一、在系统工程原理的指导下优化“二三五”车务部门的特点之一是线长点多，人员分散，单独作业。我分局车务系统共有18个段、86个车站、3个线路所，9000多名职工。要研究车务安全必须从这个庞大的系统考虑。特点之二是作业繁杂，安全管理层次多。作业上，接发列车、调车等多工种、多岗位的作业；管理上分局、站段、车 First, under the guidance of system engineering principles to optimize “two three five” one of the characteristics of the vehicle department is the line length and more staff dispersed, separate homework. My branch car system a total of 18 sections, 86 stations, 3 lines, more than 9000 workers. To study vehicle safety must be considered from this huge system. The second feature is complicated operation, safety management and more. Job, then send and receive trains, shunting and other multi-species, multi-post operations; management branch, station segment, car