Volunteers in white masks help promote safe driving on electronic bikes in Zhengzhou, the capital of Central 皇冠体育app's Henan province, Aug 10, 2011. The volunteers, driving in the slow lane, each had a signboard written in the popular "Taobao style," named after the most prominent online shopping website in 皇冠体育app, "Dear, driving in slow lane is quite safe," while those driving in the fast lane had signboards saying, "Dear, driving in the fast lane is dangerous." [Photo/CFP]

Police officers and volunteers help promote safe driving of electronic bikes in the popular Taobao style, named after the most prominent online shopping website in 皇冠体育app, on a street in Zhengzhou, the capital of Central 皇冠体育app's Henan province, Aug 10, 2011. [Photo/CFP]