Free Class A CDL Practice Test (2026)
For combination vehicles with a GCWR of 26,001 lbs or more, where the towed unit is heavier than 10,000 lbs.
80%Passing score
50Questions (General Knowledge)
3Knowledge tests
FreeTo start
A Class A CDL opens the most doors of any commercial license. You can drive combination vehicles (a tractor pulling one or more trailers), and with the right endorsements you can run most Class B and Class C vehicles too.
Try Class A sample questions
Real questions from the Class A CDL knowledge test. Answer below and you'll see the correct answer and an explanation instantly.
Question 1 of 5
¿Por qué se prefiere retroceder del lado del conductor en lugar del lado ciego?
What a Class A CDL lets you drive
- Tractor-trailers (semis / 18-wheelers)
- Truck and trailer combinations
- Tanker vehicles and flatbeds
- Most Class B and C vehicles (with endorsements)
What's on the Class A CDL test
The Class A exam combines these knowledge tests. Practice each one: