The Class CM license is for driving motorcycles with sidecars or three-wheeled vehicles in Texas

A Class CM license authorizes you to operate a motorcycle that has a sidecar attached, or a three-wheeled motorcycle (sometimes called a trike or three-wheeler). This is a separate license class from the standard motorcycle license because sidecars and three-wheeled vehicles handle differently than two-wheeled bikes and require different safety knowledge.

If you own a motorcycle with a sidecar or a three-wheeled motorcycle and want to ride it legally on Texas roads, you need this endorsement on your driver's license. Without it, you cannot legally operate that vehicle, even if you hold a regular motorcycle license.

Key Takeaways

  • Class CM covers motorcycles with sidecars and three-wheeled motorcycles, which are treated as separate vehicles from standard two-wheeled bikes.
  • You must pass a written test and a riding skills test specific to sidecar or three-wheeled motorcycle operation to get this endorsement.
  • The written test covers sidecar and three-wheel handling, weight distribution, braking, and Texas traffic laws as they explore to these vehicles.
  • You can take the riding test on your own sidecar or three-wheeled motorcycle, or on one provided by an approved testing location.
  • Texas does not require a separate Class CM license if you only ride a standard two-wheeled motorcycle — you would need the Class M endorsement instead.

What vehicles require a Class CM license

The Class CM endorsement covers two types of vehicles: a motorcycle with a sidecar attached to the side, and a three-wheeled motorcycle. A sidecar is a separate passenger compartment bolted to the frame of a standard motorcycle. A three-wheeled motorcycle has three wheels arranged either with two in front and one in back, or one in front and two in back.

A standard two-wheeled motorcycle does not require Class CM — it requires a Class M endorsement instead. If you are unsure whether your vehicle qualifies, the Texas Department of Public Safety (DPS) defines it by the number of wheels and how they are arranged. If you have questions about a specific vehicle, you can contact your local DPS office before testing.

Written test requirements for Class CM

Before you take the riding test, you must pass a written knowledge test at a DPS office. The test covers how sidecars and three-wheeled motorcycles behave on the road, how to handle them safely, and Texas traffic laws. The test is typically 25 to 30 questions, and you must score at least 80 percent to pass.

The written test covers topics like weight distribution with a sidecar, how braking works differently on three-wheeled vehicles, turning and cornering techniques, and how wind and road conditions affect these vehicles. You can study using the Texas Motorcycle Operator Manual, which is available free on the DPS website. Some testing locations also offer practice tests online.

Riding skills test for Class CM

After you pass the written test, you schedule a riding skills test with an approved testing location. During this test, an examiner watches you operate your sidecar or three-wheeled motorcycle through a series of maneuvers in a controlled area. The test typically lasts 15 to 20 minutes and covers basic control, stopping, turning, and obstacle avoidance.

You can take the riding test on your own vehicle or on one provided by the testing location, depending on what is available in your area. If you use your own vehicle, it must be registered and insured, and you must bring proof of registration and insurance to the test. The vehicle must also pass a safety inspection — the examiner will check brakes, lights, tires, and mirrors before the test begins.

How to register for the Class CM test

To register for the written and riding tests, visit your local DPS office in person or check the DPS website for testing locations near you. You will need to bring your current driver's license, proof of residency (such as a utility bill or lease), and your Social Security number or an Individual Taxpayer Identification Number. Some offices allow you to schedule tests online; others require you to walk in.

The written test can usually be scheduled within a few days. The riding test may have a longer wait depending on how many examiners are available in your area — some locations have a wait of two to four weeks. Call ahead to ask about current wait times before you make the trip.

Cost and timeline

The written test and riding test each have separate fees set by the Texas DPS. As of the most recent update, the written test costs around $10 to $15, and the riding test costs around $30 to $35, though these amounts can vary by location and change over time. Contact your local DPS office for the exact current fees.

Once you pass both tests, the DPS will add the Class CM endorsement to your driver's license. This usually happens on the same day or within a few business days. You will receive your updated license in the mail within two to three weeks. Until then, you will receive a temporary paper license that shows the endorsement.

What happens if you fail the riding test

If you do not pass the riding test on your first attempt, you can retake it. Most testing locations allow you to schedule another test within a few days or weeks, depending on availability. You do not have to retake the written test — once you pass it, that score is valid for a set period (usually one year).

Common reasons riders fail the Class CM test include losing control during turns, not stopping smoothly, hitting cones or markers during maneuvers, or not demonstrating safe handling of the sidecar or three-wheel configuration. If you fail, the examiner will tell you which maneuvers need work. Many riders practice on their own vehicle between attempts or take a safety course to improve their skills.

Frequently Asked Questions

Can I ride a sidecar motorcycle with just a regular Class M license?

No. Texas law requires a Class CM endorsement specifically for sidecars and three-wheeled motorcycles. Riding without the proper endorsement is illegal, even if you have a Class M license for standard motorcycles. The endorsement is separate because these vehicles require different handling skills.

Do I need a Class CM if I only ride as a passenger in the sidecar?

No. Only the operator (driver) of the sidecar or three-wheeled motorcycle needs the Class CM endorsement. Passengers do not need any special license. However, passengers should wear a helmet and follow all safety rules.

How long does the Class CM endorsement last?

The Class CM endorsement is valid as long as your driver's license is valid. When you renew your driver's license, the endorsement renews with it. You do not have to retake the test unless the DPS requires you to do so for a specific reason.

What if I move to another state with my sidecar motorcycle?

Other states have their own motorcycle licensing rules. Some states recognize Texas endorsements; others require you to pass their own test. Contact the motor vehicle department in the state you are moving to for information about their requirements.

Can I take a motorcycle safety course instead of the riding test?

Some approved motorcycle safety courses may waive the riding test for standard Class M licenses, but rules for Class CM are more restrictive. Contact the DPS or your local testing location to ask whether any safety courses in your area are approved for Class CM waiver.