Some new cars such as the Audi A8 pack some high tech electronics to enhance safety. Mike’s Electric Stuff has a look inside the Audi Night Vision System.
“Located in the Driver’s Information System, between the speedometer and rev counter a camera’s eye view of the road ahead is displayed to the driver. The system will highlight people using their heat source. Typically a person standing by the side of the road would be highlighted in yellow, indicating they are outside of the vehicles route, however should the person start to walk towards the road the advanced image processing system will identify that they could walk into the car’s path and will highlight them in red.”