The safety of converted tricycles has been called into question after a series of photos showing kids jammed into the "school coaches". This image shows the front of a primary school at the end of the school hours in Foluo town, Dongle county in South China's Hainan province, Sept 4, 2012. The converted tricycles are often overloaded and the children have no protection, raising concerns about their safety. [Luo Yunfei / Asianewsphoto]

Eight kids huddle in a tricycle after school in Foluo town, Dongle county in South China's Hainan province, Sept 4, 2012. [Luo Yunfei / Asianewsphoto]