EMERGENCY BRAKE SYSTEM FOR A HEAVY-DUTY VEHICLE

An emergency brake system for a heavy-duty vehicle, comprising: a pressure sensor arrangement configured to issue a first signal, S upon determination that the pressure in a regular brake circuit is zero or below a predefined pressure threshold value, a speed sensor configured to issue a second signal, S upon determination that the speed of the heavy-duty vehicle exceeds a predefined speed threshold, a parking-brake sensor configured to issue a third signal, S upon determination that the parking brake is in an applied state, a retarder brake configured to decelerate the heavy-duty vehicle upon activation of the retarder brake, a processing circuitry configured to activate the retarder brake upon receiving all of said three signals S S and S