Context Controversy
Some detractors argue that one must be careful in interpreting the operation of segregated cycle facilities across different designs and contexts; what works for the Netherlands won't necessarily work elsewhere. Proponents argue that segregated cycle facilities have been implemented and are both popular and safe.
The Netherlands, detractors argue, is a flat country and Dutch town planning keeps cycling distances short. The typical Dutch town bike or "granny bike" has no gears or a three-speed hub gear and back pedal brakes. In countries with different geographies and cycling cultures, people may have more bicycles with a wider range of gears and cyclists that travel more quickly, for example in North America. Sports cyclists can travel even faster: with tailwinds or downhill gradients, some cyclists may exceed 50 km/h (30 mph). While a sidepath system may work for slower cyclists, detractors argue, they might not work for cyclists using faster bicycle types who cannot use such a system safely at their higher normal cycling speeds. However, this is contradicted by members of the Royal Dutch Cycling Union, who state that Dutch competitive cyclists have no problems with training in the Netherlands. The Danish Roads Directorate state that the cycle track system "functions best when cyclists travel at relatively low speeds" but what is meant by 'relatively low speeds' is not made clear. There are instances where cycle tracks / sidepaths can accommodate fast cycling as evidenced in this video of a velomobile on a Dutch cycle track.
As more cycle tracks are built in North American cities, more research is being conducted on the uptake and safety of cycle tracks. North American cities that have recently installed cycle tracks have seen significant growth in cyclists using these roads. It is useful, therefore, to use North American examples of cycle tracks/side paths and compare them to similar roads used by cyclists. This will provide better data using cyclists on similar terrain and presumably similar bicycles and experience.
Cycling activists in favour of vehicular cycling have opposed cycle tracks and paths on the principle that they might be created with the "fast cyclist type" in mind. The UK’s Sustrans guidelines for the National Cycle Network are based on recreational use with a design user who is an unaccompanied twelve-year-old. The Dublin Transportation Office has advertised their cycle facilities as being based on an unaccompanied ten-year-old design user. This raises the issue of what happens if different cyclist types find themselves forced onto such devices either by legal coercion or as a result of motorist aggression. This issue is captured in a 1996 review of the Sustrans approach from the Proceedings of the Institution of Civil Engineers.
The fast cycle commuter must not be driven off the highway onto a route that is designed for a 12-year-old or a novice on a leisure trip, because if that happens, the whole attempt to enlarge the use of the bicycle will have failed
Read more about this topic: Segregated Cycle Facilities
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