Abstract: Disclosed herein is a cover for a semi-trailer vehicle having a cargo support surface bordered by a pair of longitudinal edge regions. The cover has a roof and a pair of side walls forming a cargo receiving passage therebetween; each of the pair of side walls terminating at a longitudinal free edge region to expose the cargo receiving passage to the cargo support surface. A lifting arrangement lifts the cover between a first position above the cargo support surface and a second position in abutment with the cargo support surface. Couplings removably couple each of the longitudinal free edge regions to a corresponding longitudinal edge region.