What You Need to Do to Get a Class A CDL

A Class A Commercial Driver's License (CDL) lets you drive the largest trucks on the road — tractor-trailers, doubles, and triples. To get one, you follow three stages: pass a written knowledge test, pass a skills test in an actual truck, and meet your state's medical and background requirements. Most states require you to hold a regular driver's license first, pass a Department of Transportation (DOT) medical exam, and be at least 18 years old (21 if you want to drive across state lines).

The entire process typically takes four to eight weeks from start to finish, though the timeline depends on how quickly you schedule your tests and whether you need training first. You do not have to attend a truck driving school — you can study on your own and test through your state's DMV — but most people find formal training helpful because the skills test is difficult to pass without practice in an actual commercial truck.

Key Takeaways

  • You must hold a valid regular driver's license, pass a DOT medical exam, and pass a written knowledge test before you can take the skills test.
  • The skills test happens in a real Class A truck and covers pre-trip inspection, basic control, and on-road driving — you cannot pass it without hands-on practice.
  • Most states let you study for the written test on your own using the CDL manual, but formal truck driving school (typically 3 to 7 weeks) increases your chances of passing the skills test.
  • Your state's DMV sets the test schedule and fees, which vary by state but usually range from $50 to $200 for the written test and $100 to $300 for the skills test.
  • Once you pass both tests, your state issues your Class A CDL, which is valid for four to eight years depending on your state.

Get Your Regular Driver's License and Medical Clearance First

Before you can even schedule a CDL test, you need a valid regular driver's license (Class D or equivalent in your state). If you do not have one, get that first through your state's DMV — the CDL cannot replace it. You also need to pass a DOT medical examination with a certified medical examiner. This is not your regular doctor visit; it is a specific exam that checks your vision, hearing, blood pressure, and ability to operate a commercial vehicle safely. The examiner fills out a Medical Examination Report (Form MCSA-5875), and you keep a copy to show when you register for your CDL tests.

The medical exam costs between $50 and $200 depending on your provider. You can find DOT-certified examiners through your state's DMV website or by searching the National Registry of Certified Medical Examiners. Once you pass, your medical clearance is valid for two years, so you have that window to complete your CDL tests.

Study for and Pass the Written Knowledge Test

Your state's DMV publishes a free CDL Manual (also called the Commercial Driver's License Handbook) that covers everything on the written test. The manual is available online on your state's DMV website and covers general knowledge, air brakes, combination vehicles, hazardous materials, and other topics depending on what endorsements you want. You study this material on your own time, then schedule your written test through your state's DMV.

The written test is multiple choice, usually 50 questions, and you need to score around 80 percent to pass (this varies slightly by state). You take it at a DMV office or testing center, and results come back the same day. If you pass, you get a permit that lets you practice driving a commercial truck with a licensed CDL holder in the passenger seat. If you fail, you can retake it after a waiting period (usually a few days to a week, depending on your state).

Get Behind-the-Wheel Training or Practice

After you pass the written test, you need hands-on experience in a Class A truck before you can pass the skills test. This is where most people choose formal training. A truck driving school typically runs 3 to 7 weeks and costs $3,000 to $8,000. The school provides the truck for your skills test, which is a major advantage because the examiner will be familiar with that specific vehicle and the school's testing location. Schools also teach you the exact format of the skills test, which matters because the test has three parts and you have to pass all three.

If you choose not to attend school, you can practice with someone who already holds a Class A CDL — usually a friend or family member with a truck. However, you will still need to arrange a truck and examiner for your skills test, which is more complicated. Most independent test takers rent a truck from a local trucking company or school for the day of the test, which costs $200 to $500.

Schedule and Pass the Skills Test

The skills test has three sections: pre-trip inspection, basic control, and on-road driving. In the pre-trip section, you walk around the truck and point out safety features and maintenance items while the examiner watches and asks questions. In the basic control section, you perform maneuvers like backing up, turning, and parking in a closed course. In the on-road section, you drive the truck on public roads for 30 to 45 minutes while the examiner watches and scores your performance.

You schedule the skills test through your state's DMV, usually by phone or online. Wait times vary — some states have openings within a week, others have a several-week backlog. The test costs $100 to $300 depending on your state. You must bring your medical clearance, your CDL permit (from passing the written test), and a valid regular driver's license. If you fail any section, you can retake the entire test after a waiting period, usually 14 days.

Receive Your Class A CDL

Once you pass all three sections of the skills test, your state's DMV issues your Class A CDL. This happens either when ready (some states print it on the spot) or within a few weeks (other states mail it). Your CDL is valid for four to eight years depending on your state, and you renew it by passing another medical exam and paying a renewal fee.

Your CDL comes with a base license that lets you drive any Class A truck. You can also add endorsements — special qualifications for hazardous materials (HazMat), passenger transport, or double/triple trailers — by passing additional written tests. Many employers require certain endorsements, so check job postings in your area to see which ones are in demand.

Frequently Asked Questions

Do I have to go to truck driving school, or can I just study on my own?

You can study the written test on your own using your state's CDL manual, but the skills test is much harder without formal training. Schools provide the truck, teach you the exact test format, and let you practice the maneuvers repeatedly. Most people who skip school and try to practice independently still end up paying for school or renting a truck anyway, so the upfront cost usually evens out.

How long does the whole process take?

If you already have your regular license and medical clearance, you can pass the written test in a few weeks of self-study. Formal truck driving school takes 3 to 7 weeks. Skills test wait times vary by state from one week to several weeks. Total time is usually 4 to 8 weeks, but can be longer if your state has a backlog.

What if I fail the skills test?

You can retake it after a waiting period, usually 14 days. Most states let you retake it as many times as you need. You pay the test fee each time. If you failed because of lack of practice, consider getting more training before your next attempt.

Can I drive a commercial truck with just my CDL permit?

Yes, but only with a licensed CDL holder in the passenger seat. You cannot drive alone for work or for-hire until you pass the skills test and receive your actual CDL.

What happens if my medical clearance expires before I finish my tests?

Your medical clearance is valid for two years. If it expires before you pass your skills test, you need a new medical exam. Schedule your skills test before your medical clearance runs out to avoid this delay.