Upkar Engineering Company

A semi-trailer leads to more weight on the driven axles of the tractor than a truck .... Double deck trailers are generally a stepped box or curtain siders

A refrigerated container or reefer is an intermodal container (shipping ... When being transported over the road on a trailer they can be powered

This is aTripper Trailer

A supporting shaft or member on or with which a wheel or a set of wheels . . . A tandem axle is a group of two or more axles situated close together

Open truck trailer constructed to provide a low platform height. Designed for the transportation of extremely heavy or bulky property.

The purpose of a curtain sider is to allow the security and weather resistance of a box trailer with the ease of loading of a flatbed. ...