Vehicle Inspection for an Oregon School Bus
What the Vehicle Inspection domain asks
This domain tests the pre-trip, en-route, and post-trip inspection. Oregon expects a school bus driver to find defects before children board, not after a breakdown.
Core rules
- Use a systematic seven-step walk-around: vehicle overview, engine compartment, cab controls, lights, brakes, suspension and steering, and rear of the bus.
- Check fluids, belts, hoses, and leaks in the engine compartment. Look for cracked belts, swollen hoses, and puddles under the bus.
- Check steering play and linkage; inspect springs, shock absorbers, and mounts. Test tires for tread depth, inflation, cuts, and bulges. Steering-axle tires need at least 4/32 inch tread; other tires need 2/32 inch.
- Test all lights, including school bus warning lights, stop arm, and emergency exits. Confirm the fire extinguisher, first aid kit, and reflectors are present and charged.
- During the trip, watch gauges and listen for unusual noises. After the trip, report defects and complete the writing requirement.
Worked example
You find a front tire with 3/32 inch tread. Because it is on the steering axle, the 4/32 inch minimum applies, so the bus is not safe for service. Move it out of service and report the defect; do not “watch it” for the route.
Traps
- Checking only the tires you can see without moving the bus.
- Forgetting to test emergency exits and the stop arm.
- Calling a wet spot “just water” without checking for oil or coolant.
- Skipping the post-trip defect report because the bus “drove fine.”