2008 up to date enough for you? From a comprehensive study carried out for the Municipality of Copenhagen to examine the effects cycle facilities in Copenhagen were having on road safety, traffic volumes and perceived risk. "The safety effects of bicycle tracks in urban areas are an increase in accident and injuries of about 10%*. The safety effects of bicycle lanes in urban areas are an increase of 5% in crashes and 15% in injuries. Bicyclists' safety has worsened on the roads where bicycle facilities have been implemented" * From a private communication with the authors these are accident and injury rates i.e. they take into account changes in the number of cyclists. Happy? Thought not!