Pre-Trip Vehicle Inspection Flashcards

When inspecting the steering system during a pre-trip inspection, what should you check for on the steering wheel itself?

Answer: Cracked or broken spokes

A cracked or broken steering wheel is a defect that must be reported and repaired before driving.

During a pre-trip inspection, how should you test the low air pressure warning signal?

Answer: Fan off air pressure by pressing the brake while the engine is off

With the engine off, fan the brakes to reduce air pressure until the warning light or buzzer activates, which should happen before pressure drops below 60 psi.

What is the minimum tread depth required for front tires on a commercial vehicle?

Answer: 4/32 inch

Front tires must have at least 4/32 inch tread depth; all other tires require at least 2/32 inch.

During an engine compartment check, you notice the oil level is between the ADD and FULL marks. What should you do?

Answer: This is acceptable — drive the vehicle

An oil level between ADD and FULL is within the normal operating range and the vehicle may be driven.

What should you check when inspecting the exhaust system during a pre-trip?

Answer: Loose, broken, or missing clamps or pipes

Loose, broken, or missing exhaust components can allow deadly carbon monoxide to enter the cab.

Which of the following is NOT part of the in-cab inspection during a CDL pre-trip?

Answer: Inspecting the fifth wheel locking mechanism

The fifth wheel locking mechanism is checked during the coupling system/external inspection, not the in-cab inspection.

When checking the battery during a pre-trip inspection, what are you looking for?

Answer: Secure mounting, no cracks, and no corrosion on terminals

You visually inspect the battery for secure mounting, no cracks in the case, and clean terminals free of corrosion.