A trailer (102) for connecting to a vehicle (101), comprising a trailer coupler (103), at least one means for support (104) of the trailer (102) when not connected to the vehicle (101), and at least one parking brake (105) further characterized in that a control center (106) is connected to a at least one motor (108) for automatically raising and lowering said at least one means for support (104), and the control center (106) automatically engages and disengages said at least one parking brake (105) via a control mechanism (107) when the trailer coupler (103) is connected to a tow bar (201).