If during the last 100 feet of approaching a railroad crossing, you cannot see the track for at least 400 feet in both directions, you may not cross the tracks at a speed faster than _____ mph.

Respuesta :

If during the last 100 feet of approaching a railroad crossing, you cannot see the track for at least 400 feet in both directions, you may not cross the tracks at a speed faster than 15 mph.
Because this is the speed that is allowed when a person is not able to see the track for at least 400 feet in both directions.