A train is approaching a highway-rail crossing. Which action must you avoid?
Correct answer: C – Driving across the tracks in front of the approaching train
Never enter a railroad crossing in an attempt to pass ahead of an approaching train. Trains may be traveling faster than they appear, and a driver must not begin crossing unless there is room to clear the tracks completely. Wait until the train has passed and any crossing controls permit traffic to proceed.
Source: Connecticut Driver’s Manual — Know the Road, “Railroad Crossings”



