Class B CDL Practice Test
Any single vehicle with a gross vehicle weight rating of 26,001 pounds or more, or one towing a unit not heavier than 10,000 pounds. Straight trucks, large buses, dump trucks with small trailers.
The tests a Class B licence needs
- General Knowledge — 50 questions · 80% to pass
- Air Brakes — 25 questions · 80% to pass
Air brakes is conditional: you only take it if the vehicle you test in has air brakes. Skipping it puts an L restriction on your licence, which bars you from most commercial vehicles — so in practice nearly everyone takes it.
The vehicle you bring to the skills test matters just as much. Test in an automatic and you get an E restriction limiting you to automatics; test with a pintle hook instead of a fifth wheel and you get O. Both need a full skills retest to undo, so decide what you will actually be driving before you book.
Start with general knowledge
Add the endorsements you need
- Hazardous Materials — 30 questions · 80% to pass
- Tank Vehicles — 20 questions · 80% to pass
- Doubles and Triples — 20 questions · 80% to pass
- Passenger Transport — 20 questions · 80% to pass
- School Bus — 20 questions · 80% to pass
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Frequently asked questions
What tests do I need for a Class B CDL?
The General Knowledge, Air Brakes knowledge tests. Air brakes is only needed if the vehicle you drive and test in has them — skip it and an L restriction goes on your licence.
How many questions are on the Class B written test?
The general knowledge test is 50 questions at 80% to pass. Each additional test is separate and shorter.
Is this Class B practice test free?
Yes — every practice test here is free, with no ads, paywall or account.
