13. Buenos Aires
The Argentinian capital has a reputation for bumper-to-bumper traffic, and makes the Castrol study’s top ten list of cities with the worst stop-and-go gridlock. A system of bike lanes and bike share schemes have recently been put in place to try to encourage less driving in this congested-to-maximum-capacity city.

14. Atlanta
When a rare snow dump fell over Atlanta in January 2014, drivers didn’t know how to cope with the slick conditions. It became a road to nowhere as a million drivers came to a complete stop for almost 12 hours. The chaos even resulted in one woman giving birth in the midst of this chaotic snow jam.

15. Mexico City
In just four decades, Mexico City’s population has exploded from about five to 22 million people. It’s valley setting is like a smog trap, and unfortunately the air pollution is a serious concern you can see, smell and taste. In an attempt to cut down on congestion, people with vehicles are only permitted to drive on certain days of the week, with serious fines if one violates the restriction.
