List of NTHS Expressways

National Trunk Highway System
NTHS expressway marker
NTHS expressway in China
System information
Formed:	13 January 2005
Highway names
NTHS:	GXX (green)
System links
Expressways NTHS Primary Auxiliary CNH Transport in China

Primary NTHS Expressways of China are numbered with one- or two-digit designations; the 9X series routes are zonal beltways. Generally, one-digit routes radiate from Beijing, odd-numbered routes run north-south, with lower numbers in the east and higher numbers in the west; even-numbered routes run east-west, with lower numbers in the north and higher numbers in the south.

Their associated branch expressways are follow by a cardinal points (N, S, E, W) and additional digit if repeated starting with 2; for associated auxiliary expressways are follow by two additional digits.