Wyoming CDL Endorsements
Endorsements are add-ons to your Wyoming CDL that authorize specific vehicle types or cargo. Each requires a separate knowledge test, taken through Wyoming Department of Transportation, and the endorsement codes are federal, so a Wyoming endorsement is recognized in every state. With coal and energy hauling, oil and natural gas, livestock and agriculture shaping Wyoming 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 Wyoming
In Wyoming (WY), required to transport any quantity of hazardous materials that require placarding under federal HazMat regulations.
What to Study for the WY Test
For the Wyoming (WY) 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 Wyoming (WY)
- Coal and energy hauling: fuel, propane, and oilfield chemical deliveries that require placards (X endorsement with Tank)
- Trona and mining: blasting agents and mine chemicals moving under placards
When It's Required in Wyoming
In Wyoming (WY), 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 WY Test
For the Wyoming (WY) Tank Vehicles test, study liquid surge and baffled tanks, outage allowances, inspections, high-center-of-gravity handling, and rollover prevention strategies.
Tank Vehicles in Wyoming (WY)
- Coal and energy hauling: crude, condensate, and fuel tankers serving the oil and gas fields
When It's Required in Wyoming
In Wyoming (WY), 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 WY Test
For the Wyoming (WY) Passenger test, study passenger safety protocols, controlled loading and unloading, emergency door operation, on-road passenger management, and distracted-driving rules.
Passenger in Wyoming (WY)
- Transit agencies, charter companies, and church or community buses across Wyoming
When It's Required in Wyoming
In Wyoming (WY), 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 WY Test
For the Wyoming (WY) 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 Wyoming (WY)
- Wyoming 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 Wyoming
In Wyoming (WY), 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 WY Test
For the Wyoming (WY) 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 Wyoming (WY)
- Trona and mining: double-trailer bulk sets hauling coal, aggregate, and ore where permitted
When It's Required in Wyoming
In Wyoming (WY), 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 WY Test
For the Wyoming (WY) 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 Wyoming (WY)
- Coal and energy hauling: nearly every oilfield truck runs air brakes
- Livestock and agriculture: livestock and reefer tractors on air brakes
- Trona and mining: every heavy-haul and bulk truck on the mine roads
- Almost every Class A and Class B vehicle in Wyoming; skip this test and your CDL carries an L restriction
When It's Required in Wyoming
In Wyoming (WY), essential for Class A drivers operating tractor-trailers, lowboys, and other multi-unit combinations over federal weight thresholds.
What to Study for the WY Test
For the Wyoming (WY) Combination Vehicles test, study coupling and uncoupling procedures, air line connections, trailer handling characteristics, off-tracking, and full combination vehicle inspections.
Combination Vehicles in Wyoming (WY)
- Coal and energy hauling: tractor-trailer rigs hauling pipe, rig equipment, and frac sand
- Livestock and agriculture: livestock trailers and refrigerated meat loads
- Trona and mining: lowboys and heavy-haul combinations moving mining equipment
- Required for any Class A CDL issued in Wyoming
Not sure which Wyoming CDL endorsements you need?
Answer a few questions about your vehicle and operation, and the Wyoming CDL Selector Tool pinpoints the endorsements you need in Wyoming.