Samenvatting
Investigations on the relation between skidding resistance and the risk of skidding accidents are considered. The results show the skidding risks associated with different road characteristics. Even the highest standards of resistance will not ensure complete freedom from skidding but the risk is greatly reduced with coefficients above 0.6; in most cases a value of about 0.5 is acceptable. As coefficients decrease below 0.4 the risk increases rapidly, but few present-day roads are in this range.