ABSTRACT
The injury risk is highest on roads where relatively high differences in speed and direction are present in combination with moderate speed limits. The crash probability on a road type also depends mainly on its average speed because of the dependence of crash avoidance on the speed driven and also, of course, on the probability of a traffic conflict, which latter probability depends mainly on speed differences that cause overtaking manoeuvres and rear-end conflicts. In addition, road safety education has minor effects, because the risk reduction for new users of each road mode to the three- to fourfold lower risk levels of experienced road users requires several years of daily practice in traffic. The major obstacles for the zero-vision achievement of sustainable, safe road traffic are the lack of sufficient political priority for road safety, the lack of awareness for the road safety problem, and the general ignorance of the existence of effective road safety measures by authorities.
