The marks left on the road when a vehicle brakes hard are actually quite distinctive enough to be detected by relatively rudimentary image processing.
Today’s invention is a system in which a camera is fitted on a car, capturing images of the road immediately ahead. This recognises skidmarks and other traces of rubber and tags these to their location via a GPS system.
Cars would pool their data about where skidmarks exist so that, over time, a map of dangerous braking situations is formed. This could then be used to issue a voice warning to a driver to slow before approaching somewhere where skidmarks have been frequently found.