The present disclosure provides a patient transporting device having a docking member at one end of the patient transporting device that allows to attach to and detach from a receiving portion of the patient loading systems in an emergency vehicle. The device includes a moveable base member that a patient lies down on, a pathway member for the base member to slidably move along tracks of the pathway member, and a docking member at one end of the pathway member that fits and mates with the receiving portion of the vehicle. In operation, the docking member docks with the receiving portion and establishes an extended bridge formed of the pathway member and the docking member of the device and the receiving portion of the vehicle. The extended bridge has a substantially coplanar surface so that the patient lying down on the base member may be easily loaded to the vehicle.