Which term refers to the tractor used to move trailers or to continue a load if the original tractor is disabled?

Which term refers to the tractor used to move trailers or to continue a load if the original tractor is disabled?

• A. Truck/Tractor
• B. Power Unit
• C. Transport
• D. Power Only/Power Unit

Answer: (D)

Power unit refers to the tractor portion that powers a trailer. When you need to move a trailer with only the tractor or continue a load if the original tractor is disabled, you’re engaging a power-only arrangement or using a power unit. The term Power Only emphasizes that only the tractor is provided, not a full trailer, while Power Unit names the tractor itself. Together they capture both the equipment and the service scenario described. The other terms are less precise: a generic truck/tractor doesn’t specify the role of pulling trailers, and transport isn’t a standard term for the tractor component.

Power unit refers to the tractor portion that powers a trailer. When you need to move a trailer with only the tractor or continue a load if the original tractor is disabled, you’re engaging a power-only arrangement or using a power unit. The term Power Only emphasizes that only the tractor is provided, not a full trailer, while Power Unit names the tractor itself. Together they capture both the equipment and the service scenario described. The other terms are less precise: a generic truck/tractor doesn’t specify the role of pulling trailers, and transport isn’t a standard term for the tractor component.