CDL practice test
Tell the grid what you want to drive and carry, and it computes which of the eight CDL tests you need. Every question and every explanation are free.
What your licence will say
Class
Pick what you will drive and this fills in.
Endorsements
Tick what you will carry and each one adds its letter.
Restrictions
Air brakes remove an 'L' restriction rather than adding an endorsement. Most drivers take it because most heavy vehicles have air brakes.
FederalThe class and endorsement letters are the same designations wherever the licence is issued.
What each one costs, how many questions your test asks, and whether doubles and triples are issued at all are set by your state. Name it above and this page says which.
| Test | A | B | C | P | S | H | N | T |
|---|---|---|---|---|---|---|---|---|
| General Knowledge | required | required | required | required | required | required | required | required |
| Air Brakes | optional | optional | optional | optional | optional | optional | optional | optional |
| Combination Vehicles | required | not required | not required | optional | optional | optional | optional | optional |
| Hazardous Materials | not required | not required | not required | not required | not required | required | not required | not required |
| Passenger | not required | not required | not required | required | not required | not required | not required | not required |
| School Bus | not required | not required | not required | not required | required | not required | not required | not required |
| Tanker | not required | not required | not required | not required | not required | not required | required | not required |
| Doubles / Triples | not required | not required | not required | not required | not required | not required | not required | required |
Pick a class or a cargo to see the tests you need. Until then, every row here shows a test that exists.
The five endorsement tests have a page each explaining what they cover. No question bank here yet, and none is claimed.
GK-001
Before a trip, what should a driver do with the vehicle inspection?
These questions are written to the federal knowledge areas every state is required to test. They are not your state's questions — no free site has those. Your state writes its own test from its own CDL manual, and that manual is the thing to study.
The eight tests
The knowledge tests a CDL candidate can take. Three are core; five are endorsements. The matrix above computes which you need.
Practice banks — questions and explanations, free
Endorsements — what each one covers, written up
Each of these has a page explaining what the endorsement is, what it lets you carry and what it takes beyond a knowledge test. None of them has a question bank here yet, and none is claimed to.
Starting with the permit
Before the skills test and the licence comes the commercial learner’s permit — the document that lets you practise while you train. The permit, what it requires and which tests it takes are explained here.
What this is
This is a router and a practice set. The router computes which knowledge tests you need from three inputs — what you want to drive, what you want to carry, and your state. The practice questions are written to the federal knowledge areas every state is required to test, and every correct answer comes with its full explanation, free.
It is not an official test, it is not affiliated with any state licensing agency or testing vendor, and it is not driver training. Your state writes its own test from its own CDL manual, and that manual is the thing to study.
The site counts what you got right and reports it as raw correct counts by test. It does not produce a pass or fail verdict, because each state sets its own passing standard on a question pool this site does not have.
This site prepares for a written knowledge test. It is not driver training, it is not ELDT, and nothing on it substitutes for your state's CDL manual or a registered training provider. Air brake procedure, coupling, load securement and hazardous-materials handling are safety-critical, and this site never teaches them as something to do.
Common questions
- Which CDL tests do I need?
- It depends on what you want to drive and what you want to carry. The requirement matrix on this page computes it for you: pick your class and the cargo you plan to haul, and the grid fills in which of the eight knowledge tests you must take, which are optional, and which do not apply to you.
- Are these real CDL exam questions?
- No. Every question here was written for this site, to the federal knowledge areas every state is required to test. No free site has a state's own test questions — your state writes its own test from its own CDL manual. These questions prepare you for what the test covers; they are not a state's question pool.
- Is this an official state site?
- No. This site is not affiliated with, endorsed by, or sponsored by any state licensing agency or any testing vendor. It is an original practice site. Your state's licensing agency is the source for your state's requirements, fees, and manual, and this site points you to it.
- Why doesn't this site give me a pass or fail result?
- Because each state writes its own test from its own manual and sets its own passing standard. This site cannot score a test it does not have. It reports raw correct out of total, by test, which is all an uncalibrated question bank can truthfully tell anyone.
- What is the difference between a Class A, B and C licence?
- Roughly: Class A is for a combination of a power unit and one or more trailers, Class B is for a single heavy vehicle or a large bus, and Class C is for smaller vehicles carrying passengers or hazardous materials. The classes-explained guide on this site walks through what each lets you drive.
- What do I get for free?
- The router and the full requirement matrix, all eight practice banks with the full explanation for every item, raw counts by test, and every verified state's requirements. The Route — the order to book everything and the three clocks that run at the same time — is behind a single optional gate.
- What happens to my answers?
- Nothing. Your answers stay in your browser and are never transmitted. There is no account, no cookie, and no network request carrying your choices. If you open the Route, your choices are held in that tab's session storage for the trip out and back, and your browser deletes them when you close the tab.
- How is the site funded?
- By a single optional gate. Every question, every explanation and every verified state's requirements are complete on their own; the gate adds the Route. No employer in the trucking industry pays for anything here, and nothing you answer is ever sold or shared.