Abstract
In order to detect accident black spots we have to know the probability of an accident for a traffic situation of some kind, or the mean number of accidents for some unit of time. In almost all procedures known to us, the various road locations are treated as isolated spots. With small accident figures it is difficult to detect such places in the known figures. An alternative procedure starts from the comparison of the location of each other. what do accident black spots in common and in which respects do they differ from save locations? This new procedure is described and discussed.