Vehicle Types

Truck and trailer types

8 terms

18-Wheeler

A semi-truck and trailer combination with 18 wheels total, typically 10 on the tractor and 8 on the trailer, used for commercial freight transport.

Bobtail

A semi-truck tractor operating without a trailer attached, typically when traveling to pick up a load, repositioning between loads, or returning after delivery.

Dry Van

A fully enclosed, non-refrigerated box trailer used for transporting dry, non-perishable freight that doesn't require temperature control.

Flatbed

An open trailer with a flat, level deck and no sides, roof, or enclosure, used for transporting oversized loads, construction materials, and heavy equipment.

Reefer

A refrigerated trailer equipped with a cooling unit to transport temperature-sensitive cargo like food, pharmaceuticals, and other perishables at controlled temperatures from -20°F to 70°F.

Semi-Truck

The powered tractor unit of a tractor-trailer combination that pulls semi-trailers via a fifth-wheel coupling, carrying only part of the load weight.

Sleeper Cab

A semi-truck cab equipped with a sleeping compartment behind the driver's seat, allowing drivers to rest during long-haul trips while complying with hours-of-service regulations.

Tanker Trailer

A cylindrical tank mounted on a trailer frame, designed to transport liquids, gases, or dry bulk materials in large quantities.