An access door for a rear storage compartment of a motorized tricycle. A motorized tricycle is provided having a rear storage compartment with a rearward facing access opening. An access door, when in a closed position, is positioned in a substantially vertical orientation in the access opening. A hinge assembly is provided having a door mounting secured to the access door and a body mounting secured to the motorized tricycle. At least one pivot linkage is positioned on each side of the access door extending between the door mounting and the body mounting. The pivot linkage accommodates movement of the access door from the closed position in the access opening to an open position with a bottom edge of the access door positioned above the access opening, while maintaining the access door in a substantially vertical orientation during pivotal movement.