Black-box recorders exist that store data onto an SD card in a constant loop. History depends on the available capacity - around 1 day for a 16GB card. When an

Black-box recorders exist that store data onto an SD card in a constant loop. History depends on the available capacity - around 1 day for a 16GB card. When an accident-event is detected (sudden acceleration or deceleration) the device permanently stores 1 minute either side of the event. http://www.roadhawk.co.uk/ http://www.roadhawk.co.uk/