Abstract: A device for loading, unloading and carrying a bicycle in an upright position on a motor vehicle roof provided with a pair of transverse carrier rails, comprising a shaped tube having its base pivotally connected to a support fastened to a first carrier rail, adapted to be rotated in a continuous manner from a lowered position for the engagement or disengagement of the bicycle frame, to a raised position for transporting the bicycle. There are further provided means for supporting and securing bicycle front wheel and bicycle frame, that are fastened to the second carrier bar and to the free end of the tube, respectively.