Class D is for regular cars and light trucks

Class D is the standard license most people get when they first learn to drive. It covers passenger cars, pickup trucks under a certain weight, and small vans. The weight limit varies by state — some states cap it at 26,000 pounds, others at 10,000 pounds — so check your state's DMV website for the exact number.

Class D does not cover commercial work. If you drive a truck or van as part of a job, even if the vehicle itself is light enough, you may need a different class. The distinction is about how the vehicle is used, not just what it weighs.

Most states issue Class D licenses to drivers age 16 or 17 with restrictions (like no passengers under a certain age, or no driving between midnight and 5 a.m.), then remove those restrictions at age 18 or 21. The restrictions exist in your state's law, not on the license itself — the DMV will tell you what applies to you.

Key Takeaways

  • Class D covers passenger cars and light trucks for personal use, with weight limits that differ by state.
  • Class B covers larger trucks and buses that carry cargo or passengers, and requires a separate test and medical clearance.
  • Class A is for the largest trucks and combinations of vehicles, and is the hardest class to obtain.
  • Motorcycle licenses (usually Class M) are separate from car licenses and require their own test and training in most states.
  • Driving a vehicle heavier or more complex than your license allows is illegal and can result in fines or criminal charges.

Class B covers larger trucks and buses

Class B is for trucks heavier than Class D allows, and for buses that carry passengers. The threshold is usually 26,000 pounds or more, though this varies. You might need Class B if you drive a delivery truck, a dump truck, a school bus, or a transit bus.

Getting a Class B license is more involved than Class D. You must pass a written test specific to large vehicles, pass a skills test (driving test) in the actual vehicle, and pass a medical exam. The medical exam checks your vision, hearing, and ability to operate the vehicle safely — it is more thorough than the exam for Class D.

Some states require you to hold a Class D license for a set period before you can test for Class B. Others let you go straight to Class B if you are old enough. Age minimums are usually 18 or 21, depending on the state and whether you are driving intrastate (within your state) or interstate (across state lines).

Class A is for the largest truck combinations

Class A is for tractor-trailers, semi-trucks, and any combination of vehicles where the trailer weighs more than 10,000 pounds. It is the highest class of commercial license and the most restrictive to obtain.

To get Class A, you must already hold a Class B license in most states, or meet the same requirements as Class B and then pass additional tests. You will take a written test on combination vehicles, a skills test in a tractor-trailer, and a medical exam. Some states require you to complete a commercial driver training course before you can test.

Class A also comes with endorsements — additional qualifications for specific cargo or vehicle types. For example, a Hazmat endorsement means you can carry hazardous materials. Each endorsement requires its own written test and background check. You do not need every endorsement, only the ones that match the work you do.

Motorcycle licenses are separate from car licenses

Motorcycles require their own license class, usually called Class M or Class MC, depending on your state. You cannot legally ride a motorcycle on a Class D license, even if you hold one.

To get a motorcycle license, you must pass a written test on motorcycle-specific rules and safety, and pass a skills test on an actual motorcycle. Some states let you test on any motorcycle; others require a bike under a certain engine size (often 500cc or 650cc) for the test. The skills test usually includes a course in a parking lot where you demonstrate braking, turning, and obstacle avoidance.

Many states offer a motorcycle safety course that, if you complete it, waives or reduces the skills test requirement. These courses are run by the Motorcycle Safety Foundation or a state-approved provider and typically take one or two days. Taking the course is optional but can make the licensing process faster.

Endorsements add specific permissions to your license

An endorsement is a notation on your license that says you are trained to do something beyond what your base class allows. Common endorsements include Hazmat (hazardous materials), Passenger (for buses carrying people), Tank (for tanker trucks), and Doubles/Triples (for multiple trailers).

You do not automatically get endorsements when you get your license. You must test for each one separately. The written test covers the specific rules and safety procedures for that endorsement. Some endorsements also require a background check — Hazmat, for example, requires a Transportation Security Administration (TSA) background check that can take several weeks.

If your job requires an endorsement you do not have, you cannot legally do that work. Your employer cannot ask you to drive without the right endorsement, and you cannot be penalized for refusing to do so.

Restrictions limit who and what you can drive

A restriction is a condition on your license that limits how you can drive. Restrictions are different from classes — they do not change what vehicle you can drive, but they change when or how you can drive it.

Common restrictions include corrective lenses (you must wear glasses or contacts), automatic transmission only (you cannot drive a manual transmission vehicle), daylight driving only, or no interstate driving. Young drivers often have restrictions on passengers or driving hours. If you have a medical condition, the DMV may add a restriction related to that condition.

Restrictions appear as codes on your license. Your state's DMV handbook explains what each code means. If you violate a restriction — for example, driving at night when your license says daylight only — you can be cited, even if you are otherwise driving safely and legally.

Commercial licenses require more testing and medical clearance

Any license above Class D is considered a commercial driver license (CDL), even if you drive commercially only part-time. The testing and medical requirements are stricter because larger vehicles pose greater risk to other drivers.

The medical exam for a CDL is performed by a certified medical examiner and covers vision (at least 20/40 in each eye), hearing, blood pressure, diabetes control, and ability to operate the vehicle. If you fail the medical exam, you cannot get or renew a CDL. Some conditions — like certain heart problems or untreated sleep apnea — are disqualifying. Others can be managed with treatment or monitoring.

CDL holders must also follow stricter rules on hours of service (how long you can drive without rest), vehicle maintenance, and record-keeping. These rules exist in federal law, so they explore in every state. Violating them can result in fines, license suspension, or criminal charges.

Frequently Asked Questions

Can I drive a Class B truck with a Class D license?

No. Driving a vehicle heavier or more complex than your license class allows is illegal. You can be fined, your license can be suspended, and you may face criminal charges. Your insurance also will not cover an accident if you were driving without the proper license.

Do I need a motorcycle license if I only ride a small scooter?

It depends on your state and the scooter's engine size. Most states require a motorcycle license for any motorized two-wheeler over 50cc. Some states have a separate moped or scooter license for smaller vehicles. Check your state's DMV website for the exact threshold.

What happens if I fail the commercial driving test?

You can retake it, usually after waiting a set number of days (often 7 to 14 days). There is no limit to how many times you can test, but each attempt costs a fee. Some people take a commercial driving school course between attempts to improve their skills.

Can I get a Class A license without first getting a Class B?

Most states require you to hold a Class B license first, but a few allow you to test for Class A directly if you meet the age and medical requirements. Check your state's DMV website or call your local DMV office to find out what your state requires.

Do endorsements expire or need to be renewed?

Endorsements are tied to your license and renew when your license renews. You do not need to retake the endorsement test unless your license is suspended, revoked, or downgraded. If you let your license expire, you may need to retake endorsement tests when you renew.