Power assisted bicycle

An electric assist bicycle comprising an electric motor, the electric assist bicycle further comprising:

• a control unit configured to execute, in a switching manner, a first mode in which first auxiliary driving force from the electric motor is added to human driving force based on pedal stepping force for traveling and a second mode in which second auxiliary driving force from the electric motor is added to pushing force on a vehicle body for push-walking or the second auxiliary driving force is added for self-propelling the electric assist bicycle;
• a second mode operation unit configured to transmit a signal for executing the second mode to the control unit;
• and
• a braking device configured to apply braking force to prevent backward movement of the electric assist bicycle in a case where a braking condition is met, wherein
• the braking condition includes at least one of a first braking condition where an upslope is detected after an operation of the second mode operation unit ends and a second braking condition where backward movement of the electric assist bicycle is detected after an operation of the second mode operation unit ends.

An electric assist bicycle comprising an electric motor, the electric assist bicycle further comprising:

• a control unit configured to execute an electric assist mode in which auxiliary driving force from the electric motor is added to human driving force based on pedal stepping force for traveling;
• and
• a braking device configured to apply braking force to prevent backward movement of the electric assist bicycle in a case where a braking condition is met, wherein
• the braking condition includes at least one of a first braking condition where an upslope is detected in a case of stopping after traveling at or above a predetermined speed, and a second braking condition where backward movement of the electric assist bicycle is detected within a predetermined time in a case of stopping after traveling at or above a predetermined speed.