There is usually significant HEAT LOSS between the bay opening and the commercial vehicles, and the correct design of the entire loading bay is therefore necessary to limit heat loss generated by an incorrect vehicle docking system at the loading bay as much as possible.
In the first photo are several commercial vehicles docked at a standard loading bay. Note the rear door open to 180 degrees, which may be opened further until it touches the wall of the truck.
It is clearly impossible to rationally load the vehicle from standard loading bays with docks at the standard height of around 1100-1200mm. For the functional loading of these vehicles the loading bay must be specialized.
CAMPISA advises dedicating a series of loading bays to commercial vehicles, creating a dock with a height of around 60-70cm (the easiest system is to raise up an area of the hard standing).