A train leaves the platform at a subway station in Beijing, capital of China, July 22, 2008. More citizens and visitors in Beijing have taken the subway since July 20 when the city imposed controls to halve the number of vehicles on the roads for the Olympic Games, to be opened on August 8. (Xinhua Photo)
Passengers buy tickets at an automatic ticket machine at Tian'anmen east subway station in Beijing, capital of China, July 22, 2008.(Xinhua Photo)
Passengers take a subway train in Beijing, capital of China, July 22, 2008. More citizens and visitors in Beijing have taken the subway since July 20 when the city imposed controls to halve the number of vehicles on the roads for the Olympic Games, to be opened on August 8. (Xinhua Photo)
Passengers wait on the platform at a subway station in Beijing, capital of China, July 22, 2008.(Xinhua Photo)
