceptions to a performance based threshold is appropriate for allocating M & R resources. An overall ISCI is determined based on the detailed track inspections of different rail, joints, crossties, ballast. and subgrade components through visual means. Together with the utilization of "sampling", "dynamic segmentation", and "uniform section" concepts, an automated Track Maintenance Management System (TMMS) prototype program with well-organized Windows-based graphical user interfaces was developed for future planning of track M&R management activities as well as evaluation of the effectiveness ofM & R strategies.