Ambulances wait outside of the entrance of Laoximen Station of Metro Line 10 after a subway collision Tuesday, Sept. 27, 2011. A Shanghai subway train rear-ended another Tuesday, injuring more than 40... more 
Ambulances wait outside of the entrance of Laoximen Station of Metro Line 10 after a subway collision Tuesday, Sept. 27, 2011. A Shanghai subway train rear-ended another Tuesday, injuring more than 40 people in the latest trouble for the rapidly expanded transportation system in China's commercial center.(AP Photo/Eugene Hoshiko) less 
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Associated Press | Photo By Eugene Hoshiko
Tue, Sep 27, 2011 6:41 AM EDT