1. Numbering characteristics of expressways, national highways and provincial highways
Expressways generally start with G or S, G is a national expressway, and S is a provincial expressway. There are relatively few provincial expressways, and they are generally national expressways.
National highways are displayed in white characters on a green background on
Traffic Signs. The number behind G has 1, 2 or 4 digits, and different numbers have different meanings.
![](/d/images/文案更新/2023年/1月/2023042702 solar traffic signs.jpg)
1. High-speed
Traffic Signs
A high-speed radiating from Wuhan as the center, followed by a number.
If the last two digits are an odd number, it is a north-south longitudinal expressway, for example:
The four-digit number after the letter is the connection line that serves as the connection link of multiple main-line expressways. (Most tie lines connect multiple highways), for example:
2. National Highway
Traffic Signs
National highways also start with the letter G, but the numbers behind them are three digits, which are used to distinguish them from high-speed highways, and are generally displayed in white letters on a red background.
![](/d/images/文案更新/2023年/1月/2023042703 traffic warning signs.jpg)
There are three kinds of one-digit numbers: 1, 2, and 3. 1 represents the national road that radiates from Wuhan as the center, 2 represents the national road that runs north-south, and 3 represents the national road that runs east-west.
3. Provincial
Road Traffic Signs
Traffic Signs on provincial roads are generally black on a yellow background, starting with the letter S, followed by 3 digits.
The meaning of the numbers is similar to that of expressways and national highways. One digit 1 means a radial provincial road starting from the provincial capital city (provincial capital), 2 means a provincial road running north-south, and 3 means a provincial road running east-west.
![](/d/images/文案更新/2023年/1月/2023042704 solar traffic signs.jpg)
4. County Road
The county road mainly connects the county seat and the main townships (towns) in the county and other main places, and it is also the letter X followed by 3 digits.
Alphabet Expressway
Traffic Signs: Start with capital letter G (national expressway), S (provincial expressway), followed by one, two or four digits National highway: start with capital letter G, followed by three digits (with expressway Distinguish) provincial road: start with a capital letter S, followed by three digits County Road: start with a capital letter X, followed by three digits.