It was the early '80s when Copenhagen first set out to become a haven for cyclists, and in the decades since more than 200 miles of cycle lane have been built in the city. The latest addition – named the Cykelslangen – adds just 721 feet, but it's one of the most exciting.

Congestion in cities is a global problem. There are roughly 4 million vehicles in Bangalore, and the average worker in London spends around 227 hours a year commuting. Using crowdsourced data, Urban Engines is helping cities to become smarter, less congested and more efficient.

Many claim that cycling makes people happier and healthier and cities greener, and a study in New Zealand shows that for every dollar spent on building separated bike lanes, cities could save as much as $24 thanks to lower healthcare costs, less pollution and traffic.

France’s transport ministry has announced a new initiative to get people out of their cars and onto their bikes. Employers have pledged to pay their staff 25 cents for every kilometre spent commuting on two wheels. But do financial incentives actually change behaviour?