Truck Accident Terms and Definitions

Fixed Tandem Assembly of two axles and suspension that is attached to the chassis in one place, and cannot be moved fore and aft Bobtail Tractor Tractor operating without a trailer. Also refers to straight truck. Bogie (also spelled bogey) Assembly of two or more axles, usually a pair in tandem. Brake Horsepower (bhp) Engine horsepower rating as determined by brake dynamometer testing. (see Horsepower) GAWR (Gross Axle Weight Rating) Maximum weight an axle is rated to carry by the manufacturer. Includes both the weight of the axle and the portion of a vehicle's weight carried by the axle. Dead-Heading Operating a truck without cargo. Cabover (Cab-Over-Engine, COE) Truck or tractor design in which the cab sits over the engine on the chassis. Cargo Weight Combined weight of all loads, gear and supplies on a vehicle. PTO (Power Takeoff) Device used to transmit engine power to auxiliary equipment. TOFC (Trailer On Flatcar) Method of moving cargo which involves transporting semitrailers on railroad flat cars. Tandem Axle (Tandems) Pair of axles and associated suspension usually located close together. Kingpin Pin around which a steer axle's wheels pivot.

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	Did You Know?
	A Driver May Be On Duty For More Than 14 Hours. A driver may remain on duty for more than 14 hours; however, the driver cannot drive a CMV after the 14th hour after coming on duty. Also, the additional on-duty time will reduce on-duty time available under the 60/70-hour time limit.