ⓘ List of auxiliary NTHS Expressways. List of the Auxiliary National Trunk Highway System Expressways and List of the Branch National Trunk Highway System Express ..

                                     

ⓘ List of auxiliary NTHS Expressways

List of the Auxiliary National Trunk Highway System Expressways and List of the Branch National Trunk Highway System Expressways of China. Auxiliary expressways are followed by two additional digits of their primary expressway and the GXX0X series routes are city beltways. Generally, odd-numbered routes have lower numbers in the east and higher numbers in the west; even-numbered routes have lower numbers in the north and higher numbers in the south.

Before 2017, those codes were followed by a cardinal point N, S, E, W and an additional digit if repeated starting with 2; associated auxiliary expressways were followed by two additional digits, but during the 13th National Peoples Congress in 2017, the SAC decided to standardize those branch expressways to use only two additional digits, and therefore all parallel branches and most of city ring routes are having their codes changed.

In this list under Number column, the gray colored routes are not yet completed.

                                     

1. List of Provincial expressways that wrongly use NTHS-like codes

  • G65W Yanxi Expressway 延西高速
  • G1502 Quanzhou Ring Expressway 泉州绕城高速
  • G1202 Songyuan Ring Expressway 松原绕城高速
  • G1201 Jilin Ring Expressway 吉林绕城高速
  • G0501 Linfen Ring Expressway 临汾绕城高速
  • G2201 Changzhi Ring Expressway 长治绕城高速
  • G1204 Baicheng Ring Expressway 白城绕城高速
  • G1801 Shuozhou Ring Expressway 朔州绕城高速
  • G2002 Yangquan Ring Expressway 阳泉绕城高速
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