To improve the suitability and adequateness of the traffic safety policy a systematic approach is needed, by which the policy process is made more explicit. Main elements in that policy are the selection of ./.areas of attention and problems, the selection of measures and the indication of priorities in its execution. Therefore there is a need for (1) a good idea of the lack of safety in traffic (2) criteria for the selection of problem areas and (3) criteria for the selection of measures. This study on the trend analysis is aimed at the first. For a number of more specific elaborations and calculations see B 16361.
Samenvatting