Chengdu is a central city in the Sichuan-province of China. The city has 5 million inhabitants and is the transport hub of a region consisting of 15 million people. Since 2012 a number of fare-free bus lines have opened, to this date the number is 44 lines. They have also implemented free public transportation between 5-7 AM and many local buses has also abolished fares. This lecture was a little bit hard to understand, very technical, with diagrams and maybe it required knowledge of the city itself. But Shi Tao, vice chairman of the Chengdu Bus Group, concluded that the zero-fare experiment was successful and would be implemented on yet more buslines. Taken from this report