Class B CDL: Rules, Requirements & What You Need to Know
What Is a Class B CDL?
Under federal standards set by the U.S. Department of Transportation and the Federal Motor Carrier Safety Administration (FMCSA), a Class B CDL authorizes you to operate any single heavy vehicle with a Gross Vehicle Weight Rating (GVWR) exceeding 26,000 pounds. Class B holders may also tow a trailer as long as it does not exceed 10,000 pounds GVWR — that's the key legal line that separates Class B from Class A. For local hauling, municipal work, and public transit, a Class B CDL offers a lower barrier to entry with strong, steady job demand nationwide.
Class A vs. Class B CDL: What's the Difference?
Understanding which license covers which vehicles is critical before you apply. Here's a side-by-side comparison:
| Vehicle Type | Class A | Class B |
|---|---|---|
| Tractor-Trailers / Semi-Trucks (18-wheelers) | ✔ Allowed | ✖ Not Allowed |
| Straight Heavy Dump Trucks | ✔ Allowed | ✔ Allowed |
| Full-Size School Buses | ✔ Allowed (endorsement required) | ✔ Allowed (endorsement required) |
| Towing a Trailer / Combination Over 10,000 lbs. | ✔ Allowed | ✖ Not Allowed |
What Jobs Can You Get with a Class B CDL?
A Class B CDL opens the door to a wide range of stable, well-paying commercial driving jobs across the U.S.:
Class B CDL Salary: What Can You Expect to Earn?
Based on data from major job platforms and trucking industry associations, here's a general salary reference by driving specialty:
| Job Type | Estimated Annual Salary (U.S.) |
|---|---|
| Public / Private School Bus Driver | $40,000 – $70,000 |
| Transit Bus / Shuttle Driver | $50,000 – $90,000 |
| Sanitation / Garbage Truck Driver | $60,000 – $100,000 |
| Dump Truck / Heavy Construction Driver | $60,000 – $120,000 |
Don't Get Stuck with the Air Brake Restriction (Restriction L)
One of the most common mistakes first-time CDL applicants make is skipping the Air Brakes practice test. Under FMCSA rules, if you fail the Air Brakes knowledge test — or if you take your CDL skills test in a vehicle equipped with hydraulic brakes instead of air brakes — your license will automatically be issued with an L restriction (No Air Brakes). That means you'll be legally prohibited from driving most heavy dump trucks, transit buses, or box trucks equipped with air brake systems. To stay competitive in the job market and keep your CDL fully unrestricted, we strongly recommend working through our free Air Brakes practice test before your permit test appointment.
Class B CDL — Frequently Asked Questions
Q: Is the Class B CDL hard to get?
A: Compared to Class A — which requires mastering backing techniques with a 53-foot trailer — Class B vehicles are shorter and have no articulation point, making both the written knowledge test and the driving skills test significantly more approachable. Most candidates find Class B has a higher pass rate overall.
Q: How long does it take to get a Class B CDL?
A: After you pass the knowledge tests and receive your Commercial Learner's Permit (CLP), completing a certified CDL training program and passing your skills test typically takes 3 to 6 weeks for most students.
Q: Do I need to attend a CDL school?
A: Yes. Under the federal Entry-Level Driver Training (ELDT) regulations now in effect nationwide, all new CDL applicants must complete theory and behind-the-wheel training at an FMCSA-registered training provider before scheduling their skills test.
Q: Should I get a Class A or Class B CDL?
A: If you're chasing long-haul interstate routes and top-tier pay, Class A has a higher earning ceiling. But if you want to be home every night, focus on local city delivery, or drive transit or school buses, Class B is usually the smarter, faster path to steady employment.
Q: Can I drive a school bus with a Class B CDL?
A: Yes — but in addition to your base Class B CDL, you must pass both the Passenger (P) endorsement and the School Bus (S) endorsement knowledge and skills tests. You'll also need to clear a state criminal background check and child safety screening.