Free Class B CDL Practice Test (2026)
For single vehicles with a GVWR of 26,001 lbs or more, or such a vehicle towing a unit under 10,000 lbs.
80%Passing score
50Questions (General Knowledge)
3Knowledge tests
FreeTo start
A Class B CDL is for big single (straight) vehicles. Think box trucks, large buses, and dump trucks, as long as any trailer behind them stays under 10,000 lbs.
Try Class B sample questions
Real questions from the Class B CDL knowledge test. Answer below and you'll see the correct answer and an explanation instantly.
Question 1 of 5
¿Cuál es la causa principal de un derrape de las ruedas delanteras?
What a Class B CDL lets you drive
- Straight trucks and large box trucks
- City and transit buses, school buses
- Dump trucks with small trailers
- Delivery trucks (furniture, freight)
What's on the Class B CDL test
The Class B exam combines these knowledge tests. Practice each one: