Kentucky CDL Endorsements
Endorsements are add-ons to your Kentucky CDL that authorize specific vehicle types or cargo. Each requires a separate knowledge test, taken through Kentucky Transportation Cabinet, and the endorsement codes are federal, so a Kentucky endorsement is recognized in every state. With automotive assembly, bourbon and beverage logistics, coal and mining shaping Kentucky 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 Kentucky
In Kentucky (KY), required to transport any quantity of hazardous materials that require placarding under federal HazMat regulations.
What to Study for the KY Test
For the Kentucky (KY) 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 Kentucky (KY)
- Bourbon and beverage logistics: cleaning agents, batteries, and other placarded retail freight
- Coal and mining: blasting agents and mine chemicals moving under placards
When It's Required in Kentucky
In Kentucky (KY), 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 KY Test
For the Kentucky (KY) Tank Vehicles test, study liquid surge and baffled tanks, outage allowances, inspections, high-center-of-gravity handling, and rollover prevention strategies.
Tank Vehicles in Kentucky (KY)
- Bourbon and beverage logistics: beverage, dairy, and food-grade liquid tankers
When It's Required in Kentucky
In Kentucky (KY), 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 KY Test
For the Kentucky (KY) Passenger test, study passenger safety protocols, controlled loading and unloading, emergency door operation, on-road passenger management, and distracted-driving rules.
Passenger in Kentucky (KY)
- Transit agencies, charter companies, and church or community buses across Kentucky
When It's Required in Kentucky
In Kentucky (KY), 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 KY Test
For the Kentucky (KY) 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 Kentucky (KY)
- Kentucky 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 Kentucky
In Kentucky (KY), 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 KY Test
For the Kentucky (KY) 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 Kentucky (KY)
- Bourbon and beverage logistics: twin 28-foot LTL trailer sets on the interstates
- Coal and mining: double-trailer bulk sets hauling coal, aggregate, and ore where permitted
When It's Required in Kentucky
In Kentucky (KY), 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 KY Test
For the Kentucky (KY) 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 Kentucky (KY)
- Automotive assembly: the tractors and straight trucks on every plant route
- Coal and mining: every heavy-haul and bulk truck on the mine roads
- Almost every Class A and Class B vehicle in Kentucky; skip this test and your CDL carries an L restriction
When It's Required in Kentucky
In Kentucky (KY), essential for Class A drivers operating tractor-trailers, lowboys, and other multi-unit combinations over federal weight thresholds.
What to Study for the KY Test
For the Kentucky (KY) Combination Vehicles test, study coupling and uncoupling procedures, air line connections, trailer handling characteristics, off-tracking, and full combination vehicle inspections.
Combination Vehicles in Kentucky (KY)
- Automotive assembly: just-in-time parts loads between assembly plants and suppliers
- Bourbon and beverage logistics: regional and over-the-road tractor-trailer distribution runs
- Coal and mining: lowboys and heavy-haul combinations moving mining equipment
- Required for any Class A CDL issued in Kentucky
Not sure which Kentucky CDL endorsements you need?
Answer a few questions about your vehicle and operation, and the Kentucky CDL Selector Tool pinpoints the endorsements you need in Kentucky.