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