Vehicle Inspection
Vehicle Inspection tests the pre-trip, en route, and post-trip checks that keep a commercial vehicle legal and safe. The exam expects you to know what to inspect, how to test brakes and coupling, and when to recheck cargo and equipment. A complete inspection is evidence of control; a skipped item is a defect waiting to happen.
Core rules
- Pre-trip: check lights, reflectors, tires, wheels, rims, lug nuts, brakes, steering, suspension, exhaust, frame, coupling devices, cargo securement, fluids, and emergency equipment.
- Perform the required brake tests: parking brake test, service brake test, and air-leak test. Know the pass/fail limits for your vehicle combination.
- Check coupling on combination vehicles: fifth-wheel jaws closed, kingpin engaged, safety latch secured, air lines and electrical cord connected, landing gear raised.
- En route: check cargo securement after the first 50 miles, then every 150 miles or 3 hours. Watch gauges, mirrors, tires, and load shifts.
- Post-trip: report defects in writing. Do not sign off a vehicle with a known safety defect.
- A rental or borrowed tractor is not “ready” until you inspect it yourself.
Worked example
A driver leaves a terminal with a loaded flatbed. At the first 50-mile check, one strap is loose and the load has settled slightly. The driver stops, redistributes tension, adds a strap because the aggregate WLL is now marginal, and records the check. Continuing without correction could let the load shift in a curve or brake application. The inspection rule is not paperwork-it is a chance to catch movement before it becomes a crash.
Traps
- Checking only lights and calling the pre-trip complete.
- Skipping the under-hood and coupling checks.
- Assuming a rental tractor was inspected by someone else.
- Ignoring a defect because the trip is short.