Truck semi-trailer and full trailer combination in which the semi-trailer and the full trailer can be locked together for backing

摘要

A cargo-carrying vehicle including a forward cargo-carrying body; a rearward cargo-carrying body; and an apparatus for locking the forward cargo-carrying body and the rearward cargo-carrying body together so that the forward and rearward cargo-carrying bodies can be backed as one unit. In some embodiments, the apparatus can provide at least three spacings between the forward cargo-carrying body and the rearward cargo-carrying body.