Confirm Your O Restriction
Review your CDL and your state’s current application, permit, fee and scheduling requirements.

Learn why the O restriction appears on a Class A CDL and what you must do to qualify for tractor-trailer operation with a fifth-wheel connection.
The O restriction indicates that a Class A CDL holder is not authorized to operate a tractor-trailer combination connected by a fifth wheel. It is applied when the driver completed the Class A skills test in a vehicle with a pintle hook or another non-fifth-wheel connection.
The restriction does not prevent operation of vehicles that the CDL holder is otherwise properly licensed and endorsed to drive, including qualifying Class B vehicles. Removing O expands the Class A combinations the driver may legally operate.
A fifth wheel is a circular coupling plate mounted on the tractor. Its locking mechanism connects to the trailer’s kingpin, allowing the semitrailer to pivot while maintaining a secure connection.
Under federal rules, removing O requires retaking all three CDL skills tests in a representative tractor-trailer. Your state controls the application and scheduling process.
Review your CDL and your state’s current application, permit, fee and scheduling requirements.
Arrange a Class A tractor-trailer equipped with a fifth-wheel connection for the test.
Complete the vehicle inspection, basic control skills and on-road driving tests in the representative tractor-trailer.
After you pass, follow the licensing agency’s process to receive a CDL without the O restriction.
PennDOT’s CDL fact sheet lists no knowledge test and no ELDT requirement for O-restriction removal, but a skills test is required. Federal rules specify all three skills-test sections.
Review the PennDOT Fact SheetDemonstrate that you can inspect the representative tractor-trailer.
Complete the required off-road maneuvers.
Demonstrate safe operation of the fifth-wheel combination on public roads.
Confirm permits, fees, waiting periods and vehicle-document requirements with PennDOT.
Clear answers about the restriction, fifth-wheel equipment, testing and training.
The O restriction means a Class A CDL holder is not authorized to operate a tractor-trailer combination connected by a fifth wheel. It is placed on the CDL when the Class A skills test is taken in a combination vehicle with a pintle hook or another non-fifth-wheel connection.
A fifth wheel is the coupling device mounted on a tractor that locks around the trailer kingpin. It allows the tractor and semitrailer to pivot while remaining securely connected.
Federal rules require the driver to retake all three CDL skills tests in a representative Class A tractor-trailer with a fifth-wheel connection. State application, permit, fee and scheduling procedures still apply.
PennDOT’s current CDL fact sheet lists no knowledge test and no ELDT requirement for O-restriction removal, but it does require a skills test. Always confirm current requirements with PennDOT before scheduling.
Federal and Pennsylvania restriction-removal tables do not require ELDT solely to remove O. Optional practice may still help you safely operate the test vehicle and prepare for all three skills-test sections.
Talk with Patriot CDL about your license, your state requirements and fifth-wheel tractor-trailer test preparation.