Elders ride bicycles as they participate in a campaign to promote the idea of the Car-Free Day in Hohhot, capital of north China's Inner Mongolia Autonomous Region, on Sept. 22, 2009. This Tuesday is China's third Car-Free Day and people are encouraged to walk, ride bikes or take buses instead of driving their cars. [Photo: Xinhua]
Locals ride bicycles during a public awareness event to mark the Car-Free Day in Haikou, capital of south China's Hainan Province, on Sept. 22, 2009. This Tuesday is China's third Car-Free Day and people are encouraged to walk, ride bikes or take buses instead of driving their cars. [Photo: Xinhua]
Locals participate in a pedestrian trip to mark the Car-Free Day in Changchun, capital of northeast China's Jilin Province, on Sept. 22, 2009. This Tuesday is China's third Car-Free Day and people are encouraged to walk, ride bikes or take buses instead of driving their cars. [Photo: Xinhua]
People walk past a poster advocating the idea of the Car-Free Day in Fuzhou, capital of southeast China's Fujian Province, on Sept. 22, 2009. This Tuesday is China's third Car-Free Day and people are encouraged to walk, ride bikes or take buses instead of driving their cars. [Photo: Xinhua]
