Prior to stepping outside the cab to verify that exterior lamps and reflectors are clean and functional, a commercial driver must prepare the vehicle's lighting controls. Which procedure should the driver complete inside the cab before starting the walk-around to inspect the low-beam headlights and flashers?
- ALeave the ignition switch in the run position without setting the parking brakes, and verify all exterior bulb functions solely by checking the dashboard instrument cluster indicators.
- Set the parking brakes, turn off the engine, take the ignition key, and switch on the low-beam headlights and four-way emergency flashers.Cevap
- CLeave the engine running at high idle with the parking brakes released, and switch on the high-beam headlights while leaving the hazard flashers disengaged.
- DActivate only the left turn signal with the engine running, leave the key in the starter switch, and assume all side clearance lamps illuminate on the same circuit.
Cevap
The driver must set the parking brakes, turn off the engine, take the ignition key, and switch on the low-beam headlights and four-way emergency flashers before exiting the cab.
According to standard commercial motor vehicle inspection procedures, the driver must set the parking brakes, turn off the engine, remove the key for safety, and switch on the low-beam headlights and four-way emergency flashers before performing the exterior walk-around check.
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Pre-trip exterior lighting inspection setup and safety procedure
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