Compared to cars, bikes are cheap, quiet and can be used by young and old alike. From London to New York, cities across the world are implementing a range of schemes to get people out of their cars and on their bikes. But how does a city cope with all these new cyclists?
Amsterdam has a long history of cycle schemes, with city authorities saying that 63 percent of the population use their bike daily. It's estimated that there are 800,000 bikes in Amsterdam, compared to 263,000 cars.
But while getting people to change from four wheels to two has its health and environmental advantages, many cities are struggling to keep up with the increasing number of cyclists on the road. As well as keeping cyclists safe from other traffic, finding space to neatly store bikes is another challenge.