Hawaii CDL Endorsements
Endorsements are add-ons to your Hawaii CDL that authorize specific vehicle types or cargo. Each requires a separate knowledge test, taken through Hawaii county driver licensing offices, and the endorsement codes are federal, so a Hawaii endorsement is recognized in every state. With inter-island freight, tourism supply chain, military logistics shaping Hawaii 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 Hawaii
In Hawaii (HI), required to transport any quantity of hazardous materials that require placarding under federal HazMat regulations.
What to Study for the HI Test
For the Hawaii (HI) 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 Hawaii (HI)
- Military logistics: ammunition and defense cargo under placards for contractors
When It's Required in Hawaii
In Hawaii (HI), 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 HI Test
For the Hawaii (HI) Tank Vehicles test, study liquid surge and baffled tanks, outage allowances, inspections, high-center-of-gravity handling, and rollover prevention strategies.
Tank Vehicles in Hawaii (HI)
- Agriculture and food import: juice, wine, and liquid food tankers where the crop calls for it
When It's Required in Hawaii
In Hawaii (HI), 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 HI Test
For the Hawaii (HI) Passenger test, study passenger safety protocols, controlled loading and unloading, emergency door operation, on-road passenger management, and distracted-driving rules.
Passenger in Hawaii (HI)
- Inter-island freight: motorcoaches, hotel shuttles, and airport buses
- Military logistics: troop and agency passenger transport
- Agriculture and food import: farm labor crew buses carrying 16 or more workers
- Transit agencies, charter companies, and church or community buses across Hawaii
When It's Required in Hawaii
In Hawaii (HI), 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 HI Test
For the Hawaii (HI) 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 Hawaii (HI)
- Hawaii 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 Hawaii
In Hawaii (HI), 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 HI Test
For the Hawaii (HI) 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 Hawaii (HI)
- LTL carriers running twin-trailer sets on Hawaii interstates, where permitted
When It's Required in Hawaii
In Hawaii (HI), 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 HI Test
For the Hawaii (HI) 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 Hawaii (HI)
- Almost every Class A and Class B vehicle in Hawaii; skip this test and your CDL carries an L restriction
When It's Required in Hawaii
In Hawaii (HI), essential for Class A drivers operating tractor-trailers, lowboys, and other multi-unit combinations over federal weight thresholds.
What to Study for the HI Test
For the Hawaii (HI) Combination Vehicles test, study coupling and uncoupling procedures, air line connections, trailer handling characteristics, off-tracking, and full combination vehicle inspections.
Combination Vehicles in Hawaii (HI)
- Inter-island freight: event and production freight moving between venues
- Military logistics: defense logistics loads on and off base
- Agriculture and food import: refrigerated produce loads to distribution centers and out of state
- Required for any Class A CDL issued in Hawaii
Not sure which Hawaii CDL endorsements you need?
Answer a few questions about your vehicle and operation, and the Hawaii CDL Selector Tool pinpoints the endorsements you need in Hawaii.