Copenhagen now has more bikes than cars - here are the 5 most bike-friendly cities in the world

Cities are getting more congested.

In the US, the average commuter spends 42 hours stuck in traffic every year, according to a report by the Texas Transportation Institute.

But US cities aren't even close to the most congested. Navigation company TomTom unsurprisingly ranked Los Angeles the most congested city in the US, which ranks 12th worldwide.

But more cities are starting to support biking to decrease congestion and reduce greenhouse gas emissions. Copenhagen now has more bikes than cars for the first time since 1970, which was the year authorities began collecting data on the two modes of transportation, according to the World Economic Forum. In the last year, 265,700 bikes made their way into the city compared to 252,600 cars.

Copenhagenize Design Company, an urban design consultancy company based in Copenhagen and Brussels, puts together a bi-annual index listing the most bike-friendly cities in the world. Copenhagenize evaluated 122 cities with a regional population topping 600,000 people. Scroll down for its 2015 ranking: