Lift attachable to a vehicle

A lifting system for lifting and lower people between a vehicle door and ground level uses a carriage that is slid underneath and out from the undercarriage of the vehicle. A lift platform is flush with the carriage when stowed and is capable of being raised from this position up to the door and lowered down to the ground. A series of housing are located on the underside of the carriage and have a sprocket gear thereon. Extension arms are attached to each gear and rotatably to a lift platform. Rack gears mesh with the sprocket gears for rotating the arms and thus the platform up and down, the rack gears articulated via one or more hydraulic drives, with rotation of the arms resulting in articulation of the platform.