A tow truck driver license is a commercial endorsement added to your regular driver's license

You cannot legally operate a tow truck without a commercial driver's license (CDL) with the appropriate endorsements. The specific endorsement you need depends on the weight of the vehicles you'll be towing and the type of towing work you do. Most tow truck operators need a Class B or Class A CDL, plus endorsements that show you can handle heavy loads and passenger vehicles safely.

The process involves passing written tests on towing laws and safety, a skills test with an actual tow truck, and a medical examination. Each state sets its own testing schedule and fees, so the timeline and cost vary by where you live. You'll also need to meet age requirements — most states require you to be at least 18 years old for intrastate towing and 21 for interstate work.

Key Takeaways

  • A CDL with towing endorsements is required by law to operate a tow truck, and the specific endorsement depends on the weight and type of vehicle you're towing.
  • You must pass a written knowledge test, a practical driving skills test, and a medical examination before you receive your endorsement.
  • Each state's Department of Motor Vehicles sets its own testing dates, fees, and specific requirements, so contact your state DMV directly for exact details.
  • Most states require you to be at least 21 years old to tow vehicles across state lines, though intrastate towing may allow 18-year-olds.
  • Your medical certification must be current and on file with your state before you can take the skills test.

Which CDL class and endorsements you need

The CDL class you need depends on the Gross Vehicle Weight Rating (GVWR) of the tow truck itself, not the weight of what you're towing. A Class B CDL covers single vehicles with a GVWR of 26,001 pounds or more. A Class A CDL covers any combination of vehicles where the towed unit has a GVWR of 10,001 pounds or more. Most heavy-duty tow trucks fall into the Class A category.

Beyond the class, you'll need specific endorsements. The T endorsement (or "Tractor" in some states) is the core towing endorsement and appears on your license as "T". Some states also require an S endorsement (Passenger) if you tow vehicles carrying passengers, or an X endorsement (Hazmat) if you handle hazardous materials. Check with your state's DMV to confirm which endorsements explore to the type of towing you plan to do.

The written knowledge test for towing

Before you sit for the skills test, you must pass a written exam on towing-specific rules and safety. This test covers topics like proper hitching procedures, weight distribution, brake systems on towed vehicles, and what to do if your tow rig starts to jackknife or sway. The test is usually 20 to 50 questions, depending on your state, and you typically need to score 80 percent or higher to pass.

Most states allow you to study using their official CDL manual, which includes a section on towing. You can read it free from your state DMV's website or pick up a printed copy at any DMV office. Some people also use third-party study guides or online practice tests, though the official manual is the most reliable source for what will actually appear on the exam.

The skills test with an actual tow truck

The practical skills test happens in a real tow truck and has three parts: a vehicle inspection, a backing and maneuvering test, and a road test. During the inspection, you'll show the examiner that you can identify working brakes, proper tire condition, find hitching equipment, and functioning lights on both the tow truck and the towed vehicle. This part tests whether you know what to check before you leave the lot.

The backing test requires you to back the tow truck and towed vehicle into tight spaces or around obstacles without hitting cones or curbs. The road test puts you on actual streets where the examiner watches how you handle acceleration, braking, turning, and lane changes with a heavy load behind you. The entire skills test usually takes 45 minutes to an hour. You must pass all three parts to receive your endorsement.

Medical certification requirements

You must pass a Department of Transportation (DOT) medical examination before you can take the skills test. A certified medical examiner — not your regular doctor — performs this exam and checks your vision, hearing, blood pressure, and overall fitness to operate a commercial vehicle. The exam costs between $50 and $150, depending on the examiner and your location.

Your medical certificate is valid for two years from the date of the exam. You must have a current certificate on file with your state DMV before you can even schedule the skills test. If your certificate expires, you'll need to take another exam and renew it before you can continue driving commercially. Some states allow you to renew your certificate up to 10 days before it expires.

Age requirements and other restrictions

Most states require you to be at least 18 years old to hold a CDL for intrastate towing — that is, towing within your state only. If you want to tow across state lines, you must be at least 21 years old. A few states have higher minimum ages, so check your state's specific rules on the DMV website.

You also cannot hold a CDL if you have certain medical conditions, a history of serious traffic violations, or an active suspension on your regular driver's license. If you've been convicted of a felony involving a commercial vehicle, or if you've been convicted of driving under the influence, you may be permanently barred from holding a CDL. Your state DMV can tell you whether any past violations or conditions will affect your ability to get a towing endorsement.

How to start the process in your state

Contact your state's Department of Motor Vehicles directly — either online, by phone, or in person — to get the exact steps, fees, and testing schedule for your area. Each state runs its own CDL program, so the order of steps and the cost can differ significantly. Some states let you schedule the written test and skills test on the same day; others require you to pass the written test first and wait before scheduling the skills test.

You'll need to bring your current driver's license, proof of citizenship or legal residency, your Social Security number, and proof of your medical certification. Some states also require proof of your address. Once you pass both the written and skills tests, the endorsement is added to your license, usually within a few days to a week. You can then legally operate a tow truck in your state.

Frequently Asked Questions

Do I need a CDL to operate a light-duty tow truck?

It depends on the GVWR of the tow truck itself. If the tow truck weighs 26,001 pounds or more, you need a CDL. Some smaller tow trucks used for roadside information fall below that threshold and don't require a CDL, but you should verify the GVWR of any truck you plan to operate with your state DMV.

How long does it take to get a towing endorsement?

The written test can usually be scheduled within days of your request. The skills test may have a longer wait depending on your state's testing capacity — anywhere from a few days to several weeks. Once you pass both tests, the endorsement is typically added to your license within a week.

Can I take the skills test in my own tow truck?

Most states allow you to use your own tow truck for the skills test, but it must be properly registered, insured, and in safe working condition. Some testing centers have their own vehicles available if you don't have access to one. Contact your state DMV to confirm what's allowed in your area.

What happens if I fail the skills test?

You can retake the skills test after a waiting period, which varies by state — usually between 7 and 14 days. You'll pay the testing fee again each time you retake it. There's no limit to how many times you can retake the test, but you must pass all three parts (inspection, backing, and road test) in a single session.

Do I need a towing endorsement if I only work for a tow truck company?

Yes. The endorsement is tied to your personal driver's license, not to your employer. You need it whether you own the tow truck, work for a company, or operate as an independent contractor. Your employer may require you to have the endorsement before you start work.