In which situation is passing NOT permitted?

Passing is not permitted at railroad crossings and marked intersections because these areas represent critical points in the roadway where visibility and safety are paramount. In these locations, vehicles may be approaching from multiple directions, and the risks associated with passing can lead to serious accidents.

Railroad crossings have the added danger of trains, which can appear suddenly and typically have limited visibility. Marked intersections are also areas where vehicles may be stopping or turning, creating potential conflicts if a driver attempts to pass. Laws and traffic regulations are designed to protect all road users by restricting passing in these high-risk areas, ensuring that vehicles can navigate the intersection or crossing safely without the added hazard of passing maneuvers.