Frequently Asked Questions - Collisions
With elevated rail transit, the trains do not cross paths with cars or pedestrians at street level. As a result, trains don't get in the way of pedestrians and motor vehicles, and the street-level traffic doesn't interfere with the trains. This avoids the possibility of collisions between trains and pedestrians or motor vehicles at street level. Transit riders can be sure they will get to their destination on time, regardless of traffic conditions.