An electric bicycle, for example a pedal-assisted bicycle, comprising:
- a front wheel and a rear wheel, and a braking system comprising:
- a front brake associated with the front wheel and provided with a hydraulic actuator,
- a rear brake associated with the rear wheel and provided with a hydraulic actuator,
- wherein the braking system further comprises a main brake lever for combined actuation of the front brake and the rear brake, with which a hydraulic pumping cylinder is associated, and a hydraulic connecting circuit that operatively connects the hydraulic pumping cylinder of the main brake lever with the hydraulic actuator of the front brake and with the hydraulic actuator of the rear brake,
- wherein the braking system further comprises a back-up brake lever, with which a pumping hydraulic cylinder is associated, and a hydraulic line operatively connecting the pumping hydraulic cylinder of the back-up brake lever only with the hydraulic actuator of the rear brake or only with a hydraulic actuator associated with an auxiliary rear brake.
- an electrically-operated ABS device, interposed in the hydraulic connection between the hydraulic pumping cylinder of the main brake lever and at least the hydraulic actuator of the front brake,
- said ABS device being configured to decrease the fluid pressure supplied to said hydraulic actuator of the front brake during a braking controlled by said main brake lever, in case a tendency of the front wheel to lock and/or a tendency of the rear wheel to lose contact with the ground is detected,
- one or more sensors configured to detect, during braking of the electric bicycle, a tendency of the front wheel to lock and/or a tendency of the rear wheel to lose contact with the ground, and
- an electronic controller programmed to activate the ABS device upon receipt of a signal from said one or more sensors, and
- the hydraulic line that connects the pumping hydraulic cylinder of the back-up brake lever with the hydraulic actuator of the rear brake comprises a first one-way valve therein, said one-way valve allowing a passage of fluid only in the direction of the hydraulic actuator of the rear brake, while in the hydraulic line that connects the pumping hydraulic cylinder of the main brake lever or the ABS device, with the hydraulic actuator of the rear brake, a second one-way valve is interposed, which allows a passage of fluid only in the direction of the hydraulic actuator of the rear brake.