CDL Permit: The Commercial Learner’s Permit (2026)

The "CDL permit" is officially the Commercial Learner’s Permit (CLP). It is the practice step between passing your written tests and taking the CDL skills test — and it comes with strict federal rules. Here is exactly how it works.

Requirements verified July 20, 2026 against FMCSA (49 CFR 383.25)

What a Commercial Learner’s Permit is

A Commercial Learner’s Permit lets you practice driving a commercial motor vehicle on public roads before you are fully licensed. Think of it the way a regular learner’s permit works for a car — except the rules are set federally, in 49 CFR 383.25, so the core of how a CLP works is the same in every state. Your state agency issues the permit, but it cannot waive the federal requirements below.

The knowledge tests to get one

To be issued a CLP, you must pass the general knowledge test covering the rules of operating a commercial vehicle. If you want an endorsement that is allowed on a permit, you take that endorsement’s knowledge test as well. You also need a valid regular driver’s license and must meet your state’s identity, residency, and age requirements.

The general knowledge test is where most people either pass on the first try or lose a day retaking it. Practicing the real question types first is the difference. Use ourfree general knowledge practice test to check yourself before you go.

The 14-day hold rule

How long a CLP is valid

A CLP is valid for up to one year from the date it is issued, without having to retake the knowledge tests. If your permit expires before you pass the skills test, you generally have to test for the permit again. Some states allow a renewal within the year — check with yours, and plan your skills test so you are not racing the expiration date.

You must be accompanied by a CDL holder

A CLP is a practice permit, so you can never drive the commercial vehicle alone. At all times, you must be accompanied by someone who holds a valid CDL for the class and endorsements of the vehicle you are driving, and that person must be physically present in the front seatnext to you. There are no exceptions to this while operating on a permit.

Which endorsements a CLP can carry

A permit can only carry three endorsements, and each comes with limits:

• P (passenger) — allowed, but you cannot carry passengers other than a trainer, examiner, or other authorized person.
• S (school bus) — allowed, with the same no-passengers limit.
• N (tank) — allowed only with the tank empty; you cannot haul liquid or gas cargo on a permit.

A hazmat (H) endorsement is not allowed on a CLP at all, because hazmat requires a TSA security background check that goes with the full license, not the permit. Learn more on ourendorsements guide and thehazmat endorsement page.

Minimum age

The federal minimum age for a CLP is 18. At 18 you can generally work toward a CDL to drive within your own state (intrastate). To drive across state lines (interstate) or to haul hazardous materials, you must be 21. Your state sets the exact intrastate rules within that federal frame.

Where the CLP fits in the process

The permit sits in the middle of the path to a CDL: after your DOT physical and ELDT training, and before the skills test. See the full sequence onhow to get a CDL, and the national baseline on CDL requirements.

CDL permit FAQ