Method for handling brake failure of autonomous vehicle and device and system therefor

A brake failure handling system for an autonomous vehicle, comprising:

• a first autonomous vehicle configured to transmit a rescue request signal in response to detecting a failure of a brake system thereof while traveling;
• and
• a control server configured to select and operate a second autonomous vehicle for completely braking the autonomous vehicle based on the rescue request signal,
• wherein the control server is configured to:
• operate the first autonomous vehicle to move a bumper of the first autonomous vehicle into contact with a bumper of the second autonomous vehicle or docking the first autonomous vehicle with the second autonomous vehicle through speed control and steering control for at least one of the first autonomous vehicle and the second autonomous vehicle;
• and
• perform deceleration control of the second autonomous vehicle when the bumpers of the first autonomous vehicle and the second autonomous vehicle are in contact with each other or when the docking of the first autonomous vehicle and the second autonomous vehicle has been completed, thereby completely braking the first autonomous vehicle.

A device for handling a brake failure of an autonomous vehicle, comprising:

• a failure detector configured to detect a failure of a brake system of the autonomous vehicle;
• a communicator configured to transmit a rescue request signal to a control server in response to the failure being detected;
• and
• a controller configured to operate the autonomous vehicle to move a bumper of the autonomous vehicle into contact with a bumper of a preceding autonomous vehicle or dock the autonomous vehicle with the preceding autonomous vehicle through speed control and steering control under control of the control server,
• wherein the autonomous vehicle is completely braked under deceleration control of the preceding autonomous vehicle when the bumper of the autonomous vehicle and the bumper of the preceding autonomous vehicle are in contact with each other or when the docking of the autonomous vehicle and the preceding autonomous vehicle has been completed.