I. Functionality of Control Parts
The structure of control part are shoe above and each part has the following functions:
1. The left brake lever is the lever for rear brake and brake power-off control switch. Gripping this lever will allow the rear brake to function and the rear wheel will stop, here the brake light will turn on and the voltage form controller output to the motor is reduced to zero, the motor will stop working to realize double safety of rear wheel braking.