Pass Your California CDL Written Test the First Time
DMV-Written-Test helps aspiring commercial drivers in California prepare with up-to-date practice exams based on the 2025 California Commercial Driver License (CDL) Manual. These CDL practice tests simulate the real exam administered by the California Department of Motor Vehicles.
Whether you’re applying for a Class A, B, or C CDL, our practice tests cover all core areas including General Knowledge, Air Brakes, Combination Vehicles, and state-specific trucking laws.
For official CDL manuals, appointment scheduling, and endorsement requirements, visit the California DMV CDL services page: https://www.dmv.ca.gov/
Start practicing now and earn your CDL permit confidently in California!
📘 What to Expect on the California CDL Knowledge Test
Aspect
Details
Number of Questions
50 (General Knowledge)
Passing Score
80% (40 correct answers required)
Test Format
Multiple Choice
Time Limit
Usually 60 minutes (varies by state)
Minimum Age
18 (in-state); 21 for interstate commerce
Test Languages
English, Spanish (varies)
Endorsement Areas
Air Brakes, Tankers, HazMat, School Bus, etc.
Retake Policy
Next business day (fees may apply)
❓ Frequently Asked Questions
How do I qualify for a CDL permit in California?
You must be at least 18 years old (21 for interstate driving), pass a vision exam, and pass the written General Knowledge test.
Is a training course required before taking the CDL test?
Yes, the FMCSA Entry-Level Driver Training (ELDT) is mandatory before taking the CDL skills test.
How long is a CDL permit valid in California?
Typically 180 days, renewable once. Check with your local DMV.
Can I take the CDL test in Spanish?
General Knowledge may be available in Spanish, but HazMat and other tests must be in English.
What happens if I fail the CDL knowledge test?
You may retake it the next day, though a fee may apply.
Do I need a regular driver’s license to apply?
Yes. A valid non-commercial driver’s license is required to apply for a CDL permit.
Do I need to take a separate test for endorsements?
Yes. Each CDL endorsement (e.g., HazMat, Tanker, School Bus) requires a separate written test.
What is ELDT and who needs it?
Entry-Level Driver Training (ELDT) is a federal requirement for all first-time CDL applicants and certain endorsement upgrades.
Can I use my out-of-state CDL in California?
You must transfer your CDL to California within 10 days of becoming a resident. Check with the DMV for full steps.
What documents do I need to apply for a CDL?
You need proof of identity, residency, Social Security number, and a valid driver’s license.
