A motor vehicle carrying hazardous materials may not be parked within what distance of an open fire?
Correct answer: D. – 300 feet
Federal regulation prohibits parking a motor vehicle containing hazardous materials within 300 feet of an open fire. A driver also may not operate such a vehicle near an open fire without first determining that it can safely pass without stopping. The 300-foot requirement applies to parking, not merely to unattended vehicles.
Source: Virginia Commercial Driver’s Manual — § 9.6.2, “Parking a Placarded Vehicle Not Transporting Division 1.1, 1.2, or 1.3 Explosives”, 49 CFR § 397.11 — Fires.

