California CDL Endorsements
Endorsements are add-ons to your California CDL that authorize specific vehicle types or cargo. Each requires a separate knowledge test, taken through California Department of Motor Vehicles, and the endorsement codes are federal, so a California endorsement is recognized in every state. With port and intermodal freight, agriculture and produce, film and media logistics shaping California freight, the examples under each endorsement show where that endorsement pays off locally.
Not all endorsements apply to every CDL class. Use the CDL Selector to find what you need.
When It's Required in California
In California (CA), required to transport any quantity of hazardous materials that require placarding under federal HazMat regulations.
What to Study for the CA Test
For the California (CA) Hazardous Materials test, study shipping papers, placard and label selection, safe loading and segregation, emergency response procedures, and security-awareness requirements under federal law.
Hazardous Materials in California (CA)
- Port and intermodal freight: placarded containers and ISO tanks coming through the ports
- Technology distribution: cleaning agents, batteries, and other placarded retail freight
When It's Required in California
In California (CA), required for vehicles designed to transport liquids or gases in a tank permanently or temporarily attached to the vehicle, with individual tank capacity of more than 119 gallons.
What to Study for the CA Test
For the California (CA) Tank Vehicles test, study liquid surge and baffled tanks, outage allowances, inspections, high-center-of-gravity handling, and rollover prevention strategies.
Tank Vehicles in California (CA)
- Port and intermodal freight: ISO tank containers of chemicals and food-grade liquids
- Agriculture and produce: juice, wine, and liquid food tankers where the crop calls for it
- Technology distribution: beverage, dairy, and food-grade liquid tankers
When It's Required in California
In California (CA), required for commercial vehicles designed to carry 16 or more passengers including the driver: charter buses, transit coaches, and similar vehicles.
What to Study for the CA Test
For the California (CA) Passenger test, study passenger safety protocols, controlled loading and unloading, emergency door operation, on-road passenger management, and distracted-driving rules.
Passenger in California (CA)
- Agriculture and produce: farm labor crew buses carrying 16 or more workers
- Film and media logistics: motorcoaches, hotel shuttles, and airport buses
- Transit agencies, charter companies, and church or community buses across California
When It's Required in California
In California (CA), required for any driver transporting school-age students in a vehicle classified as a school bus under federal or state law.
What to Study for the CA Test
For the California (CA) School Bus test, study student loading zones, stop-signal arm procedures, railroad crossing rules, mirror adjustment, emergency evacuation drills, and state-specific school bus regulations.
School Bus in California (CA)
- California school districts and their contractors: every route driver needs S plus P
- Activity and athletics trips, which use the same S-endorsed drivers
When It's Required in California
In California (CA), required to pull double or triple trailers where permitted by state law. Common in regional and long-haul freight operations.
What to Study for the CA Test
For the California (CA) Doubles & Triples test, study coupling and uncoupling double and triple combinations, pull-out stability, off-tracking behavior, full combination inspections, and safe following distance.
Doubles & Triples in California (CA)
- Port and intermodal freight: twin-trailer LTL sets running the port and rail corridors
- Technology distribution: twin 28-foot LTL trailer sets on the interstates
When It's Required in California
In California (CA), required for any vehicle equipped with an air brake system, which covers most Class A tractor-trailers and many Class B straight trucks.
What to Study for the CA Test
For the California (CA) Air Brakes test, study air brake components, dual-circuit systems, inspection procedures, warning devices, pressure gauges, and stopping distance at highway speeds.
Air Brakes in California (CA)
- Almost every Class A and Class B vehicle in California; skip this test and your CDL carries an L restriction
When It's Required in California
In California (CA), essential for Class A drivers operating tractor-trailers, lowboys, and other multi-unit combinations over federal weight thresholds.
What to Study for the CA Test
For the California (CA) Combination Vehicles test, study coupling and uncoupling procedures, air line connections, trailer handling characteristics, off-tracking, and full combination vehicle inspections.
Combination Vehicles in California (CA)
- Port and intermodal freight: container drayage between the ports, rail ramps, and warehouses
- Agriculture and produce: refrigerated produce loads to distribution centers and out of state
- Film and media logistics: event and production freight moving between venues
- Technology distribution: regional and over-the-road tractor-trailer distribution runs
Not sure which California CDL endorsements you need?
Answer a few questions about your vehicle and operation, and the California CDL Selector Tool pinpoints the endorsements you need in California.