Atze Dijkstra of SWOV has provided a nice survey last year of the meaning of all possible kinds of traffic facilities for a sustainably safe traffic system. He incorporated all internationally available primary literature sources with knowledge about the effects over the past decades. Overall these were almost 180 articles and reports, 28 of which concentrating on traffic safety of cyclists. However nice a survey, knowledge proves to rather limited and few grounds can as yet be found for measures typical for the sustainably safe approach.