Lord Norman Foster, renowned architect and founder of Foster + Partners, has proposed a massive network of elevated pathways for cyclists in London. Dubbed 'SkyCycle,' the cycling routes would follow London's vast suburban rail network for over 220 kilometers (136 miles), allowing cyclists to traverse the UK's capital without encountering cars or pedestrians.
SkyCycle would consist of a number of routes, most of which would connect with other lines at points. Each route would be able to accommodate 12,000 cyclists per hour.
The network as a whole would serve almost six million people, half of whom live and work within 10 minutes of one of its 200 entrances. As the majority of London's rail network was created in the steam era, the tracks follow the path of least resistance, avoiding steep gradients and making them ideal routes for cycling