Getting your CDL requires passing a written knowledge test, a skills test, and a medical exam, then submitting your paperwork to your state's DMV

A Commercial Driver's License (CDL) is issued by your state's Department of Motor Vehicles and allows you to operate trucks, buses, or other large commercial vehicles. The process takes weeks to months depending on your state and how quickly you move through each step. You cannot skip steps or test out of the written exam — every applicant follows the same sequence.

The timeline typically runs like this: you study and pass the written test first, then schedule and pass a skills test with an examiner, then submit medical certification and other documents to your state DMV. Some states let you do the written test at a local DMV office; others require a third-party testing facility. The skills test almost always happens at a third-party location with an approved examiner, not at the DMV itself.

Key Takeaways

  • You must pass a written knowledge test covering vehicle operation, safety, and regulations specific to the type of vehicle you want to drive.
  • A third-party examiner will test your ability to perform pre-trip inspections, basic vehicle control, and on-road driving in an actual commercial vehicle.
  • You need a valid medical certificate from a certified medical examiner before you can be issued your CDL, and this certificate expires every two years.
  • Your state DMV will not issue the license until you submit proof of passing both tests, your medical certificate, and your current driver's license.
  • Costs vary by state but typically range from $100 to $300 total, not including the cost of training or vehicle rental for the skills test.

Step 1: Get Your Commercial Learner's Permit (CLP)

Before you can take the skills test, you must first obtain a Commercial Learner's Permit from your state DMV. This is a separate document that proves you passed the written knowledge test and are allowed to practice driving a commercial vehicle with a licensed CDL holder in the passenger seat.

To get your CLP, visit your state DMV office with your current driver's license, proof of residency, and Social Security number or ITIN. Pay the CLP fee (usually $20 to $50) and take the written test. The test covers general knowledge about vehicle operation, air brakes, combination vehicles, hazardous materials, and passenger safety — depending on which endorsements you need. You can study using your state's CDL manual, which is free and available on your state DMV website.

Most states let you retake the written test the same day if you fail, though some require you to wait 24 hours. Once you pass, you receive your CLP when ready or within a few days. This permit is valid for 180 days to one year depending on your state, so do not wait too long to schedule your skills test.

Step 2: Obtain Your Medical Certificate

You must have a valid medical certificate from a certified medical examiner before the DMV will issue your CDL. This is not optional and cannot be waived. The examiner checks your vision, hearing, blood pressure, and medical history to may support you are physically able to operate a commercial vehicle safely.

Find a certified medical examiner through the National Registry of Certified Medical Examiners on the Federal Motor Carrier Safety Administration (FMCSA) website. Call ahead to confirm they are accepting new patients and ask about their fee, which typically ranges from $75 to $150. Bring your current driver's license, proof of residency, and a list of any medications you take. The exam takes 30 to 45 minutes.

If you pass, the examiner gives you a copy of your medical certificate on the spot. The original goes to your state DMV when you submit your CDL paperwork. The certificate is valid for two years, so you will need to renew it before your CDL expires. If you fail the medical exam, you can appeal the decision or seek a second opinion from another certified examiner.

Step 3: Complete Training and Practice Driving

While you hold your CLP, you must practice driving a commercial vehicle with a licensed CDL holder in the passenger seat. This is a legal requirement in most states and is enforced during your skills test — examiners will ask about your practice hours. Many states require a minimum number of hours; some require 10 hours, others 50 or more.

You can practice with a mentor who already holds a CDL, or you can enroll in a CDL training school. Training schools provide classroom instruction, hands-on vehicle operation, and supervised practice. They typically cost $3,000 to $7,000 and take two to eight weeks depending on the program. Some employers sponsor training for drivers they plan to hire, so ask potential employers whether they offer this.

During practice, you will learn pre-trip inspection procedures, how to operate the vehicle's controls, backing and parking techniques, and how to handle different road and weather conditions. Your mentor or instructor will also teach you the specific rules and hazards related to your vehicle type — air brake operation for trucks, passenger safety procedures for buses, and so on.

Step 4: Schedule and Pass Your Skills Test

Once you have your CLP and have completed your practice hours, schedule your skills test with a third-party testing facility approved by your state. You cannot take this test at the DMV; your state contracts with private examiners or schools to administer it. Search your state DMV website for "approved CDL testing locations" or "third-party examiners" to find facilities near you.

The skills test has three parts: the pre-trip inspection, the basic vehicle control test, and the on-road driving test. In the pre-trip inspection, you walk around the vehicle and point out safety components — lights, tires, brakes, mirrors — and explain what you are checking and why. The examiner is testing your knowledge, not your ability to fix things.

In the basic vehicle control test, you perform maneuvers like backing in a straight line, backing into an offset alley, and parking between two cones. These happen in a closed course, not on public roads. In the on-road test, you drive the vehicle on public streets for 30 to 60 minutes while the examiner observes your steering, braking, lane changes, and response to traffic. You must bring your CLP, medical certificate, and a valid photo ID to the test.

If you fail any part of the skills test, you can retake it. Some states let you retake only the failed section; others require you to retake the entire test. Retesting fees vary by state and facility, typically $50 to $150 per attempt. Your CLP remains valid during retakes, so you can continue practicing and schedule another test.

Step 5: Submit Your Paperwork to the DMV

After you pass both the written test and the skills test, gather your documents and submit them to your state DMV office. You will need your current driver's license, your CLP, your medical certificate, proof of passing the skills test (the examiner provides this), and proof of residency. Some states also require a vision test at the DMV office, even though you already passed one during your medical exam.

Pay the CDL issuance fee, which varies by state and vehicle class but typically ranges from $50 to $200. The DMV will process your paperwork and issue your CDL within one to four weeks. Some states mail it to you; others let you pick it up at the office. Your CDL is valid for four to eight years depending on your state, and you must renew your medical certificate every two years even if your license has not expired.

Understanding CDL Classes and Endorsements

Your CDL will be issued in a specific class based on the vehicle you tested in and the weight of the vehicle. Class A covers combination vehicles (tractor-trailers) with a gross vehicle weight rating over 26,001 pounds. Class B covers single vehicles over 26,001 pounds, like straight trucks or buses. Class C covers vehicles under 26,001 pounds but carrying hazardous materials or 16 or more passengers.

You may also need endorsements, which are additional qualifications for specific cargo or vehicle types. The most common are the H endorsement (hazardous materials), the T endorsement (double and triple trailers), the P endorsement (passengers), and the S endorsement (school bus). Each endorsement requires passing an additional written test. You can take these tests at the same time as your general knowledge test or add them later.

Some endorsements also require a skills test. For example, if you want the P endorsement for passenger vehicles, you must take your skills test in a bus or passenger van, not a truck. Plan ahead if you need multiple endorsements, because scheduling can take time and you may need to rent different vehicles for testing.

Frequently Asked Questions

Can I use my regular driver's license to drive a commercial vehicle while I wait for my CDL?

No. Once you obtain your CLP, you can only drive a commercial vehicle if a licensed CDL holder is in the passenger seat. Driving alone is illegal and can result in fines and criminal charges. Your regular driver's license does not permit commercial driving under any circumstances.

What happens if I fail the skills test?

You can retake the test after paying the retesting fee, which is usually $50 to $150. Your CLP remains valid, so you can continue practicing with a mentor. Some states let you retake only the section you failed; others require the full test again. Check with your testing facility about their specific policy.

How long is my medical certificate valid?

Your medical certificate is valid for two years from the date the examiner issues it. You must renew it before it expires, even if your CDL has not expired yet. Driving with an expired medical certificate is illegal and can result in losing your CDL privileges.

Do I need to take the written test again if I already have a regular driver's license?

Yes. The CDL written test covers commercial vehicle operation, safety regulations, and cargo handling — topics not covered in the regular driver's license test. There is no exemption based on driving experience.

Can I get a CDL in one state and use it in another?

Yes. A CDL issued by any state is valid nationwide. However, if you move to a new state, you must eventually transfer your license to that state's DMV. Most states require you to transfer within 30 to 60 days of establishing residency.