What a towing endorsement is and why you need it

A towing endorsement is an addition to your Class B commercial driver's license that permits you to operate tow trucks and recovery vehicles. Without it, you cannot legally tow vehicles for compensation, even if you hold a valid CDL. The endorsement signals to regulators and insurers that you have demonstrated knowledge of the specific hazards, equipment, and procedures involved in towing operations.

Most states require the endorsement before you can work for a towing company or operate your own towing business. Some states call it a "T" endorsement; others use different designations. The requirement exists because towing involves unique risks — jackknifing, load shifts, improper weight distribution, and interaction with traffic on roadways — that differ from standard commercial driving.

Key Takeaways

  • You must hold a valid Class B CDL before you can add a towing endorsement; the endorsement cannot stand alone.
  • Most states require you to pass a written knowledge test specific to towing operations, vehicle recovery, and safety procedures.
  • Some states also require a skills test (backing, coupling, or uncoupling a trailer) as part of the endorsement process.
  • The cost and processing time vary by state, but expect to pay between $10 and $50 and wait one to four weeks for approval.
  • You will need to provide proof of your current CDL, pass a background check, and sometimes show proof of insurance or employment with a towing company.

Prerequisites before you can add the endorsement

You must already hold a valid Class B commercial driver's license. If you do not yet have a CDL, you will need to obtain one first through your state's Department of Motor Vehicles or equivalent agency. That process involves passing a general knowledge test, a Class B air brakes test (if applicable), and a skills test in a commercial vehicle.

Your CDL must be valid and in good standing — no suspensions, revocations, or disqualifications. If your license has been suspended or you have had violations, you may need to resolve those before adding an endorsement. Some states also require you to be at least 18 years old (or 21 for interstate towing), though age requirements vary.

The written knowledge test for towing

Nearly all states require you to pass a written test covering towing-specific topics. The test typically covers safe towing practices, load securement, vehicle coupling and uncoupling, weight distribution, brake systems on towed vehicles, and emergency procedures. Questions often focus on preventing jackknife, rollover, and load-shift incidents.

Study materials are usually available through your state's DMV website or handbook. Many states provide a free towing endorsement study guide that outlines the topics and sample questions. You can also purchase third-party study guides or take practice tests online. The test itself is usually administered at your local DMV office and takes 30 to 60 minutes. Most states require a score of 80 percent or higher to pass.

Skills testing and vehicle requirements

Some states require a practical skills test in addition to the written exam. This test typically involves coupling and uncoupling a trailer, backing up with a trailer attached, or performing a pre-trip inspection of a tow truck and trailer. You will need access to an actual tow truck and trailer that meet your state's specifications — the vehicle must be properly equipped and registered.

If your state requires skills testing, you can usually schedule it at a DMV testing facility or through an approved third-party tester. You will need to bring the tow truck and trailer to the test location. Some states allow you to use a vehicle from your employer's fleet if you are already hired by a towing company. If you do not have access to a vehicle, some driving schools or towing companies offer rental or use of their equipment for the test.

Documents and information you will need to bring

Prepare your current CDL, a valid form of identification, and your Social Security number. You will also need to complete an process form specific to the towing endorsement — this is usually available at your DMV office or online. Some states require proof of employment with a towing company or proof of intent to work in the towing industry, though not all do.

A few states ask for proof of insurance or a letter from an employer stating that you will be operating tow trucks. Check your state's specific requirements before you visit the DMV, as missing documents can delay processing. You may also need to provide your address, phone number, and email for the process.

Cost and processing timeline

The fee for adding a towing endorsement ranges from $10 to $50 depending on your state. Some states charge a flat fee; others charge based on the length of the endorsement validity period. A few states include the endorsement fee in a broader CDL renewal or modification fee.

Processing time typically ranges from one to four weeks after you pass the written test and submit your process. Some states issue the endorsement when ready after you pass the test if you explore in person at the DMV. Others mail the updated license to you. If you need the endorsement urgently, contact your state's DMV to ask whether expedited processing is available and what it costs.

Renewal and validity periods

A towing endorsement is valid for the same period as your CDL — usually four to eight years depending on your state. When your CDL expires, the endorsement expires with it. You will need to renew both together by passing the towing knowledge test again and paying the renewal fee.

Some states allow you to renew by mail or online if you have no violations or medical issues. Others require you to appear in person. A few states waive the knowledge test on renewal if you have held the endorsement without incident. Check your state's renewal rules when your CDL expiration date approaches, as missing the important date can result in a lapsed endorsement and loss of the right to tow.

Frequently Asked Questions

Do I need a towing endorsement if I only tow my own vehicle?

No. The endorsement is required only if you tow vehicles for compensation — that is, as part of a business or for payment. If you tow your own personal vehicle or a friend's vehicle without payment, you do not need the endorsement. However, if you operate a towing service or accept payment for towing, the endorsement is mandatory in most states.

Can I get a towing endorsement on a Class C license?

No. A towing endorsement can only be added to a Class B commercial driver's license. If you hold only a Class C (passenger) license, you will need to upgrade to a Class B CDL first, which requires passing the CDL knowledge and skills tests. Once you have the Class B, you can then add the towing endorsement.

What happens if I tow without an endorsement?

Operating a tow truck without the required endorsement is illegal and can result in fines, license suspension, or both. Your employer can also face penalties. Insurance may not cover incidents that occur while you are operating without the proper endorsement, leaving you personally liable for damages or injuries.

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

Yes. Most states allow you to retake the written test if you do not pass on your first attempt. You typically must wait a set period — often 24 hours to one week — before retesting. Each retake usually requires you to pay the test fee again. Check your state's specific retesting policy at your local DMV.

Do I need to be employed by a towing company before I get the endorsement?

Not in most states. You can obtain the endorsement before you are hired, though some states ask you to show proof of employment or intent to work in the industry. A few states require you to be employed at the time of process. Contact your state's DMV to confirm whether employment is a requirement or straightforward helpful for processing.