CDL Pre-Trip Inspection Test: What Examiners Expect on Test Day

The required skills are in 49 CFR 383.113. Every CDL applicant must show pre-trip vehicle inspection skills, basic vehicle control skills, and safe on-road driving skills for the vehicle class they expect to operate.

The inspection comes first, and the examiner listens as you explain what you check and why. It is a spoken and hands-on exam, so practice saying the steps out loud. Training under ELDT (Entry-Level Driver Training) happens before this test, and you can confirm your school in our guide to the FMCSA Training Provider Registry.

The rule says you must identify each safety-related part of the vehicle and explain what needs to be inspected to ensure safe operating condition. It lists the areas below, so a good routine walks the truck in the same order every time.

If the test vehicle has air brakes, the rule adds six specific skills. You locate and name the air brake controls and gauges, check brake adjustment and air connections between vehicles, and confirm the low-pressure warning devices activate.

With the engine running, you also show the system keeps adequate air, that the pressure build-up time is within limits, that the alarms and emergency devices release at the right pressure, and that the brakes perform properly in an operational check. Practice this sequence until you can do it without a cheat sheet.

Under 49 CFR 383.135, you must perform all of the listed skills and reach the scores in the examiner manual for your vehicle type. Failing to obey traffic laws, causing an accident during the test, or committing any offense the manuals list as an automatic failure ends the test.

Your state’s CDL manual and the school’s grading sheet show how it applies locally. Ask your instructor for the exact checklist they grade against and practice from that, because states can add their own forms and scoring details.

The vehicle you test in shapes your license. A truck without air brakes adds an air brake restriction, and air-over-hydraulic brakes add a full air brake restriction. You can read how an automatic transmission affects your license in our CDL automatic transmission restriction guide.

Before test day, confirm your school or the test site provides a truck with the brakes and transmission you want on your CDL. Then pick the license class that matches your goals: Class A CDL training or Class B CDL training.

Choose one route around the truck and use it every time. Say each part and what you look for, touch what you can safely touch, and repeat the air brake sequence until the order is automatic. Short daily repetition works better than one long session.

A school with plenty of range time makes this easier. Use our questions to ask a CDL school to find out how many practice sessions you get on the inspection and whether you test in the same truck you train in.