What a Class B License Covers and Who Needs One
A Class B license lets you drive single vehicles weighing more than 26,001 pounds — typically large trucks, buses, and some RVs — but without the air brake and hazmat restrictions that come with a Class A. The exact weight threshold and what vehicles fall into Class B varies by state, so you'll need to check your state's Department of Motor Vehicles (DMV) website for the precise definition.
You need a Class B if your job involves driving a delivery truck, a city bus, a dump truck, or a large box truck. If you're buying an RV that weighs over the threshold, you'll also need one. Most people get a Class B because their employer requires it for the job they've been hired to do.
The process takes longer than a standard driver's license because you must pass a written knowledge test, a skills test behind the wheel, and a medical examination. Most states require you to hold a valid regular driver's license first, though a few allow you to test directly into a Class B if you have no prior license.
Key Takeaways
- You must hold a valid regular driver's license before you can get a Class B in most states, though some states allow direct testing.
- The written test covers vehicle operation, safety rules, and weight-related handling specific to large trucks and buses.
- The behind-the-wheel test includes backing up, turning in tight spaces, and stopping from highway speed — skills that differ from regular driving.
- A medical examination by a certified examiner is required in all states and must be passed before you can take the skills test.
- The entire process typically takes two to eight weeks depending on how quickly you schedule tests and how many attempts you need.
Step 1: Get Your Regular Driver's License (If You Don't Have One)
Most states require you to hold a valid Class C or standard driver's license before you can test for a Class B. If you already have one, skip to Step 2. If you don't, you'll need to pass the written test and behind-the-wheel test for a regular license first, which can take several weeks on its own.
Some states — including a few in the Midwest and South — allow you to test directly into a Class B without holding a regular license first. Check your state's DMV website to see if this applies to you. If it does, you can move straight to the medical exam and written test, but you'll still need to pass the same skills test.
Step 2: Schedule and Pass a Medical Examination
Before you can take the written or skills test for a Class B, you must pass a medical examination by a certified medical examiner approved by your state's DMV. This is not your regular doctor — it's a specific examiner trained to assess whether you're physically fit to operate a large commercial vehicle. Your state's DMV website lists approved examiners in your area, or your employer may direct you to one.
The exam checks your vision, hearing, blood pressure, and ability to operate the vehicle's controls. You'll also be asked about any medications you take and any medical conditions that might affect your driving. The exam usually takes 20 to 30 minutes and costs between $50 and $150, depending on your state and the examiner.
Once you pass, the examiner gives you a medical certificate that's valid for two years. You'll need this certificate when you show up to take your written and skills tests — without it, the DMV won't let you test.
Step 3: Study and Pass the Written Knowledge Test
The written test covers the rules of the road, vehicle handling for large trucks and buses, and safety procedures specific to Class B vehicles. Most states give you 50 to 100 questions, and you typically need to score 80 percent or higher to pass. The test usually takes 30 to 45 minutes.
Your state's DMV provides a free study guide — usually called the Commercial Driver's License (CDL) manual or Class B manual — available on their website or in print at any DMV office. Read through it carefully, because the test includes questions about weight distribution, braking distance, and how to handle skids that don't appear on regular driver's license tests.
You can take the written test at your local DMV office. Schedule an appointment through your state's DMV website or by calling. Most states let you retake the test if you fail, though you may have to wait a few days and pay a retest fee of $10 to $30.
Step 4: Schedule and Pass the Behind-the-Wheel Skills Test
After you pass the written test, you're ready to schedule the skills test. This is a driving test in an actual Class B vehicle — usually a truck or bus provided by the DMV or a testing center. The test typically lasts 30 to 45 minutes and includes three parts: a pre-trip inspection, basic control skills, and road driving.
During the pre-trip inspection, the examiner asks you to walk around the vehicle and point out safety features — mirrors, lights, brakes, tires, and emergency equipment. You don't have to fix anything, just show you know where these items are and why they matter.
The basic control skills portion happens in a closed course or parking lot. You'll back up in a straight line, back up into a tight space, turn sharply without hitting cones, and stop smoothly from a low speed. These maneuvers test whether you can handle the vehicle's size and weight.
The road portion involves driving on city streets and highways at normal speeds. The examiner watches how you handle turns, lane changes, stopping, and acceleration. You must follow all traffic laws and show smooth, safe control of the vehicle.
If you don't pass, you can retake the skills test after a waiting period — usually three to seven days — and pay another test fee. Many people pass on the second or third attempt, so don't be discouraged by a first failure.
What Happens After You Pass All Tests
Once you pass the written and skills tests, the DMV issues your Class B license. In most states, this happens the same day or within a few business days. Your new license will show the Class B designation and any restrictions — for example, some states restrict Class B holders from driving certain types of vehicles or require them to wear corrective lenses.
Your Class B license is valid for four to eight years depending on your state, and you'll need to renew it by passing another medical exam and written test when it expires. Some states allow you to renew by mail or online if you haven't had any violations, but others require you to test again in person.
Common Reasons People Fail and How to Avoid Them
The most common reason people fail the skills test is poor backing control — the vehicle is wider and longer than a regular car, and backing up in a straight line or into a tight space takes practice. If you have access to the vehicle before your test, spend time practicing these maneuvers in an empty parking lot.
The second common failure is not completing the pre-trip inspection correctly. Examiners expect you to know where safety equipment is located and why it matters. Spend time with the actual vehicle you'll be tested in, if possible, and memorize the location of mirrors, lights, emergency exits, and fire extinguishers.
On the written test, people often miss questions about braking distance and weight distribution because these topics don't explore to regular driving. Read the study guide twice and pay special attention to sections labeled "air brakes," "weight," or "stopping distance."
Frequently Asked Questions
Can I get a Class B license if I have a suspended or revoked regular license?
No. Your regular driver's license must be valid and in good standing. If it's suspended or revoked, you'll need to complete the reinstatement process first, which varies by state and the reason for suspension.
Do I need to take a Class B test if my employer provides the vehicle and training?
Yes. Employer training and vehicle access help you prepare, but you still must pass the written and skills tests at your state's DMV. No private training program can substitute for the official test.
How much does it cost to get a Class B license?
Costs vary by state but typically include a medical exam ($50–$150), written test fee ($10–$50), skills test fee ($50–$150), and license issuance fee ($20–$100). Total cost is usually between $150 and $450. Some employers cover these costs for new hires.
What if I fail the skills test twice?
You can retake it as many times as needed. Most states don't limit the number of attempts, though each retake requires another test fee and a waiting period. Some people take a professional CDL training course after failing twice to get structured practice.
Can I drive a Class B vehicle with a regular license while I'm studying for the test?
No. Driving a Class B vehicle without the proper license is illegal and can result in fines, license suspension, or criminal charges. You must have the Class B license before you operate the vehicle on public roads, even if you're a trainee.