What should you expect from a truck displaying a diamond-shaped hazardous-materials placard as it approaches railroad tracks?

Correct answer: C – It must stop before crossing the tracks
The New Hampshire Commercial Driver’s License Manual identifies diamond-shaped placards as warnings that a vehicle carries certain hazardous materials. A placarded vehicle must stop 15 to 50 feet from the nearest rail, check that no train is approaching, and cross only when it can clear the tracks. Drivers following such vehicles should be prepared for the required stop.
Source: New Hampshire Commercial Driver’s License Manual — § 9, “Hazardous Materials”, New Hampshire Commercial Driver’s License Manual — § 9.6.12, “Stop Before Railroad Crossings”




