Estimation of the effects of countermeasures on different types of accidents in the presence of regression effects.
In an earlier paper [Danielsson, 1986], we studied the problem of estimating the safety effect of a countermeasure on the expected number of accidents at road junctions when high-accident sites are selected for the study. Often, however, the countermeasure leads to varying effectiveness on different types of accidents. This paper is a generalization in that we estimate effects of countermeasures for each type of accident. A major result, for which empirical support is provided, is that the expected regression effect is the same for all types of accidents.
Danielsson
S
S
Swedish Road and Traffic Research Institute, Linköping.
D000063:Accidents, Traffic / Q000517:prevention & control*; D006801:Humans; D012044:Regression Analysis; D012449:Safety; D013548:Sweden; D014947:Wounds and Injuries / Q000517:prevention & control*