Train and light rail only capable of moving on track, while car can be driven everywhere, even on pedestrian path. How is train and light rail as predictable as car

Consider what happens when a train passes through a place where pedestrians cross vs. what happens when cars do the same.

How often do trains pass through places they’re not allowed to at times they’re not allowed to? How often do cars? (Red lights, stop signs, yield signs…)

How often do trains veer off course of the line they’re moving in (aka. change lanes)? How often do cars do it?