Equipment & Trailer Terms Glossary

Enclosed trailer for non-temperature-controlled freight.

Refrigerated trailer for temperature-controlled freight.

Open-deck trailer used for large or side-loaded freight.

Tractor-only work where the trailer is provided.

Tractor moving without a trailer attached.

Tractor coupling plate that connects to the trailer.

Trailer pin that locks into the fifth wheel.

Paired trailer axle group used for weight distribution.

Moving trailer axles to adjust weight balance.

Trailer support legs used when disconnected.

Air connectors between tractor and trailer.

Electrical cord between tractor and trailer.

Suspension system using air bags for smoother ride.

Auxiliary Power Unit used while parked.

Power Take-Off for auxiliary equipment.

Temperature-control machine on a reefer trailer.

Trailer frame used to haul shipping containers.

Locking device securing a container to a chassis.

Splash guard behind tractor or trailer tires.

Another term for trailer landing gear.

Protective rack behind the tractor cab.

Anti-lock Braking System.

Brake air connections between tractor and trailer.