Passengers board a free bus in Chengdu, capital of southwest China's Sichuan Province, Oct. 10, 2012. A total of 44 lines of buses in Chengdu will be free of charge from Oct. 10, 2012 to June 30, 2013, during which a traffic limit according to tail numbers on the licence plate of vehicles will be conducted. (Xinhua/Li Hualiang)
