National guide

Commercial Driver License

Get a high-level guide to CDL classes, endorsements, medical rules, and testing paths before using your state agency instructions.

At a glance

What matters first

A commercial driver license is more regulated than a standard license because federal CDL standards combine with state testing, identity, medical, and issuance rules. The right path depends on vehicle class, endorsements, restrictions, entry-level driver training, medical certification, and whether the driver is applying, upgrading, transferring, or renewing.

Checklist

What to have ready

Current driver license and identity documents
Proof of lawful presence and residency when required by the state
Medical examiner certificate or self-certification category when applicable
Entry-level driver training records for covered first-time CDL or endorsement applicants

Step by step

How the process usually goes

Determine the CDL class and endorsements required for the vehicle and cargo.
Confirm knowledge tests, skills test scheduling, medical certification, and training requirements.
Use the state licensing agency and federal CDL guidance before paying fees or scheduling a test.

CDL decisions to make first

Before applying, identify the commercial driving privilege you actually need. A passenger endorsement, school bus endorsement, hazardous materials endorsement, air brake restriction, or automatic-transmission restriction can change the testing path.

Class A, Class B, or Class C license path
Passenger, school bus, tank, double/triple, or hazardous materials endorsements
Medical certification and interstate or intrastate driving category
Skills test vehicle type and any restrictions that may appear on the license

FAQ

Common questions

Are CDL rules federal or state rules?

Both. Federal rules set many CDL standards, but state agencies issue the credential, administer tests, apply fees, and manage local appointment and document requirements.

Do all CDL applicants need entry-level driver training?

Not all. Entry-level driver training applies to specific first-time CDL, upgrade, and endorsement situations. Verify your exact path before scheduling testing.

State starting points

Find the official path in your state

States handle this topic differently — it may sit under driver licensing, ID cards, boating, or a separate agency. Start from your state page and use its official agency link for current forms, fees, and rules.