CDL Class B Practice Test
Class B CDL covers straight trucks, buses, and large vehicles. Practice general knowledge questions tailored for Class B written test prep.
General Knowledge
20 free questions per day · Instant explanations as you study · Sign up free to save scores
- ✓ Pass mark 80% · instant score
- ✓ Change your answer before Next
- ✓ Review missed questions after each test
- ✓ 1 free practice start per category per day
About this CDL practice test
The real general knowledge written exam typically requires about 80% to pass. PassCDL randomizes questions from our bank of 170+ items so each attempt feels like a new test.
PassCDL Pro ($19.99/mo) adds longer exam simulations, hazmat & passenger endorsements, and unlimited retakes across every category. See pricing.