Volvo has announced its next-generation Automatic Braking Technology. To debut in 2010 on the all-new S60, the system features improved components so that it can detect pedestrians who walk in front of the car and avoid impact at speeds below 15mph.

Key parts of the system are a radar unit in the front grille and a camera by the rear-view mirror. These are improved versions of those used in Volvo's current City Safe system: the radar has a wider field of view to detect pedestrians on the kerb and the camera has improved resolution to better identify objects. When the system predicts an impact an audible warning sounds and a light - resembling a brake lamp - illuminates in the head-up display. If the driver fails to respond then the system will fully apply the brakes to either prevent or reduce the severity of the impact.

Volvo points out that the main aim of the system is to allow drivers to brake or steer to avoid impact rather than relying on the system to stop the car. It also points out that the sensors work on the same principles as the human eye and therefore suffers slightly degraded performance in the dark or in poor weather.

In addition to the low-speed protection Volvo has updated its adaptive cruise control (ACC). On vehicles with an automatic transmission ACC will maintain a set gap between the car in front at all speeds, even if the car ahead stops. The previous system was not active below 18mph. Volvo claims the system can be used in queues of slow-moving stop-start traffic.

Some people will argue that systems like this encourage inattention behind the wheel. Whilst that is a valid concern it is important to remember that no driver is perfect and we all get distracted occasionally so an extra 'pair of eyes' to help scan for hazards is probably to be welcomed. Volvo's Collision Warning with Full Auto Brake and Pedestrian Safety will debut on the Volvo S60 in 2010.

John Lambert - 28 Sep 2009