The CDL skills test
By Travis Stuckert · 15-year Class A CDL driver · Published July 2026
Three parts, taken in order: prove the truck is safe, prove you can control it, prove you can drive it in traffic. Here's exactly what happens in each one, the numbers the examiner scores, and every way people fail — so none of it surprises you.
The written tests get you your permit. The skills test gets you your license — it's the part where you and a truck are in the same place as an examiner with a scoresheet. I've spent fifteen years doing professionally what this test checks in an afternoon, and the honest news is that none of it is mysterious: the test is public, the scoring is public, and the ways people fail are boringly predictable. This page walks all three parts, with the actual numbers and the actual course dimensions, each cited to the official source so you can check me.
Three parts, always in this order. Pass one to attempt the next — fail a part and the test stops there, with a minimum two-day wait in Ohio before you can retest.
Before anyone lets you near the course
- Your CLP has to be at least 14 days old. That's a federal floor — 49 CFR §383.25(e) — with no exception for experience or training. The clock starts when the permit is issued, so get it early and let it run while you train.
- Your ELDT has to be done and on file. Entry-Level Driver Training has been federally required for first-time Class A and B applicants since February 7, 2022, and it only counts if your provider is on the FMCSA Training Provider Registry. Ohio checks the registry before it lets you schedule.
- The written tests come first — the CLP itself requires passing them. That part you can drill for free with our practice tests.
Ground rules that apply to all three parts
- You test in a representative vehicle for the class and endorsements you want — eligibility runs on the vehicle's weight ratings, not what it happens to be hauling. No components marked or labeled beyond the manufacturer's own markings.
- English only, no interpreters — for you or the examiner, on every segment. Federal rule.
- There's no “80% to pass.” That percentage belongs to the written knowledge test. The skills test is scored against an examiner's scoresheet — counted pull-ups, encroachments, looks, and a list of automatic fails. Get the mechanics right and the score follows.
- In Ohio you can test at a state-run site or a third-party tester. Both are BMV-recognized. Third-party sites often schedule faster and may rent you a test vehicle.
Part 1 — Vehicle Inspection
You get 30 minutes to walk the vehicle and prove you can tell a safe truck from an unsafe one. The rule that decides most outcomes: for every item, you have to name it, point to it or touch it, and explain what you're checking it for — out loud. Touch the right part silently and you get nothing for it.
You're only inspecting what's on the official checklist, and bringing your own copy is allowed — with one condition: it starts the test clean, nothing pre-written on it, and the only marking you make during the test is ticking items off. Use the practice version below until the sequence is muscle memory.
Tractor-semitrailer, truck & trailer, or bus & trailer
0 of 32 items called out
Practice tool — items follow the official checklist structure in Ohio CDL Manual §11 (HSY 7605). On test day you must name, point to or touch, and explain each item out loud; checking it silently earns no credit. Progress saves on this device only.
The 4-step air brake check
Wrong number, wrong order, or a skipped step — automatic fail of the entire Vehicle Inspection. It's the only part of the test where a memorized number is the difference between passing and going home. Do these four, in this order:
- 1Air gauge & governor cut-out check≈ 120–140 psi
Chock the wheels if the site requires it, start the engine, and confirm the air gauge actually works. Let pressure build until the governor cuts out — that should land around 120–140 psi, or whatever the manufacturer specifies for your truck.
- 2Air leakage rate test≤ 3 psi/min single · ≤ 4 psi/min combination
Engine off, key back to the on position. With the parking brake released (and, pulling a trailer, the tractor protection valve pushed in), stand on the foot brake and keep it pinned. Give the needle a moment to settle, then watch one full minute on the clock: a single vehicle is allowed to bleed off 3 psi at most in that minute, a combination 4.
- 3Low-air warning device testactivates before 55 psi
Key still on, fan the air down by pumping the foot brake. Your low-air warning — buzzer, light, or wig-wag flag — has to come on before the gauge falls below 55 psi. If it stays quiet past that, the truck fails you before the examiner does.
- 4Emergency brake(s) testpops out at 20–45 psi
Keep working the pedal to bleed pressure down. Somewhere in the 20–45 psi window — or wherever the manufacturer set it — the parking/emergency brake valve has to snap out on its own. Pulling an air-braked trailer? Watch the tractor protection valve and the trailer's emergency valve too: neither is allowed to pop later than the tractor's.
Two leak tests, two sets of numbers — both real
The manual teaches an air-leakage check in two places, and they're different tests, not a contradiction. The static check (Section 5, general air-brake knowledge) reads the system at rest. The applied check (Section 11) reads it under full brake application — and the applied check is the one the skills test scores. A lot of students learn one set of numbers and get blindsided by the other.
| Test | Foot brake | Single vehicle | Combination | Scored on test day? |
|---|---|---|---|---|
| Static (unloaded) check — Manual §5 | Foot brake NOT applied | ≤ 2 psi/min | ≤ 3 psi/min | No — knowledge material |
| Applied (loaded) check — Manual §11.1.2 | Foot brake fully applied | ≤ 3 psi/min | ≤ 4 psi/min | Yes — this one |
What you're actually saying, item by item
The checklist tells you what to inspect; the examiner is listening for why and how. Here's the working version for the items that carry the most weight:
- Windshield & monitoring devices
- Why it matters: A blocked view means hazards you never see coming. What to check & say: No cracks or obstructions beyond the inspection sticker; mirrors and cameras clean, aimed right, and working.
- Wipers & washers
- Why it matters: Rain and snow don't wait for a working blade. What to check & say: Arms secure, blades intact, and actually demonstrate them on and off. Confirm washer fluid and demonstrate the spray.
- Heater & defroster
- Why it matters: A fogged or frosted windshield is a blocked windshield. What to check & say: Work the controls and show both of them running.
- Horn(s)
- Why it matters: It's how you warn everyone else on the road. What to check & say: Sound the air horn, the electric horn, or both — prove they work.
- Parking & trailer brake check
- Why it matters: Proves the brake will actually hold the rig still. What to check & say: With the brake set and your foot staying off the service pedal, let the truck ease against it in low gear — if it creeps, the brake failed the check. Combinations run the same test again on the trailer brake.
- Service brake check
- Why it matters: Confirms the brakes stop you evenly at low speed. What to check & say: Roll to about 5 mph, apply firmly, come to a full stop — no pulling to either side, no odd feel or delay in the pedal.
- Steering-axle tires, rims & lug nuts
- Why it matters: Your steer tires are the difference between steering and hoping. What to check & say: Tread depth, inflation, no cuts or bulges; rims undamaged; no lug nuts loose or missing.
- Suspension
- Why it matters: It's what keeps the axle where it belongs. What to check & say: Spring hangers, u-bolts, shocks, and air-ride parts all intact — nothing cracked, shifted, or leaking.
- Lights & reflectors
- Why it matters: It's how everyone else knows where you are and what you're doing. What to check & say: Right color for the position — amber up front, red at the rear — clean, and working.
- Fifth wheel coupling
- Why it matters: It's the one piece of hardware keeping tractor and trailer together. What to check & say: Jaws wrapped all the way around the kingpin's shank with zero play in the connection; the release handle tucked home under its safety latch; and on a sliding fifth wheel, the slide pins seated.
- Pintle hook / other couplings
- Why it matters: Same job as the fifth wheel, different hardware. What to check & say: Locking mechanism and latch secure, pins and cotter pins in place, safety cables or chains crossed and secured.
- Landing gear
- Why it matters: Down or dragging gear can wreck the trailer and the road. What to check & say: Fully raised, crank handle secured, no damage, and clear of the power unit in turns.
- Air & electric lines (combination)
- Why it matters: Lose a line and the trailer loses brakes or signals. What to check & say: Gladhands locked down with good rubber seals, hose jackets free of splits and rub-wear along their whole run, nothing pinched together or hanging low enough to snag — and no hiss of escaping air anywhere.
- Reflective tape (trailer)
- Why it matters: It's what makes a 53-foot wall visible at night. What to check & say: Present and secured — trailers are required to have it.
The air-brakes written test comes before any of this
Real questions from the manual, instant scoring, unlimited retakes. If you'll test in a truck with air brakes, drill this bank until it's boring.
Part 2 — Basic Control Skills
Four low-speed exercises on a marked cone course, 40 minutes total. This is the part drivers call “maneuverability,” and it rewards patience over throttle: the scoring literally hands you free pull-ups and free get-out-and-looks, which tells you everything about what the examiner values. Here's the course itself, drawn to the manual's published dimensions:
Forward Stop
Pull-ups: —Looks: —One run, one stop. Take the rig the length of the alley under power and land your front bumper inside the marked stop box — overshoot it and the exercise is blown, and a second stop isn't allowed.
Straight-Line Backing
Pull-ups: 1 freeLooks: 1 freeFinal position scoredFrom where Exercise 1 left you, ease ahead when the examiner signals — then it's reverse, holding your line the full length of the alley. You're finished only when the whole rig, cab included, is out past the cones at the other end.
Forward Offset Tracking
Pull-ups: n/aLooks: n/aA rolling left-hand lane shift: no stopping, no reverse, no stepping out. Thread the opening at the alley's mouth and settle into the parallel lane — and watch that rightmost rear tire, because it has to track through the gap between the marker cone and the painted line.
Reverse Offset Backing
Pull-ups: 2 freeLooks: 2 freeFinal position scoredNow run that lane shift in reverse: from the parallel lane, work the rig backward through the opening and down the alley until your trailer's tail sits inside the 3-foot box at the far end — with everything lined up straight when you're done.
How the course is scored
- Pull-ups
- Any time a back-up isn't working and you roll ahead to reset — off a boundary you were about to hit, or into a better angle — the examiner tallies one. Your free ones cost nothing; stack up more and they start counting against you.
- Encroachments
- A cone or boundary line touched or crossed by the vehicle — anything above door-mirror height, mirrors included, doesn't count. The moment it happens the exercise halts, and you're sent back inside the lines before you continue.
- Looks
- Stepping out mid-back-up to eyeball your position. Before your boot leaves the floor: brake set, box in neutral. Climb down and back up facing the rig, three points of contact the whole way — bus drivers are the exception, exiting front-first with a solid hold on the rail. And if that door swings open while you're still rolling, it isn't a look anymore; it's an unsafe act, and an automatic fail.
- Final position
- Where the vehicle ends up, scored on Exercises 2 and 4 specifically. Not reaching the final position the examiner instructed fails the whole Basic Control Skills test.
- Ending each exercise
- Parking brake on, transmission in neutral or park, then sound the horn. That's how you tell the examiner you're done — every exercise, every time.
Part 3 — On-Road
An examiner rides along while you drive a real route. There's no fixed time limit in the manual — it runs as long as the route runs — and you're being scored two ways at once: on specific maneuvers as they come up, and on seven general driving behaviors continuously, from the first foot of the route to the last.
The maneuvers
- Turns
- Intersections
- Urban business-district driving
- Lane changes (left, then right, on multi-lane sections)
- Expressway / rural / limited-access entry & exit
- Roadside stop & start
- Curves
- Railroad crossings (real or simulated)
- Bridge, overpass & sign identification
- Student discharge procedure (school-bus endorsement only)
If the route can't offer a situation — no railroad crossing anywhere nearby, say — the examiner can have you simulate it verbally: talk through exactly what you'd do, step by step. Treat a simulation with the same seriousness as the real thing; it's scored.
The 7 behaviors scored the whole route
These run continuously — they aren't tied to any single maneuver, and in practice they're where the road test is won or lost:
- 1
Clutch usage
Manual transmission: use the clutch for every shift, double-clutch if the box is unsynchronized, and never ride, coast on, or pop it.
- 2
Gear usage
No grinding gears, no shifting in the middle of a turn or an intersection, and keep the engine out of both the rev ceiling and the lug zone.
- 3
Brake usage
Smooth, steady pressure — no riding the brakes and no pumping them.
- 4
Lane usage
Curbs, sidewalks, and painted lane markings are all off-limits to your tires. Come out of a right turn in the curb lane and out of a left turn in the first lane to the right of the centerline, and live in the right lane except when yours is blocked.
- 5
Steering
No over-steering, no under-steering, and both hands on the wheel except while you're actively shifting.
- 6
Regular traffic checks
Mirrors and traffic, continuously — especially before, during, and after intersections and anywhere pedestrians are thick.
- 7
Turn signal usage
Signal at the right time, every time, and cancel it once the maneuver is done.
Every way to fail automatically
Pulled together from all three parts of the test. Nothing on this list is exotic — every one of them is an ordinary lapse under pressure, which is exactly why examiners watch for them.
- Doing the air brake check wrong, out of order, or skipping a step Vehicle Inspection
- Inspecting an item silently — you must name it, point to or touch it, AND explain it to get credit Vehicle Inspection
- Testing in a vehicle with components marked or labeled beyond the manufacturer's own markings Vehicle Inspection
- Not reaching the correct final position Basic Control Skills
- Going past the outer boundary line Basic Control Skills
- Causing an accident during the test On-Road
- Committing any moving violation during the test On-Road
- Not obeying traffic signs, signals, or laws On-Road
- Not wearing your safety belt On-Road
- Any unsafe act — the manual's own recurring example is forgetting to set the parking brake; opening a door while the vehicle is moving is another All three
- Not following the examiner's instructions All three
- Running over the 30-minute time limit Vehicle Inspection
- Running over the 40-minute time limit Basic Control Skills
- Communicating in a language other than English, or using an interpreter All three
How to pass it — where the leverage actually is
Everything above is what the test is. This is where I'd point your practice hours, ranked by where the automatic fails actually live:
- Over-prepare the air brake check. It's the only place in all three parts where a wrong number — not just a wrong action — fails you outright. 120–140, 3-or-4, 55, 20–45, in order, without hesitating. If you can't recite it while doing something else, you don't own it yet.
- Make the parking brake a reflex. When the manual illustrates an “unsafe act,” the example it keeps reaching for is forgetting the parking brake. Every stop, every exit, every end-of-exercise: brake, neutral, horn.
- Learn the cone course before test day, not during it. The dimensions are published — that's what the diagrams above are. Walk the layout in your head until you know where the 3-foot boxes are, and remember the free pull-ups and looks exist so you'll use them. Slow and correct beats fast and close.
- Say the inspection out loud, every practice run. Credit requires naming, touching, and explaining. If your practice is silent, you're practicing the version of the test that doesn't count.
- Drive the road test boring. The seven behaviors are watched continuously — smooth gears, smooth brakes, mirrors on a metronome, signals on time. Nobody has ever failed for being unexciting.
Does this apply outside Ohio?
The skeleton does: the three-part structure, the representative-vehicle rule, the English-only rule, the 14-day permit hold, and the automatic-fail floor are all federal — 49 CFR Part 383 — and identical everywhere. The specific cone-course exercises and dimensions on this page are Ohio's version of AAMVA's modernized test, which states adopt on their own schedules. If you're testing elsewhere, check your own state's manual for its exercise layouts before you memorize ours.
The skills test is step 4 of 5
See the whole road — qualifying, the permit, training, this test, and getting hired — in the full guide written from the driver's seat.
Skills test questions, answered straight
- What are the three parts of the CDL skills test?
- Vehicle Inspection, Basic Control Skills, and the On-Road test — in that order, and you must pass each one to move to the next. The three-part structure is federal (49 CFR 383.113), so it's the same skeleton in every state.
- What happens if I fail one part of the skills test?
- The test stops right there — you don't get to attempt the remaining parts. In Ohio you then wait a minimum of two days before you can retest, assuming a slot is open.
- How long do I get for each part?
- 30 minutes for the Vehicle Inspection, 40 minutes for Basic Control Skills. The road test has no fixed time limit in the manual — it depends on the route.
- Is the skills test scored as a percentage?
- No — that's the written knowledge test (80% correct, under 49 CFR 383.135(a)(1)). The skills test is scored against an examiner's scoresheet: pull-ups, encroachments, looks, and a list of automatic-failure acts. Get the mechanics right and the score takes care of itself.
- How long do I have to hold my permit before taking the skills test?
- A minimum of 14 calendar days — that's a federal floor under 49 CFR 383.25(e), with no exceptions for experience or training. Get your CLP early so the clock runs while you train.
- Can I use a checklist during the vehicle inspection test?
- Yes — your own copy of the official CDL Vehicle Inspection checklist is allowed, with one condition: it has to be clean when the test begins, with nothing pre-written on it. Once you're underway, ticking items off is the only marking permitted.
- What is the air brake check on the CDL test?
- A four-step sequence you do from the driver's seat: build air to governor cut-out (about 120–140 psi), run the applied leak-rate test (no more than 3 psi/min lost in a single vehicle, 4 in a combination), confirm the low-air warning triggers before 55 psi, and confirm the emergency brakes pop out between 20 and 45 psi. Doing it wrong, out of order, or skipping a step automatically fails the Vehicle Inspection.
- Can I take the skills test in an automatic?
- Yes, but your CDL will carry the automatic-transmission "E" restriction, which keeps you out of manuals. Removing a restriction later usually takes a modified test rather than all three segments again (49 CFR 383.135(b)(7)) — the exception is the tractor-trailer "O" restriction, which requires a full retake (383.135(b)(8)).
- Can I take the CDL skills test in a language other than English?
- No. Federal rule — 49 CFR 383.133(c)(5) — requires all three segments in English, with no interpreters for either you or the examiner.
- Where do I take the CDL skills test in Ohio?
- Two legitimate paths: a state-run testing site (Ohio State Highway Patrol CDL locations) or a BMV-recognized third-party tester — often a school or private testing company. Third-party sites frequently have shorter waits and may rent you a vehicle for the test.
First the permit. Then the course.
The written tests stand between you and the 14-day clock. Drill them free until a passing score is routine, then come back to this page and learn the course cold.