Abstract
The analysis and solution of road safety problems require knowledge of the accident process on a level of the individual road-user in/ on his vehicle in the traffic surroundings. From this starting-point accident prevention strategies must be developed, which deal with characteristics of road users, vehicles, roads, road surroundings and their interactions. A few possibilities are given how to define safety problems and how to set priorities. Problem identification and priority setting of safety measures are bases on the political assessment of the perception of "facts and figures" on road safety.