Regulations of People's Republic of China (PRC) Municipality on the Administration of Toll Roads
Article 12 The establishment of toll stations on toll roads shall be examined and approved by the people's governments of provinces, autonomous regions and municipalities directly under the Central Government in accordance with the following provisions: (1) expressway and other closed toll roads shall not have toll stations on the main lines except the entrances and exits at both ends. However, it is really necessary to set up toll stations between provinces, autonomous regions and municipalities directly under the Central Government. (two) on the same main line of the non-closed toll road, the distance between adjacent toll stations shall not be less than 50 kilometers.
Thirteenth expressway and other closed toll roads should implement computer network toll collection, reduce toll stations and improve traffic efficiency. The specific measures for network charging shall be formulated by the transportation department of the State Council in conjunction with the relevant departments of the State Council.