Guomao Bridge

Lines of cars are pictured during a rush hour traffic jam on Guomao Bridge in Beijing July 11, 2013. Eight more cities in China, the world's biggest auto market, are likely to announce policies restricting new vehicle purchases, an official at the automakers association said, as Beijing tries to control air pollution.

Jason Lee/Reuters

Vehicles queue in rush hour traffic on Guomao Bridge in Beijing on Thursday. Eight more cities in China, the world’s biggest auto market, are likely to announce policies restricting new vehicle purchases, an official at the automakers association said, as Beijing tries to control air pollution