Being anywhere near a road is one of the most lifethreatening things one can do.
Today’s invention is to map and make available the police data on exactly where accidents have happened on our roads (using eg Google Maps or Earth) and then to offer a tool which will generate the shortest route A->B minimising your total exposure to crash probability.
Online route planners already have options to avoid congestion, and bizarrely, motorways, so extending this to accident data should be comparatively straightforward.
Over time, no doubt this information would lessen traffic, and therefore accidents, on currently dangerous routes, although it might also lead to an increase in rat-running.
Ideally, it might allow a deeper understanding of the factors which make certain roads more perilous than others.