All tests
/
 
 
 
 
 
Advertisement
Based on official California exam questions

CA CDL General Knowledge Marathon

  • Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements

Ready for something really challenging? This California CDL General Knowledge Marathon is a massive practice test that contains all 694 questions from our database for this CA endorsement. If you give an incorrect answer, we’ll remember that question and will display it to you again at the end of the exam until you’ve answered that question correctly. In other words, the Marathon will cycle through your missed questions until you answer each one correctly. You must make a 100% to pass. We suggest you attempt this one after you have practiced the state’s “regular” tests, but before the “Exam”. It might take some time, but you can do this!

120 min to complete
Available in EN and ES
CA commercial driver's license
Real exam-style pitfalls you’ll practice:
Common Traps
Distractors
Trick Wording
Double Negatives
This test is a Premium member exclusive. You'll get

All 650 exam-like questions specific to California

Interactive learning with AI personal tutor

Unique 360° Virtual Road Simulations

Get your money back if you don’t pass

Verified for accuracy: October 2025

Reviewed by Steven Litvintchouk, M.S.
Chief Educational Researcher (ACES member)
Methodology & Editorial Policy

What to expect on the actual CA exam

50

questions

40

correct answers to pass

80%

passing score

Are you in another state?

Ask AI Coach
Hi there! I'm Officer Frank