Three types of rescheduling operations are considered : ( 1 ) speed and time control to reduce regular dwell time and / or running time ; ( 2 ) holding the preceding and / or succeeding succeeding train to regulate headway ; and ( 3 ) cancellation the operation of delayed trains 系统绩效指标包括:旅客观点之平均旅行时间与列车乘载率差异,及行车调度人员观点之延滞列车站数与系统延滞时间等。