The Segway Human Transporter is the first of its kind - a self-balancing, personal transportation device designed to go anywhere people do. Easy to use and operate, the two-wheeled Segway sports high-tech gyroscopes that monitor your balance 100 times a second and automatically respond to your body's movements. To move forward, the rider simply leans forward. To stop or move backwards, the rider leans back slightly. The rider glides smoothly as the Segway senses where you want to go. We use Lean Steer i2 Segways on our San Francisco Tours.