Pre-Trip Inspection and Vehicle Condition
Pre-Trip Inspection and Vehicle Condition
This domain tests whether you can find the defects that make a school bus unsafe or illegal before a single child boards, and whether you know which items are school-bus specific rather than generic truck items.
School-bus-only items
- Stop arm swings out freely and its red lights work.
- Eight-way warning light system: four amber, four red, all functioning.
- Emergency exits: rear door, side door, and roof hatches open, latch, and sound the buzzer.
- Cross-view mirrors: the hood-mounted convex mirror must show the front bumper and the right front corner.
- Fire extinguisher charged and mounted, first aid kit, three warning triangles, spare fuses.
- Seat belts or child safety restraint systems, if installed, are complete and undamaged.
The walk-around
Approach with the engine off. Check front and both sides for leaks, damage, and tire condition: tread depth 4/32 inch on the front axle, 2/32 inch elsewhere, no sidewall cuts, adequate dual spacing. Test every light with a helper. Under the hood check coolant, oil, belts, hoses, and power steering fluid. In the cab check seat, belt, horn, wipers, gauges, parking brake, and service brake.
An air-brake bus gets the full static leak, applied leak, and low-pressure warning tests; skip them and you have no defense if a brake fails later. A hydraulic-brake bus gets a pedal that stays firm and a clean fluid level.
Worked example
During the walk-around you find the left rear roof hatch will not latch and the buzzer stays silent. It looks minor. It is not: an exit that will not latch and a buzzer that will not warn are both out-of-service items, and the bus does not leave the yard.
Traps
Skipping roof hatches because they are hard to reach; testing the stop arm by hand but never electrically; checking lights without a helper and guessing; signing an inspection you did not actually complete.