The ornamental design for a handicapped-accessible three-wheeled motorcycle, as shown and described.
FIG. 1 is a front view of my design with the ramps retracted.
FIG. 2 is a rear view thereof with the ramps extended.
FIG. 3 is a right side elevational view of FIG. 1, showing a wheelchair in position of use and in broken lines as forming no part of the claimed design.
FIG. 4 is a left side elevational view showing a wheelchair mounted atop of FIG. 2, but with an unclaimed wheelchair shown in broken lines; and,