Glossary of Truck Accidents Terms

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Fifth Wheel: Coupling device attached to a tractor or dolly which supports the front of a semitrailer and locks it to the tractor or dolly. The fifth wheel's center is designed to accept a trailer's kingpin, around which the trailer and tractor or dolly pivot in turns.

Fixed Tandem: Assembly of two axles and suspension that is attached to the chassis in one place, and cannot be moved fore and aft.

For-Hire Carrier: Company in the business of transporting freight belonging to others.