Who this is for: CDL applicants
CDL Skills Test — Pre-Trip, Controls, and Road Test
The CDL skills test has three parts: (1) pre-trip vehicle inspection, (2) basic vehicle control, and (3) on-road driving test. All three must be passed with the same class of vehicle you are testing for.
Checklist
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Part 1 — Pre-trip vehicle inspection
In the pre-trip inspection portion, you walk around the vehicle while explaining to the examiner what you are checking and why. You must identify the key components in the engine compartment (fluid levels, belts, leaks), the cab interior (gauges, controls, mirrors, seatbelt), exterior lighting and reflectors, tires and wheels, brakes, steering, coupling devices if applicable, and emergency equipment. The examiner scores on whether required items are named, demonstrated correctly, and whether you identify what would constitute a defect. Points are deducted for skipped items; failing to name a required safety item may result in an automatic failure of that section. Use the pre-trip checklist in your state's CDL manual as the study guide — the exam follows the same structure.
How the pre-trip inspection is scored
Pre-trip scoring varies by state, but most use a points-deduction system where missing or incorrectly performed items reduce a starting score. Some items are "critical" — failing to check the brake system or securing the trailer coupling can result in failing the pre-trip section outright regardless of how well the rest is performed. During practice, work through the inspection in the sequence the manual specifies rather than your own order. Examiners track whether items are addressed in a logical, systematic way. An inspection that jumps randomly between components, even if all items are eventually covered, scores differently than one that follows the prescribed sequence.
Part 2 — Basic vehicle control
The basic vehicle control portion is conducted in a closed, marked off-road area rather than on public streets. You are tested on maneuvers specific to your vehicle class — for Class A, common exercises include straight-line backing, offset backing to the left and right, alley docking, and parallel parking. Each maneuver has a defined encroachment boundary marked with cones. The score tracks cone strikes, how many times you pull forward to reposition (pull-ups), and whether the vehicle exits the marked boundary. Each maneuver has a different scoring weight. Backing exercises account for the most failures in this portion — practice the physical mechanics of using mirrors and sensing trailer position before the test date.
Part 3 — On-road driving test
The on-road test evaluates vehicle operation in real traffic conditions. The examiner directs you through a predetermined route covering intersections, left and right turns, lane changes, railroad crossings, and highway driving where applicable. Scoring tracks: failure to observe traffic controls, improper following distance, inadequate mirror use, wide turns that cross the center line, failure to check blind spots before lane changes, improper braking, and related traffic safety behaviors. The examiner may also note whether you identify and respond appropriately to road conditions. The route is selected to cover the elements specified in the CDL testing standards — it is the same route used for all candidates at that testing site, so its specific challenges are consistent.
Failing one part
If you fail one section of the skills test, most states allow you to retake just that section rather than all three — but this varies by state and by how the testing session was structured. Some states require all three parts to be completed in the same session and treat a session failure as a complete reset. Before your test date, confirm with your state's CDL testing authority what their retake policy is: whether you can isolate a failed section, how long you must wait before retesting, whether an additional fee applies, and whether there is a limit on the number of retake attempts. Not all states are alike on these points, and finding out during the scheduling call rather than after a failed attempt avoids surprises.
Common failure points by test part
Each portion of the skills test has recurring failure patterns. In the pre-trip inspection, the most common failures are omitting required items — particularly emergency equipment — or incorrectly identifying what constitutes a defect versus normal condition. In basic vehicle control, backing maneuvers generate the most failures: cone strikes on repositioning attempts, and exceeding the pull-up limit before completing the exercise. In the road test, inadequate following distance and insufficient mirror checking are consistently cited. Wide turns where the front of the truck crosses the center line also appear frequently in road test failures. Understanding the scoring criteria for each exercise — which are in the state CDL manual's testing section — helps candidates focus practice time where it matters.
Third-party and employer-based testing
Some states allow certified third-party testing organizations — CDL schools, trucking companies, or independent testers — to administer the skills test rather than requiring candidates to test at a state CDL office. Third-party testers must be certified by the state and use the same scoring criteria and score sheets as state-administered tests. If your employer or training provider offers in-house skills testing, verify their state certification and confirm that the certificate they issue carries the same weight as a state-administered result. The CDL issued by the DMV is the same regardless of who administered the skills test — what matters is that the tester was properly certified.
Frequently Asked Questions
Do I need to bring my own vehicle for the CDL test?
Usually yes. Most state CDL testing programs require the applicant to provide a vehicle appropriate for the class being tested. Some CDL schools and third-party testing sites provide vehicles for testing; confirm this when scheduling. The vehicle must meet the class requirements — a Class B test vehicle cannot be used to obtain a Class A CDL.
What happens if I fail the road test — do I have to redo all three parts?
In most states, failing one part of the skills test means retaking only that section. However, some states require all three parts to be completed in the same session and treat a session failure as a full reset. Confirm the specific retake policy with your state CDL testing authority before the initial test date.
Is there a limit on how many times I can retake the skills test?
States set their own limits. Most require a waiting period between attempts and charge a fee for each retake. There is no universal federal limit, but repeated failures may prompt the state CDL office to require additional training before allowing a subsequent attempt.
Can I practice the basic vehicle control maneuvers somewhere before the test?
Yes, and you should. Practice in a vehicle similar to what you will use for the test, in a marked area if possible. Many CDL schools have practice courses set up with cones. The backing maneuvers in particular require physical repetition to develop the mirror-reading and spatial awareness skills that the test evaluates — reviewing the exercises in the manual describes what to do, but muscle memory comes from actually doing it.
What is an "automatic failure" in the skills test versus a point deduction?
An automatic failure means that regardless of how everything else goes, the test session is failed due to a single event. Automatic failures typically include: striking a pedestrian or vehicle, running a red light or stop sign, causing an accident, or certain critical safety errors during the pre-trip inspection. These are distinct from point deductions, which accumulate across the test and result in a failure only if the total exceeds the state's allowed threshold. Know which events are automatic failures in your state before the test.