Thermo King Unit

A brand of refrigeration unit mounted on the nose or under the floor of a reefer trailer. Thermo-King manufactures this unit.

Technology

An automobile addition or package including upgrades such as navigation, remote start, or customized audio. Abbreviated as Tech.

Tag Axle

A third axle, usually with four wheels, mounted at the rear of a standard tandem. Typically a tag axle lifts up to be taken out of a load carrying capacity.

Super Ultra Low Emissions Vehicle

U.S. classification for passenger vehicle emissions. The classification is based on producing 90% less emissions than an equivalent gasoline-powered vehicle. Abbreviated as SULEV.

Sub-Frame

A partial support frame at the rear of a tank trailer or frameless dump trailer usually where the suspension attaches.

Stern Drive Boats (IO)

A stern drive or inboard/outboard drive (I/O) is a form of marine propulsion. The engine is located inboard just forward of the transom (stern) and provides power to the drive unit (outdrive) [...]

Stainless Rear and Nose

A stainless steel exterior on the front and rear of a trailer. Primarily used for physical appearance and is less resistant to weather damage.

Spread Axle

The axle setting on a tandem suspension that is usually set at 10′ rather than closer together.