Shortest remaining time

依序循環排程（RR，Round-robin scheduling） 最短先做排班（SJN，Shortest job next（英语：Shortest job next）） Shortest remaining time（英语：Shortest remaining time） Weighted round-robin scheduling（英语：Weighted

the lost revenue, WMATA said that it would run only two-car trains (the shortest on the system) on the Green Line during slow periods on weekdays and evenings