The Segway is the world's first self-balancing transportation device. Computers and motors in the base keep the Segway upright at all times. Users lean forward to move forward, and back to move backwards. Turning is done mechanically via hand control. Segways are driven by quiet, non-polluting electric motors at up to 12.5 mph (10 mph in the P-series). In laws that regulate or ban it, the applicable category is sometimes called "electric personal assistive mobility device".
Source: segway.comAdded: 6 January 2006