When you are within 100 feet of a railroad crossing and you cannot see the tracks for 400 feet in both directions, the speed limit is:

• A. 25 mph
• B. 20 mph
• C. 15 mph
• D. 10 mph

Answer: (C)

When you’re within 100 feet of a railroad crossing and you cannot see the tracks for 400 feet in either direction, you must slow to 15 mph. This lowered speed gives you more time to react and stop if a train appears, since trains can be approaching quietly and braking distances are long, especially with limited visibility.

In this scenario, 15 mph is the mandated speed to ensure you can stop safely if a train is near. Higher speeds would reduce your ability to stop in time, while a much slower speed isn’t the required limit in this condition. Always be prepared to stop if warning signals are active or a train is approaching.