四、轨道方面防止脱轨的措施 (一)、保证列车运行安全的轨道整修基准值的确定 1.轨道单项变形整修基准值的确定 日本国营铁路从1943年以后,考虑列车舒适度问题,根据线路的重要程度,对四大项(轨距、水平、高低、方向)单项轨道变形制定了整修基准值。为了从轨道管理方面进一步 4. Measures to prevent derailment in the track 1. Determination of the baseline value for track repairs to ensure the safe operation of the train 1. Determination of the standard value for the repair of the single track deformation The Japanese state-owned railways, after 1943, considered the issue of train comfort, The degree of importance, the four major items (gauge, level, height, direction) single rail deformation developed renovation benchmark. In order to further from the track management