Dynamic speed adaptation in adverse conditions.

Accident risk in adverse conditions (wet/slippery road, darkness) increases drastically, and speed adaptation in these conditions is often inappropriate. The safety potential of more appropriate speeds in these situations is high. Appropriate highest speeds in different conditions are discussed. A system which limits the maximal speed of the vehicle in the actual situation (on wet/slippery road, at sharp curves, in darkness and in decreased visibility) via in-vehicle equipment is proposed. The estimated safety effect of the proposed system is a 20%-40% reduction of injury accidents in Sweden. (A)