Abstract
This volume is one of the annexes to a main report on safety effects of road design standards which was compiled by SWOV in collaboration with other European partners, in 1993-1994. For the covering abstract of the report or the report itself, see C 2838. This annex summarises the alternative methods available for quantifying the relationship between road design standards, accidents and road user behaviour. Two methods are described: the before and after method and the cross-sectional approach.