The August 2010 traffic meltdown is an extreme case. But some of China's urban centers do face persistent problems with traffic. Both Beijing and Shenzhen, an industrial city in southern China, occupy two of the top three places on IBM's 2011 "Commuter Pain Index."
The report found that "huge numbers of drivers" in the two cities "have simply turned around and gone home rather than dealing with the frustration of their intended journey."
By Charles Riley @CRrileyCNN - Last updated October 07 2012 10:14 PM ET