PURPOSE: To embody a simple and ecomonic moving means with a small storing area by loading the feet on both shafts of the tire of a single-wheel driven by a prime mover, and operating a handle extending longer than the holder of the driving wheel by the hands of a driver.

CONSTITUTION: The output of a prime mover a is transmitted to a tire c through a transmission device b, step boards e to load the feets of a driver are provided on both sides of the shaft of the tire c, a handle f extending longer than the holder of the tire c is held by the driver, and the balance is maintained by moving the posture of the driver according to the acceleration and the deceleration, and the direction-change, so as to drive this monocycle with motive power.