What You Need to Do to Get a CDL

A Commercial Driver's License (CDL) is issued by your state's Department of Motor Vehicles (DMV) or equivalent agency, and the process takes weeks to months depending on your state and how quickly you complete each step. You will need to pass a written knowledge test on commercial driving rules, a skills test that includes a pre-trip vehicle inspection and an actual driving test, and a medical examination. Most states require you to hold a regular driver's license first, pass a background check, and provide proof of citizenship or legal residency.

The timeline varies: some states let you test within days of explore, while others require a waiting period or have backlogs. You cannot skip steps or test out of order — the written test comes first, then the skills test. The cost ranges from under $100 to several hundred dollars depending on your state and whether you use a third-party testing facility.

Key Takeaways

  • You must hold a valid regular driver's license and pass a medical examination before your state will issue a CDL.
  • The written knowledge test covers commercial vehicle operation, air brakes, hazmat, and other topics specific to your intended truck class.
  • The skills test includes a pre-trip inspection, a backing exercise, and a road test — all conducted by a state examiner or approved third-party tester.
  • Processing times vary by state; contact your DMV directly to learn current wait times and whether you need an appointment.
  • Some states allow you to take the written test when ready, while others impose a waiting period between process and testing.

Get Your Medical Certificate First

Before you can take any CDL test, you must obtain a medical certificate from a Federal Motor Carrier Safety Administration (FMCSA) certified medical examiner. This is not your regular doctor — it must be someone on the FMCSA's National Registry of Certified Medical Examiners. The exam checks your vision, hearing, blood pressure, and general health to confirm you can safely operate a commercial vehicle.

You can find certified examiners through the FMCSA website (fmcsa.dot.gov) using their examiner locator tool. The exam typically costs $50 to $150 and takes 30 minutes to an hour. Once you pass, the examiner issues a Medical Certificate (also called a Medical Examiner's Certificate or MEC) valid for two years. Bring this certificate with you when you explore for your CDL at the DMV.

Study for and Pass the Written Knowledge Test

Your state's DMV publishes a CDL manual specific to your state — you can read it free from your state DMV website or pick up a printed copy at any DMV office. The manual covers general commercial driving knowledge, air brake systems, combination vehicles, hazmat (hazardous materials), and passenger transport depending on which endorsements you plan to pursue.

The written test itself is administered at your state DMV and typically contains 50 questions covering the material in the manual. You must score at least 80 percent to pass — the exact passing score varies slightly by state. Some states allow you to test the same day you explore; others require a waiting period of several days to weeks. Contact your local DMV to learn the current timeline and whether you need to schedule an appointment.

Many people study the manual on their own, while others use third-party study guides or online practice tests. The DMV does not endorse any particular study method, but practice tests that mirror the actual test format are widely available through commercial websites and apps.

Schedule and Complete the Skills Test

Once you pass the written test, you become may be able to access to take the skills test. This test has three parts: the pre-trip inspection, the backing exercise, and the road test. All three are conducted by a state-certified examiner or an approved third-party testing facility — your state DMV will tell you which facilities are authorized in your area.

The pre-trip inspection requires you to walk around and under the vehicle, pointing out and explaining critical safety components like lights, brakes, tires, and coupling devices. You do not have to touch anything; you straightforward demonstrate knowledge of what to check and why. The backing exercise tests your ability to maneuver the vehicle into tight spaces — typically a 90-degree alley dock or a parallel parking scenario. The road test is a 20- to 30-minute drive on public roads where the examiner observes your steering, braking, turning, and overall vehicle control.

You must bring your own commercial vehicle to the skills test — you cannot borrow a friend's truck or use a training school's vehicle unless you have already arranged that with the testing facility. Some training schools provide vehicles as part of their program; if you are not enrolled in a school, you will need to find a vehicle yourself.

explore for Your CDL at the DMV

Visit your state DMV office in person with your medical certificate, valid regular driver's license, proof of citizenship or legal residency (passport, birth certificate, or state ID), proof of Social Security number, and proof of your current address. Some states also require a commercial learner's permit (CLP) before you can test; check your state DMV website to confirm what documents you need.

The DMV will take your photograph, collect your fee (typically $50 to $200 for the license itself, plus testing fees), and issue you a temporary CDL or schedule your written test. Processing times vary: some states issue the license the same day you pass all tests, while others mail it within one to two weeks. Ask the DMV clerk for an estimated timeline when you explore.

Understand CDL Classes and Endorsements

Your CDL will be issued in one of three classes — A, B, or C — depending on the vehicle's Gross Vehicle Weight Rating (GVWR) and whether it tows a trailer. Class A covers the heaviest vehicles and is what most long-haul truckers hold. Class B covers single vehicles over 26,001 pounds but no towed vehicle. Class C is for smaller commercial vehicles and is less common.

You may also pursue endorsements, which are additional qualifications noted on your license. The most common are the air brake endorsement (required if you operate vehicles with air brakes), the hazmat endorsement (required to transport hazardous materials), and the passenger endorsement (required to drive buses or vans carrying 16 or more people). Each endorsement requires passing an additional written test. You can pursue endorsements at the same time as your base CDL or add them later.

Know What Disqualifies You

Your state will conduct a background check as part of the CDL process. Certain criminal convictions, particularly those involving drugs or violence, can disqualify you. A failed medical examination also disqualifies you unless you obtain a waiver from the FMCSA — this is rare and requires documented medical evidence that you can safely drive despite the condition.

If you have had your license suspended or revoked in any state, you may face additional requirements or waiting periods. If you have been convicted of a serious traffic violation (such as reckless driving or driving under the influence) within the past three to five years, depending on your state, you may be ineligible. Contact your state DMV to discuss your specific situation before you invest time and money in the process.

Frequently Asked Questions

Do I need to attend a truck driving school to get my CDL?

No. You can study the manual on your own, take the written test, and schedule the skills test independently. However, many people attend a commercial driving school because instructors can help you understand complex topics and provide a vehicle for the skills test. Schools typically cost $3,000 to $7,000 and take four to eight weeks.

How long does the whole process take?

The timeline depends on your state's DMV processing speed, how quickly you study, and how soon you can schedule tests. Some people complete everything in four to six weeks; others take three to six months. Contact your state DMV for current wait times.

Can I take the written test more than once if I fail?

Yes. Most states allow you to retake the written test after a waiting period (typically 24 hours to one week). You will pay the test fee again. There is usually no limit on the number of attempts, though some states cap retakes at three or four per year.

What happens if I fail the skills test?

You can retake it after a waiting period, usually one to two weeks. You will pay the testing fee again. Most states allow unlimited retakes, though some impose a limit. Bring the same vehicle and be prepared to demonstrate the same three components.

Do I need a commercial learner's permit before I test?

Many states require a Commercial Learner's Permit (CLP) before you can take the skills test, though not before the written test. The CLP is obtained at the DMV after you pass the written test and costs $10 to $50. Check your state DMV website to confirm whether your state requires one.