The 13 European cities with the absolute worst traffic

Traffic is a growing problem in cities worldwide.

Some cities have taken steps to cut congestion, like London, which puts a fee on most vehicles driving in a designated congestion charge zone. But others have yet to find a real solution.

TomTom, a navigation and mapping company, has ranked the European cities with the worst traffic. The company collected data over a nine-year time space and gave each city a congestion score out of 100. The score shows how much extra travel time it takes to get around a particular city.

Scroll down to see which European cities have the worst traffic: