Sir Norman Foster has put forth plans for a 135-mile network of elevated cycle pathways dubbed "SkyCycle". In addition to its enormous price tag, the scheme faces practical concerns from cycling advocates.
"Plans for a network of cycle pathways high above the streets of London have been unveiled by one of the world's most prominent architects," reports Sam Webb. "SkyCycle is a 135-mile network of roads that would be constructed above existing suburban rail lines to create new cycle routes throughout the capital and has been developed by cycling enthusiast Sir Norman Foster, who designed St Mary Axe, known as 'The Gherkin', and the new Wembley Stadium."
The proposal, which has been in the works since 2012, comes after a spate of fatal accidents in November involving cyclists.
"To improve the quality of life for all in London and to encourage a new generation of cyclists, we have to make it safe," said Foster. "'However, the greatest barrier to segregating cars and cyclists is the physical constraint of London’s streets, where space is already at a premium."
"SkyCycle is a lateral approach to finding space in a congested city. By using the corridors above the suburban railways, we could create a world-class network of safe, car-free cycle routes that are ideally located for commuters."

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Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
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Economic & Planning Systems, Inc.
UCLA Lewis Center for Regional Policy Studies
Mpact (formerly Rail~Volution)
Chaddick Institute at DePaul University
City of Piedmont, CA
Great Falls Development Authority, Inc.
HUDs Office of Policy Development and Research