Yes. The ELOPS 120 bike is an electrical assistance bike.This assistance is only triggered when the user pedals (a motorised system that involves no pedalling is considered to be a moped, with usage restrictions and much stricter safety rules).A pedalling sensor near the chainset transmits the information to the bike's on-board computer, which triggers the motor.The bike's electric motor cuts out instantly when you brake or stop pedalling.Turning the pedals again will restart the motor so that you will benefit from the bike's electrical assistance once again.