ETCS-3列车完整性功能的安全目标

Safety Target for Train Integrity in ETCS Level 3

描述ETCS-3列车完整性功能的安全目标的分配过程。首先识别有关危害,以及相应的可容忍危险概率(THR)。然后,考虑THR、运营环境和实际事件统计信息,得出列车完整性功能的容许失效率(TFR)数值。

This paper describes a process for apportionment of the safety target for the Train Integrity function in ETCS Level 3. The starting point is to identify the relevant hazard, and the corresponding Tolerable Hazard Rate （THR）. A value for the Tolerable Failure Rate （TFR） for the Train Integrity function is then derived in consideration of the THR, operational circumstances and statistical information about actual incidents.