Vehicle Inspection
Domain focus
This domain tests a systematic pre-trip and en-route inspection of a passenger-carrying CMV-normally a bus designed for 16 or more occupants including the driver. You must show passenger-specific checks, not just tractor-trailer basics.
Inspection sequence
- Start at the driver's seat: seat belt, horn, gauges, mirrors, wipers, parking brake.
- Test the passenger entry door and every emergency exit: latch, warning buzzer, exit sign, and unobstructed path.
- Check aisle, standee line, seats, handrails, and overhead racks for security and clearance.
- Verify the fire extinguisher is charged and mounted; the emergency kit is present.
- Outside: tires, wheels, lights, reflectors, windshield, exhaust, steering, suspension, brake components.
- With air brakes, check pressure build-up and leakage; confirm the parking brake holds.
- Secure baggage so it cannot block an aisle or exit.
Worked example
A driver finds the rear emergency exit opens, but the dash buzzer does not sound. Reasoning: the exit is part of the evacuation system; a silent warning means the driver may not know it is open. The defect must be corrected before carrying passengers-do not note it for later.
Traps
Inspecting only the engine and tires; skipping exit operation; ignoring a blocked aisle; failing to test the parking brake; assuming a bus has no standee limits.