Locals participate in a pedestrian trip to mark the Car-Free Day in Changchun, capital of northeast China's Jilin Province, on September 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. [Xinhua]

People walk past a poster advocating the idea of the Car-Free Day in Fuzhou, capital of southeast China's Fujian Province, on September 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. [Xinhua]