Maine CDL Endorsements
Endorsements are add-ons to your Maine CDL that authorize specific vehicle types or cargo. Each requires a separate knowledge test, taken through Maine Bureau of Motor Vehicles, and the endorsement codes are federal, so a Maine endorsement is recognized in every state. With lumber and paper products, seafood and cold-chain, potato agriculture shaping Maine 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 Maine
In Maine (ME), required to transport any quantity of hazardous materials that require placarding under federal HazMat regulations.
What to Study for the ME Test
For the Maine (ME) 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 Maine (ME)
- Lumber and paper products: roofing, coatings, and compressed-gas deliveries to job sites
When It's Required in Maine
In Maine (ME), 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 ME Test
For the Maine (ME) Tank Vehicles test, study liquid surge and baffled tanks, outage allowances, inspections, high-center-of-gravity handling, and rollover prevention strategies.
Tank Vehicles in Maine (ME)
- Seafood and cold-chain: juice, wine, and liquid food tankers where the crop calls for it
When It's Required in Maine
In Maine (ME), 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 ME Test
For the Maine (ME) Passenger test, study passenger safety protocols, controlled loading and unloading, emergency door operation, on-road passenger management, and distracted-driving rules.
Passenger in Maine (ME)
- Seafood and cold-chain: farm labor crew buses carrying 16 or more workers
- Tourism and resort supply: motorcoaches, hotel shuttles, and airport buses
- Transit agencies, charter companies, and church or community buses across Maine
When It's Required in Maine
In Maine (ME), 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 ME Test
For the Maine (ME) 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 Maine (ME)
- Maine 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 Maine
In Maine (ME), 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 ME Test
For the Maine (ME) 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 Maine (ME)
- LTL carriers running twin-trailer sets on Maine interstates, where permitted
When It's Required in Maine
In Maine (ME), 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 ME Test
For the Maine (ME) 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 Maine (ME)
- Lumber and paper products: dump trucks, mixers, and flatbed tractors on construction routes
- Almost every Class A and Class B vehicle in Maine; skip this test and your CDL carries an L restriction
When It's Required in Maine
In Maine (ME), essential for Class A drivers operating tractor-trailers, lowboys, and other multi-unit combinations over federal weight thresholds.
What to Study for the ME Test
For the Maine (ME) Combination Vehicles test, study coupling and uncoupling procedures, air line connections, trailer handling characteristics, off-tracking, and full combination vehicle inspections.
Combination Vehicles in Maine (ME)
- Lumber and paper products: flatbed and step-deck loads of steel, lumber, and building materials
- Seafood and cold-chain: refrigerated produce loads to distribution centers and out of state
- Tourism and resort supply: event and production freight moving between venues
- Required for any Class A CDL issued in Maine
Not sure which Maine CDL endorsements you need?
Answer a few questions about your vehicle and operation, and the Maine CDL Selector Tool pinpoints the endorsements you need in Maine.