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Question:

As you're driving toward a railroad grade crossing, you spot a railroad train approaching the crossing. You must stop _________ from the nearest rail of the railroad track.

A
Explaination

As you're driving toward a railroad grade crossing and spot a train approaching, you must stop between 15 and 50 feet from the nearest rail of the railroad track. Trains are at least six feet wider than the tracks they run on, so you don't want to be too close.