This paper summarizes with emphasis on methodological aspects a quantitative meta-analysis of studies evaluating the safety effectiveness of different bicycle facilities at road junctions using Bayesian method. The project consists of a literature survey as well as interviews with experts and cyclists, and an attempt to weave together these different sources in estimating the effect of particular lay-out. In summary, few studies from the Scandinavian countries exist that have treated this area with an acceptable methodology. Combined results, with the Bayesian technique, are therefore presented for only one lay-out comparison: Accident risks for cyclists at signalized intersections with and without signalized intersections with and without a cycle path. The results of this aggregation may be unreliable as well, due to deficiencies in the studies. New field studies should be initiated. (A)
Samenvatting