A motor vehicle containing hazardous materials must not be parked within how many feet of an open fire?
Correct answer: C – 300 feet
Federal law prohibits parking a motor vehicle containing hazardous materials within 300 feet of an open fire. The Wyoming CDL manual also states this distance in its hazardous-materials parking rules. When driving near an open fire, the driver must first determine that the vehicle can pass safely without stopping.
Source: 2024 Wyoming Commercial Driver License Manual — § 9.6.2, “Parking a Placarded Vehicle Not Transporting Division 1.1, 1.2, or 1.3 (Class A or B) Explosives”, 49 CFR § 397.11 – Fires

