How is cycle time defined in rail operations?

• A. The total time to complete a cycle from departure to return.
• B. The time a train takes to travel between two stations only
• C. The maximum allowable dwell time at a station
• D. The time for the energy system to recharge.

Answer: (A)

Cycle time is the total time it takes for a train to complete one full cycle, starting from when it departs and returning to the starting point ready to begin the next trip. This includes all parts of the service: outbound travel, stops and any dwell time at stations, and the return or turnaround movements back to the origin. It’s the complete loop duration, not just the time between two stations, not only how long a train sits at a station, and not the energy recharge time. This metric helps plan timetables, gauge service frequency, and measure fleet productivity because it captures the entire cycle necessary to repeat the service.