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Википедия писал(а): For urban roads with many junctions, accident analysis suggests that segregated cycling facilities are likely to produce a net increase in the number of collisions. These conclusions are supported by the experience of countries that have implemented segregated cycling facilities. In the U.S.[35], UK[36], Germany, Sweden[37], Denmark[38], Canada [39] and Finland[40], it has been found that cycling on roadside urban cycle tracks/sidepaths results in significant, up to 12 fold, increases in the rate of car/bicycle collisions. At a 1990 European conference on cycling, the term Russian roulette was openly used to describe the use of roadside cycle paths.[41]

In Helsinki, research has shown that cyclists are actually safer cycling on the roads mixed in with the traffic than they are using that city's 800 km of cycle paths [42]. The Berlin police and Senate conducted studies which led to a similar conclusion in the 1980s [43]. In Berlin 10% of the roads have cycle paths but these produce 75% of fatalities and serious injuries among cyclists [44]. In the UK town of Milton Keynes it has been shown that cyclists using the "off-road" Milton Keynes redway system have, on a per journey basis, a significantly higher rate of fatal car-bicycle collisions than cyclists who simply cycle on the ordinary unsegregated roads[36]. Cycle lanes / bike lanes are less dangerous than cycle paths in urban situations but even well-implemented examples have still been associated with 10% increases in casualty rates.