How to Get a Class B Driver's License

What a Class B License Covers and Who Needs One

A Class B driver's license lets you drive single vehicles with a gross vehicle weight rating (GVWR) between 10,001 and 26,000 pounds — typically delivery trucks, small box trucks, and some RVs. You do not need a Class B to drive a regular car or pickup truck under 10,000 pounds; that is a Class C license. The Class B sits between the everyday Class C and the Class A (which covers tractor-trailers and heavier combinations).

Most states require a Class B if you drive a commercial vehicle in that weight range for work, even if you own the vehicle yourself. Some states also issue Class B for non-commercial use — for example, if you want to tow a large trailer or drive a heavy motorhome. The rules vary by state, so check your state's DMV website to confirm whether your vehicle actually requires a Class B or whether a Class C with an endorsement would work instead.

Key Takeaways

A Class B license covers vehicles weighing 10,001 to 26,000 pounds GVWR, and most states require it for commercial use of those vehicles.
You must pass a written knowledge test, a skills test (driving exam), and a medical examination in most states before you can hold a Class B.
The written test covers vehicle operation, safety, and weight-related rules; the skills test is performed in an actual vehicle of the correct weight class.
Fees, medical requirements, and testing procedures differ by state — contact your DMV before you start the process to confirm what documents and exams you need.
Some states allow you to take the written test before scheduling the skills test; others require you to pass the written test first and then book the driving exam weeks later.

Age Requirements and Minimum Qualifications

Most states set the minimum age for a Class B license at 18 years old, though a few require 21. You must hold a valid Class C (regular) driver's license before you can obtain a Class B in nearly every state. Some states allow you to hold both licenses simultaneously; others require you to surrender your Class C when you receive the Class B (though you can usually get it back if you downgrade later).

You must also have a clean driving record or meet your state's standards for violations and suspensions. A suspended or revoked license disqualifies you. If you have had a DUI, reckless driving conviction, or multiple moving violations within a certain period (usually three to five years), your state may deny your Class B process or require you to wait until the violations age off your record.

Medical Examination and DOT Certification

Most states require a Department of Transportation (DOT) medical examination before you can obtain or renew a Class B license, especially if the vehicle is used commercially. This exam is not the same as a regular physical; it focuses on vision, hearing, blood pressure, and conditions that could affect your ability to operate a heavy vehicle safely. You must see a DOT-certified medical examiner — your regular doctor usually cannot perform this exam.

The medical examiner will check your eyesight (you typically need at least 20/40 in each eye, corrected or uncorrected), hearing, blood pressure, and medical history. If you take certain medications or have conditions like diabetes, sleep apnea, or heart disease, you may still pass, but the examiner will document it. Some conditions result in a temporary certification (one or two years) rather than a full five-year certification. If you fail the medical exam, you cannot proceed with your Class B process until you address the issue and pass a retest.

The cost of a DOT medical exam varies by provider and state, typically ranging from $75 to $200. You pay the medical examiner directly, not the DMV. Keep your medical certificate — you will need to show it when you take your written and skills tests.

Written Knowledge Test Requirements

The Class B written test covers vehicle operation, safety rules, and regulations specific to heavier vehicles. Topics include braking systems, load securement, tire and wheel safety, vehicle inspection procedures, and how weight affects stopping distance and handling. The test is usually 50 to 100 questions, and you must score at least 80 percent to pass (rules vary by state).

Most states allow you to study using the official DMV manual for your state, which is free and available online or in print at your local DMV office. Some states offer practice tests on their DMV website. You take the written test at your local DMV office or an approved testing location. You do not need to bring your own vehicle; the test is computer-based or paper-based in an office setting.

After you pass the written test, you will receive a permit or a notice of passage. You must then schedule your skills test (driving exam). Some states allow you to schedule when ready; others require a waiting period of a few days to a few weeks. Check your state's rules before you take the written test so you know when you can book the driving exam.

Skills Test (Driving Exam) Procedures

The Class B skills test is a behind-the-wheel driving exam performed in an actual vehicle that meets the weight and size requirements for a Class B license. You cannot use a regular car or light truck; the examiner will verify that your vehicle is within the correct GVWR range. The test typically lasts 30 to 60 minutes and includes basic vehicle control (starting, stopping, turning, backing), lane changes, parking, and sometimes a brief highway drive.

You must bring your valid Class C license, your medical certificate, proof of vehicle registration and insurance, and any other documents your state requires. The examiner will also conduct a pre-drive vehicle inspection, checking lights, brakes, mirrors, wipers, and horn. If the vehicle fails inspection, you cannot take the test that day.

You must pass the skills test on your first attempt or schedule a retest. Retest fees and waiting periods vary by state. Some states charge an additional fee for each retest; others include one or two retests in the original fee. After you pass, you will receive a temporary license or a notice to pick up your Class B license at the DMV office within a set timeframe (usually 10 to 30 days).

Fees and Timeline by State

Class B license fees, test costs, and processing times vary significantly by state. Written test fees typically range from $10 to $50, and skills test fees range from $25 to $100. Medical exam costs are separate and paid to the examiner. License issuance fees (the cost of the actual license document) range from $20 to $100 depending on the state and license validity period.

The total timeline from start to finish usually takes four to twelve weeks. This includes time to study for the written test (one to four weeks), scheduling and passing the written test (one to two weeks), waiting for the skills test appointment (one to six weeks depending on DMV workload), and then processing the license after you pass (one to three weeks). If you fail either test, add time for studying and retesting.

Contact your state DMV directly or visit their website to confirm current fees, required documents, and average wait times for skills test appointments in your area. DMV offices in rural areas often have shorter wait times than urban offices.

Documents You Must Bring to the DMV

Bring the following documents when you explore for a Class B license:

Valid Class C driver's license (or equivalent).
DOT medical certificate (original, not a copy).
Proof of identity (passport, birth certificate, or state ID).
Proof of Social Security number (Social Security card, tax return, or W-2).
Proof of residency (utility bill, lease, or mortgage statement dated within the last 30 to 60 days).
Vehicle registration and proof of insurance for the vehicle you will use for the skills test.
Completed process form (available at the DMV or online).

Some states also require a vision test at the DMV office, even though you had one during the medical exam. Bring your glasses or contacts if you use them. If any document is missing or expired, the DMV will not process your process, so verify the list with your state's DMV before you go.

Common Mistakes and How to Avoid Them

The most common mistake is scheduling the skills test before you have your medical certificate. You cannot take the driving exam without it, and getting the medical exam can take one to three weeks if the examiner is busy. Schedule your medical exam first, then schedule the written test, then schedule the skills test.

Another frequent error is bringing the wrong vehicle to the skills test. The vehicle must be within the Class B weight range (10,001 to 26,000 pounds GVWR). If you show up with a vehicle that is too light or too heavy, the examiner will not test you, and you will lose your test fee and have to reschedule. Check your vehicle's registration or door jamb label to confirm the GVWR before the test date.

A third mistake is not studying the Class B manual thoroughly. The written test includes questions about load securement, braking systems, and weight-related safety that do not appear on the Class C test. straightforward relying on your Class C knowledge will likely result in a failing score. Set aside at least one to two weeks to study the Class B manual.

Frequently Asked Questions

Can I take the Class B written test without a medical certificate?

Most states require the medical certificate before you take any Class B test. A few states allow you to take the written test first and then provide the medical certificate before the skills test. Contact your DMV to confirm the order for your state.

What if I fail the skills test?

You can retake the skills test after a waiting period (usually one to two weeks). You must pay the retest fee, which is typically the same as the original test fee. You do not need to retake the written test unless your state's rules specify otherwise.

Do I need a Class B license if I drive a truck under 10,000 pounds for work?

No. Vehicles under 10,000 pounds GVWR can be driven with a regular Class C license. Check your vehicle's registration or door jamb to confirm the GVWR. If it is under 10,001 pounds, a Class C is sufficient.

How long is a Class B license valid?

Most states issue Class B licenses valid for four to eight years, depending on your age and the state. Check your license document for the expiration date. You will need to renew before that date if you want to continue driving a Class B vehicle.

Can I get a Class B license if I have had a DUI?

It depends on how long ago the DUI occurred and your state's rules. Most states have a waiting period (typically three to five years) before you can obtain a commercial license after a DUI conviction. Some states may deny the license entirely. Contact your state DMV to learn whether you are currently disqualified.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.