Samenvatting
Since January 1984 it has been possible for local authorities in the Netherlands to assign an area as a 30 km /h area. The effects of the 30 km /h zone regulation are tested within 15 experimental zones. Main question is what is the effect of the 30 km /h regulation on the speed behaviour of motorised traffic. Therefore the "method floating car" is newly developed by the Ministry. The method is presented and discussed.