How to Get a Commercial Learner’s Permit: Medical Exam and Tests

To get a commercial learner’s permit, you apply at your state’s driver licensing agency after meeting federal eligibility rules: hold a regular driver’s license from the same state, pass a DOT medical exam, clear the FMCSA Drug and Alcohol Clearinghouse, bring proof of identity and residency, and pass the written knowledge tests for the class of vehicle and any endorsements you want.¹ The CLP is a training permit, not a full license, and the road test comes later. Fees run roughly $10 to $100 depending on the state.

Confirm You Are Eligible

You must be at least 21 years old to drive a commercial vehicle across state lines. Most states allow you to start at 18 if you plan to drive only within your home state, though an 18-year-old CLP holder is limited to intrastate routes until turning 21.²

You also need a valid non-commercial driver’s license from the same state where you’re applying. Holding a regular license in one state and applying for a CLP in another is not allowed.³ You’ll also be asked to list every state where you’ve held any type of driver’s license in the past ten years, and the agency uses that list to pull your record across jurisdictions. Outstanding suspensions or revocations in another state will block your application.

Pass a DOT Medical Exam

Before you apply, get a medical examination from a provider on the FMCSA’s National Registry of Certified Medical Examiners. If you pass, the examiner issues a Medical Examiner’s Certificate (Form MCSA-5876), which you submit with your application.⁴ The certificate must stay valid the entire time you hold the permit. If it lapses, your driving privileges can be immediately downgraded.

At the licensing office you’ll also self-certify into one of four operating categories: non-excepted interstate, excepted interstate, non-excepted intrastate, or excepted intrastate. Most people entering the industry choose non-excepted interstate, which requires the federal medical certificate to be on file with your state. The FMCSA publishes a decision guide covering each exception.⁵ Pick the right one at the start; the wrong category creates problems later.

Clear the Drug and Alcohol Clearinghouse

Since November 18, 2024, state licensing agencies must check the FMCSA’s Drug and Alcohol Clearinghouse before issuing or renewing any CLP or CDL. A “prohibited” status means your application will be denied, and any existing commercial driving privileges will be downgraded.⁶

A prohibited status results from a positive drug or alcohol test, a refusal to test, or another violation under federal testing rules. Clearing it requires completing the return-to-duty process, which involves evaluation by a substance abuse professional and follow-up testing. Resolve any prior violations before you apply, or you’ll lose your time and fees at the counter.

Gather Your Documents

Federal rules require proof of three things: identity and legal status, Social Security number, and state residency.³

For citizenship or legal residency, a U.S. passport or a certified birth certificate is the most common choice. Lawful permanent residents can use their permanent resident card.
For your Social Security number, the card itself is simplest, but a W-2 or pay stub showing the full number also works.
For state residency, bring at least two documents showing your name and current home address, such as utility bills, a lease agreement, or a property tax statement.

Also bring your completed medical certificate (Form MCSA-5876) and the state’s CLP application form, usually downloadable from your licensing agency’s website. Showing up with an incomplete package is the most common reason applicants get sent home.

Pass the Knowledge Tests

The CLP is issued based on written knowledge tests. No driving exam is required at this stage; the road test comes when you apply for the full CDL. Every applicant must pass the General Knowledge test, which covers vehicle inspections, basic control, gear shifting, space management, emergency procedures, and hazardous-weather driving.⁷ Study the CDL manual your state publishes; the test draws from roughly 20 topic areas.

Depending on what you plan to drive, you may need endorsement-specific tests as well:

Air brakes, required if your vehicle uses air brakes. Failing or skipping this test places a restriction limiting you to vehicles without air brake systems.
Combination vehicles, required for Class A permits covering tractor-trailers and similar rigs.
Tanker (N), covering how liquid movement inside a tank affects braking and turning.
Passenger (P), for vehicles designed to carry 16 or more people.
School bus (S), required on top of the passenger endorsement.
Hazardous materials (H), which also requires a TSA background check.
Doubles and triples (T), for pulling more than one trailer.

You can take multiple endorsement tests at the same visit. Most states charge one application fee that covers all the tests taken together, with a smaller additional charge for coming back later. Test for every endorsement you might realistically need on the first trip.

At the Licensing Office

The clerk reviews your document package, runs the Clearinghouse query and other background checks, and administers a vision screening. Federal standards require at least 20/40 acuity in each eye (with or without corrective lenses), binocular vision of 20/40, a horizontal field of vision of at least 70 degrees per eye, and the ability to distinguish red, green, and amber traffic signals.⁸

After the document review and vision check, you move to the computerized testing area for the knowledge exams. Once you pass, the agency issues your CLP, typically as a paper document separate from your regular license. Application and testing fees vary by state and generally run between $10 and $100.

What the CLP Lets You Do

A CLP is a training permit. You can only drive a commercial vehicle on public roads with a CDL holder in the front passenger seat next to you. That person must hold the same class of CDL and any endorsements needed for the vehicle. For passenger vehicles, the supervising CDL holder can sit directly behind you or in the first row behind the driver instead.⁹

Other restrictions apply on top of the supervision rule. A passenger (P) or school bus (S) endorsement on a CLP does not let you carry actual passengers; only auditors, test examiners, other trainees, and your supervising CDL holder can be on board. A tanker (N) endorsement lets you practice with an empty tank vehicle, but you cannot haul any liquid or gas cargo. And CLP holders cannot transport hazardous materials under any circumstances, regardless of endorsements passed.

The permit is valid for a maximum of one year from the date it was first issued. If your state issues it for a shorter period, it can be renewed, but the total time from initial issuance still cannot exceed one year.⁹ If your CLP expires before you pass the skills test, you start over with new knowledge tests and a new application fee.

What Comes After the CLP

Federal rules currently require you to hold the CLP for at least 14 days before you can take the CDL skills test.⁹ The rule is meant to ensure real behind-the-wheel practice before testing. FMCSA has proposed eliminating this waiting period, but as of this writing the 14-day requirement remains in effect.¹⁰ Don’t schedule your skills test for the day after you get your permit.

You also need to complete entry-level driver training (ELDT) before you can take the skills test. Since February 2022, first-time Class A or Class B applicants, drivers upgrading from Class B to Class A, and anyone adding a passenger (P), school bus (S), or hazmat (H) endorsement must train through a provider listed on the FMCSA’s Training Provider Registry.¹¹ The skills test is closed to you until completion is recorded in the registry.¹² Programs typically run two to six weeks and cost several thousand dollars, though some employers sponsor training.

If hazmat work is part of your plan, the H endorsement also requires a TSA security threat assessment involving fingerprints and a background check. The fee is $85.25, or $41 for applicants who already hold a valid Transportation Worker Identification Credential (TWIC).¹³ The assessment can take several weeks, so start it early.

What Can Disqualify You

Some violations in your driving or criminal history will prevent you from getting a CLP or cost you one you already hold. Major disqualifying offenses include driving under the influence, refusing an alcohol test, leaving the scene of an accident, using a commercial vehicle to commit a felony, and causing a fatality through negligent driving.¹⁴

Serious traffic violations carry their own consequences, especially when they stack. These include speeding 15 mph or more over the limit, reckless driving, improper lane changes, following too closely, and texting or using a handheld phone while operating a commercial vehicle. Two serious violations within a three-year window will disqualify you.¹⁴ Some disqualifications last a year or more, and a few, like using a commercial vehicle in drug trafficking, are permanent. If your record concerns you, ask your state licensing agency before paying any fees.

1
Federal Motor Carrier Safety Administration. How Do I Get a Commercial Driver’s License
2
Federal Motor Carrier Safety Administration. What Is the Age Requirement for Operating a CMV in Interstate Commerce
3
eCFR. 49 CFR 383.71 – Driver Application and Certification Procedures
4
Federal Motor Carrier Safety Administration. Medical Examiner’s Certificate (MEC), Form MCSA-5876
5
Federal Motor Carrier Safety Administration. How Do I Determine Which of the 4 Categories of Commercial Motor Vehicle Operation I Should Self-Certify
6
Drug and Alcohol Clearinghouse. Clearinghouse II and CDL Downgrades
7
eCFR. 49 CFR 383.111 – Required Knowledge
8
eCFR. 49 CFR 391.41 – Physical Qualifications for Drivers
9
eCFR. 49 CFR 383.25 – Commercial Learner’s Permit (CLP)
10
Federal Motor Carrier Safety Administration. Docket No. FMCSA-2023-0115 Amendments to the Commercial Driver’s License Requirements
11
eCFR. 49 CFR Part 380 Subpart F – Entry-Level Driver Training Requirements
12
Federal Motor Carrier Safety Administration. Entry-Level Driver Training (ELDT)
13
TSA Enrollment by Idemia. HAZMAT Endorsement (HME) Threat Assessment Program (HTAP)
14
eCFR. 49 CFR 383.51 – Disqualification of Drivers