Glossary Terms

Five or six heavy steel projections originating from the center hub; resembles a heavy wagon wheel.

A mechanism that allows a tandem axle suspension to be moved back and forth under the trailer, used to maximize weight distribution.

Refers to a single rear wheel truck.

Two large springs on either side of the trailer, resting on a trunnion tube in the center and connected to the axle on both ends.

The point of discharge on the bottom of a bulk tank or grain trailer. Located at the bottom of the body.

A side door located at the back corner of a livestock trailer, usually accompanied by a fold down ramp.

A covering with the sole purpose of weatherproofing a flatbed. These consist of support posts, wood sideboards, tarp bows, and a tarp.

Usually a roll-up door located in the middle section of a trailer.

A livestock trailer with three or four floors to accommodate small animals.

Occurs when the front axle is purposely located farther towards the front of the vehicle.