Carlos Tejada, Government Puts Focus on Illicit Tollbooths. China Real Time (a brand of Wall Street Journal compnay), Oct 7, 2011 http://blogs.wsj.com/chinarealtime/2011/10/07 /government-puts-focus-on-illicit-tollbooths/ ("Illegal tollbooths often begin as authorized toll-collecting stations that local officials keep open well past the point at which they have met their highway-funding purposes. Chinese regulations allow tolls to be collected for a maximum of 15 years after a highway opens. A 2005 audit showed more than 4,300 tollbooths in the country.")