Idaho CDL Endorsements
Endorsements are add-ons to your Idaho CDL that authorize specific vehicle types or cargo. Each requires a separate knowledge test, taken through Idaho Transportation Department, and the endorsement codes are federal, so a Idaho endorsement is recognized in every state. With agriculture and potato processing, lumber and forest products, mining equipment shaping Idaho 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 Idaho
In Idaho (ID), required to transport any quantity of hazardous materials that require placarding under federal HazMat regulations.
What to Study for the ID Test
For the Idaho (ID) 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 Idaho (ID)
- Lumber and forest products: roofing, coatings, and compressed-gas deliveries to job sites
- Mining equipment: blasting agents and mine chemicals moving under placards
- Food manufacturing: cleaning agents, batteries, and other placarded retail freight
When It's Required in Idaho
In Idaho (ID), 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 ID Test
For the Idaho (ID) Tank Vehicles test, study liquid surge and baffled tanks, outage allowances, inspections, high-center-of-gravity handling, and rollover prevention strategies.
Tank Vehicles in Idaho (ID)
- Agriculture and potato processing: juice, wine, and liquid food tankers where the crop calls for it
- Food manufacturing: beverage, dairy, and food-grade liquid tankers
When It's Required in Idaho
In Idaho (ID), 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 ID Test
For the Idaho (ID) Passenger test, study passenger safety protocols, controlled loading and unloading, emergency door operation, on-road passenger management, and distracted-driving rules.
Passenger in Idaho (ID)
- Agriculture and potato processing: farm labor crew buses carrying 16 or more workers
- Transit agencies, charter companies, and church or community buses across Idaho
When It's Required in Idaho
In Idaho (ID), 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 ID Test
For the Idaho (ID) 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 Idaho (ID)
- Idaho 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 Idaho
In Idaho (ID), 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 ID Test
For the Idaho (ID) 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 Idaho (ID)
- Mining equipment: double-trailer bulk sets hauling coal, aggregate, and ore where permitted
- Food manufacturing: twin 28-foot LTL trailer sets on the interstates
When It's Required in Idaho
In Idaho (ID), 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 ID Test
For the Idaho (ID) 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 Idaho (ID)
- Lumber and forest products: dump trucks, mixers, and flatbed tractors on construction routes
- Mining equipment: every heavy-haul and bulk truck on the mine roads
- Almost every Class A and Class B vehicle in Idaho; skip this test and your CDL carries an L restriction
When It's Required in Idaho
In Idaho (ID), essential for Class A drivers operating tractor-trailers, lowboys, and other multi-unit combinations over federal weight thresholds.
What to Study for the ID Test
For the Idaho (ID) Combination Vehicles test, study coupling and uncoupling procedures, air line connections, trailer handling characteristics, off-tracking, and full combination vehicle inspections.
Combination Vehicles in Idaho (ID)
- Agriculture and potato processing: refrigerated produce loads to distribution centers and out of state
- Lumber and forest products: flatbed and step-deck loads of steel, lumber, and building materials
- Mining equipment: lowboys and heavy-haul combinations moving mining equipment
- Food manufacturing: regional and over-the-road tractor-trailer distribution runs
Not sure which Idaho CDL endorsements you need?
Answer a few questions about your vehicle and operation, and the Idaho CDL Selector Tool pinpoints the endorsements you need in Idaho.