CDL permit practice test
The commercial learner's permit (CLP) is the first thing you earn on the way to a CDL, and the test behind it is the general knowledge test. Practice it here, then add the tests your class and endorsements require.
What does an anti-lock braking system (ABS) do?
What the permit test actually is
There is no separate "permit exam". The CLP is issued when you pass the general knowledge test — the one above — together with whichever additional knowledge tests your vehicle needs. The permit then lets you drive a commercial vehicle with a CDL holder beside you while you prepare for the skills test.
- Every applicant: general knowledge.
- Class A: add combination vehicles — that pairing is what makes it Class A.
- Anything with air brakes: add air brakes — skip it and the license carries an L restriction.
- Endorsements (hazmat, tanker, passenger, school bus, doubles/triples) each have their own test — see the full list.
After you pass
The permit has to be held at least 14 days before the skills test — a federal minimum that some states extend. That window is when Entry-Level Driver Training and the pre-trip inspection happen. The three-week study plan lays the whole sequence out, and what a CDL costs covers the permit fee alongside everything else.
Permit practice by state
The knowledge test is federal, but the permit is issued by your state — fees, hold times and paperwork differ. Each state page pairs the practice test with that state's own steps.
Frequently asked
- Is the CDL permit test the same as the CDL test?
- The commercial learner’s permit (CLP) is earned by passing the same general knowledge test, plus air brakes and any endorsement tests you need. The permit lets you practice with a CDL holder; the skills test comes later and turns the permit into the license.
- How long do I have to hold the permit?
- Federal rules require the CLP to be held at least 14 days before you can take the skills test. Some states set longer hold times — check your state page below.
- How much does the permit cost?
- Permit fees run roughly $10–$40 depending on the state. Training, not the permit, is the line item that decides what a CDL really costs.
- Which permit tests does Class A need?
- General knowledge plus combination vehicles — that pairing is what makes it Class A. Nearly everyone also takes air brakes to avoid the L restriction.