You read about an accident at a railroad crossing and wonder about the cause. perhaps the car's driver overestimated the distance of the train because the parallel tracks stimulated the depth cue of linear perspective.

The answer is : monocular depth

Monocular depth affect the perception that is held by an individual on how far an object is located based on how big the object look like in that individual's vision.

When the driver cross the railroad, the driver most likely thought that the train is still located far away form him/her because it looks small in the driver's perception. He misjudge it and caused the crash in the end.

what are the events? you didnt list any

answer; i believe its called ; checks   and balances;