When a train is receiving or discharging passengers across an intervening track, what must not be present on the intervening track?

In situations where a train is receiving or discharging passengers across an intervening track, it is crucial to ensure that no trains or moving equipment are present on that track to maintain safety. The presence of trains or track cars can pose significant hazards, including the risk of collisions, which could endanger passengers while they are boarding or disembarking.

Moreover, having any moving equipment, particularly on adjacent tracks, increases the risk of accidents. This is because passengers may not be fully aware of their surroundings while focusing on safely entering or exiting the train. Therefore, a secure environment is paramount.

The inclusion of both trains or track cars and the stipulation that no other trains should be present, particularly non-passenger trains, ensures comprehensive safety protocols are adhered to, thus protecting individuals during these critical moments of passenger transition. This makes the choice indicating that both trains and specific types of trains should not be present on the intervening track a clear and definitive requirement for safe operations.