A shift paddle is a device for manually operating a transmission and initially originated in automobile racing as a device in which a driver shifts gears without taking their hands off the steering wheel. It is generally installed behind the left and right spokes of the steering wheel, and the gear can be lowered or raised by pulling the paddles according to the driver's will. Recently, it has been applied to electric vehicles as a device for operating the regenerative braking function. The driver can control the intensity of the regenerative braking function by manipulating the paddles.