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It is an automobile safety system designed to reduce the
severity of an accident. Also known as pre-crash system, forward
collision warning system or collision mitigating system, it uses radar
and sometimes laser and camera sensors to detect an imminent crash.
The mandatory fitting of Advanced Emergency Braking Systems
in commercial vehicles will be implemented on 1 November 2013 for new vehicle
types and on 1 November 2015 for all new vehicles in the European Union.
Working
The full version of the system (Pre-Sense Plus) works in
four phases. In the first phase, the system provides warning of an impending
accident, while the hazard warning lights are activated, the side windows and
sunroof are closed and the front seat belts are tensioned. In the second phase,
the warning is followed by light braking, strong enough to win the driver's
attention. The third phase initiates autonomous partial braking at a rate of
3 m/s². The fourth phase decelerates the car at 5 m/s² followed by
automatic deceleration at full braking power, roughly half a second before
projected impact.
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