Apart from a change in duty status, what is the maximum interval before cargo and its securement devices must be rechecked during a trip?
Correct answer: B – 3 hours or 150 miles, whichever comes first
Federal regulation requires another cargo inspection whenever the truck has been driven for three hours or 150 miles, whichever occurs first. The driver must also inspect after a change in duty status and within the first 50 miles of the trip. Necessary securement adjustments must be made to prevent cargo from shifting or falling.
Source: Montana Commercial Driver License Manual — § 3.1, “Inspecting Cargo”, 49 CFR § 392.9(b)(2)–(4) — Inspection of Cargo, Cargo Securement Devices and Systems


