A Segway is a two-wheeled, self-balancing personal transportation device. It uses gyroscopic sensors and tilt technology to maintain balance, allowing users to stand upright while riding. The rider controls the device by leaning forward or backward, which adjusts the speed and direction. Introduced in 2001, the Segway was designed for short-distance travel and urban commuting. It has a maximum speed of around 12.5 miles per hour and can travel up to 24 miles on a single charge. While popular in some areas, its use has declined with the rise of other electric scooters and bikes.