-
Commercial Driver Education in California
California's Requirements
Unless you're employed as a public transit bus driver, California does not require you to complete any specific classroom or behind-the-wheel training program before applying for a commercial driver's license (CDL).
If you're getting hired as a public bus driver, the company that you've applied with will provide the training. Check with your human resources department for answers to any training questions.
Why Get Professional CDL Training?
Even though you're not required to have professional training, it's unlikely that you'll pass the CDL tests without it. After all, where else but in a class will you get to practice driving a commercial vehicle, and get up-to-date training about all the laws and procedures? Studying the Commercial Driver Handbook helps with the written test, but doesn't do much for helping you pass the behind-the-wheel portion.
There are a few ways to receive training to drive commercially. Community colleges and trucking schools offer programs. If your job requires a CDL, your employer will (or should) provide its own training program, or pay for you to attend one. If the program is approved by the DMV, you can submit a Certificate of Driving Skill (Form DL 170) from your employer to skip the skills and on-road driving test.
DMV Testing
Whether you've had professional training or not, the DMV will put you through a set of rigorous tests. You must successfully complete:
- A written knowledge and laws test.
- A two-part driving test consisting of an extensive pretrip inspection, and the actual driving skills requirements.
Written Knowledge and Laws Test
This exam covers driving laws and rules, basic commercial vehicle maintenance, inspection requirements, safe cargo transport, vehicle control, driving in extreme conditions, and other commercial vehicle knowledge.
You'll also be tested on driving skills, including backing, turning, other vehicle movement, road hazards, handling emergencies, rural and urban driving, clutch usage, up and down grades, and more.
Additional written tests are required if the vehicle you will drive has air brakes, or if you seek endorsements for special equipment. The additional tests are for:
- Air brakes
- Combination vehicles
- Passenger transport
- Hazardous materials
- Tank vehicles
- Double and triple trailers
The DMV provides an online practice test. For more practice, consider purchasing another test with 50 to 100 questions on it. These test questions are also culled from the Commercial Handbook.
Pretrip Inspection
The pretrip inspection portion of your driving test is a very involved, full inspection of the vehicle and its systems, inside and out, including:
- Vehicle overview: any obvious problems or concerns.
- Engine compartment: leaks, hoses, oil, coolant, fluids, and belts. On those areas that are not belt driven, you must point this out to the examiner and explain why belts aren't needed.
- Cab: gauges, mirrors, seat belts, steering, and emergency equipment.
- External equipment: brakes, reflectors, shocks, mounts, tie-downs, and more.
- Other external equipment: fuel tanks, exhaust, drive shafts, doors, ties, couplings, catwalks, latches, kingpin, and other safety equipment.
- Trailer and connections, sides and tires, wheels.
The Commercial Driver Handbook has a comprehensive outline of the areas and components you will be required to know and to inspect in this portion of your testing.
Skills Test and Driving Test
The CDL on-road test is broken into two sections: a skills test and a driving test. The skills test includes:
- Backing
- Alley docking
- Parallel parking
- Turning right
The driving test, which takes between 45 and 60 minutes to complete, includes testing on:
- Turning
- Intersections
- Rural and urban driving
- Rural and urban lane changes
- Stopping and starting
- Freeway driving
- Driving on curves
- Driving on up and down grades
- Railroad crossings
- Bridges and overpasses
- Clutch, gear, and brake usage
Keep an eye on the posted bridge clearance, as the examiner may ask you for the bridge clearance height after you have passed under a bridge.
Other Topics in This Section
Your Opinion Matters To Us!
Send Feedback
We put a lot of effort into making our content helpful & accurate. Please let us know if you see something that isn't clear or correct; we are here to ease any frustrations you may have while navigating DMV topics. We are not a government agency, please reach out to your local DMV, insurance agent, or respective professional for further assistance on specific situations.

