(such as bicycle lanes) which he contends encourage behavior that is contrary to the vehicular cycling practices. This contention is challenged by those who believe that such facilities increase cyclist safety, such as the authors of a meta-study on cycle infrastructure safety research at the University of British Columbia, who have publicly stated that "In comparison to cycling on bicycle-specific infrastructure (paths, lanes, routes), on-road cycling appears to be less safe." However, that study also concludes that "sidewalks and multi-use trails pose the highest risk" and Forester has published a reply. Forester's contention is also supported by some studies in Europe and the US, including a 2012 evaluation of bicycle facilities by the District of Columbia Department of Transportation, which found that crashes increased by up to a factor of two after installing bicycle tracks. The Transport Research Laboratory's 2011 literature review found that "evidence suggests that the points at which segregated networks intersect with highways offer heightened risk, potentially of sufficient magnitude to offset the safety benefits of removing cyclists from contact with vehicles in other locations." A 2008 study commissioned by the Copenhagen Municipality noted that "cycle tracks constructed have resulted in increases in accidents and injuries of 9-10% on the reconstructed roads." A Danish 2008 study conducted by the Traffic Research Group of Aalborg University's Department of Development and Planning concluded that "the main results are that bicycle paths impair traffic safety and this is mainly due to more accidents at intersections." This, however, may be due to an overall increase in bicycle traffic, another consequence of the installation of segregated cycling facilities. See also Bikeability Cyclecraft References Further reading Effective Cycling by John Forester, (First edition, 1976; Sixth edition, MIT Press, 1992, ), 7th (2012) External links John Forester's website "A Comparative Analysis of Bicycle Lanes Versus Wide Curb Lanes: Final Report", FHWA-RD-99-034. John Forester's review of the analysis Bicycle Transportation Institute John S. Allen's bicycling pages, including Street Smarts LAB's Bike Ed program, based on the principles of Effective Cycling Vehicular cycling Cycling safety