MTA Subway Customer Journey-Focused Metrics: 2020-2024

Additional Platform Time (APT) is the estimated average extra time that customers spend waiting on the platform for a train, compared with their scheduled wait time. Additional Train Time (ATT) is the estimated average extra time that customers spend onboard a train, compared to the time they would have spent onboard a train if trains were running according to schedule. Additional Journey Time (AJT) is the estimated average extra time that customers spend on their journey, compared with the scheduled time. It is the sum of the additional time spent waiting on platforms (APT) and the additional time spent onboard a train (ATT). Journey Time is the average total time a customer spends on their journey waiting for and riding a specific train line. Customer Journey Time Performance (CJTP) is the estimated percentage of rider trips that are completed within 5 minutes of their scheduled time. These measures are estimated for each individual train a customer uses in their journey, also known as an unlinked trip, not all trains in their journey combined.站台额外耗时（Additional Platform Time, APT）指旅客在站台等候列车时，相较于原定候车时长额外花费的平均预估时长。列车额外耗时（Additional Train Time, ATT）指旅客搭乘列车时，相较于列车正点运行情况下的原定乘车时长额外花费的平均预估时长。行程额外耗时（Additional Journey Time, AJT）指旅客在整个行程中，相较于原定行程时长额外花费的平均预估时长，其数值为站台额外耗时（APT）与列车额外耗时（ATT）之和。行程总耗时指旅客在搭乘特定铁路线路的行程中，用于候车及乘车的平均总时长。旅客行程时效表现（Customer Journey Time Performance, CJTP）指预估的、能在原定行程时长前后5分钟内完成的旅客行程占比。上述指标均基于旅客行程中单次搭乘的列车（即独立行程段，unlinked trip）逐一估算得出，而非将整个行程的所有列车合并计算。