California General Knowledge Test

About the California General Knowledge Test

California's roads test every skill you need. You'll drive through Central Valley fog. You'll descend the Grapevine's steep grades on I-5. Our test prepares you for these real-world challenges.

Agriculture drives our state. You need cargo securement for produce and livestock. The ports of Los Angeles and Long Beach move massive container loads. Brake checks and pre-trip inspections keep you safe.

Weather changes fast here. Snow in the Sierra, rain in the Bay Area, heat in the desert. Each condition changes your driving. Our questions cover these scenarios.

Start with our 50-question practice test. It's free and matches the actual DMV test. Score 80% or higher and you'll know you're ready.

What This Test Covers

• Safe driving procedures – essential for navigating California's congested highways like I-405.
• Air brakes – vital for handling the steep grades of the Grapevine on I-5.
• Combination vehicles – common for California's port-to-warehouse routes.
• Cargo securement – critical for agriculture loads in Central Valley.
• Vehicle inspection – required before every trip; California CHP enforcement is strict.
• Communications and hazard awareness – especially in California's fog and mountain passes.

Study Tips

Study the California Commercial Driver Handbook. Pay extra attention to air brakes and combination vehicles – they show up a lot on our test. Use our practice tests to find weak spots.

Schedule your DMV appointment early. Slots fill fast, especially in big cities. Bring your ID, medical certificate, and proof of residency. Don't forget your application fee.

California DMV Information

You take the General Knowledge test at a California DMV office. Not every location offers CDL testing, so check the DMV website first. You must make an appointment online – walk-ins are rare.

Fees: $40 for the knowledge test, $120 for the skills test. You need a valid DOT medical certificate from a certified examiner. Bring proof of identity, like a birth certificate or passport.

If you fail, you can retake the test after waiting one day. No limit on attempts. Use our practice tests between appointments to improve your score.

Frequently Asked Questions

Related Resources

Other California CDL Practice Tests

Test Details

• State: California
• Test: General Knowledge Test
• Questions: 140
• Passing Score: 80%
• Time Limit: 60 minutes
• Cost: Free

Need ELDT Training?

If you're getting your first CDL, you need ELDT theory training before your skills test.