Do you still know the way without navigation?
Assuming that the navigation system fails due to a natural phenomenon, I believe that most drivers will become "road idiots", especially in some urban areas with more complex terrain, but I believe that it is still easier than running long distances, once there is no navigation system, running long distances may become the most troublesome thing.
Because the signs on the city roads will clearly indicate the name of the road, or the mileage from a certain landmark, you can always find the destination through these road signs, but the signs of all levels of highways are often named in an alphanumeric way, which looks a bit foggy, so many drivers do not know how to read even if they hold a map.
Let's take a look at science today.
Basic knowledge of road networks
When talking about the knowledge points related to highways, two types of descriptions will be used, such as first, second or third level roads, or national roads, provincial roads, county roads and township roads, which are two concepts that cannot be confused;
What needs to be understood and mastered is the highway standard according to the "administrative level", and the division criteria are as follows.
- National highways, including national highways and ordinary national highways
- Provincial highways, including provincial highways and ordinary provincial highways
- Prefectural roads
- Country Road
- Village Road
- Dedicated roads
National and provincial highways include expressways, and county and rural roads naturally do not need to have expressways.
If you want to drive to other provinces, of course, you need to find national highways, and if you want to drive across cities in the province, you need to find provincial roads, and so on on other highways.
It's important to learn to read letters and numbers on street signs.
After knowing the extent of the extension of the various levels of highways, the next step is to learn to identify the various levels of highways.
- G refers to national highways, national highways with green background signs, ordinary national highways with red bottom signs
- S, refers to the provincial road, the color of the highway sign remains unchanged, and the yellow background sign is used for ordinary provincial roads
- X, which refers to the county road, is marked with a white background
- Y, country road, sign with white background
The color of the letters and signs makes it possible to clearly distinguish the road grade so that you don't go the wrong way.
At the same time, it can also be identified by the combination of letters and numbers, and the highway can have 1 digit, 2 digits, 4 digits after the letters, and there is no three-digit expressway;
Speaking of which, I believe that even novice drivers know how to find the road, but it is still not clear where these roads come from.
Direction of the road
China is a vast country, and there are many highways, whether it is expressways or other roads, there are 36 expressways, 70 national highways, and even more provincial highways and county and township roads.
So it's not enough to learn to distinguish the types of roads, at least to know which direction those roads are going.
This requires a grasp of the "meaning of numbers" and focuses on the numerical meaning of national roads.
- G1, radial path, a network of roads that radiate from Beijing (except G112)
- G2, north-south trending
- G3, east-west
- G0, five vertical and seven horizontal
- etc
If the letter G is followed by two digits, the odd number indicates the north-south direction and the even number indicates the east-west direction, for example, G11 is the north-south direction, and G10 is the east-west direction.
After seeing the G1 street sign, you can find the destination in the forward or reverse direction, and you can naturally find the destination in different directions through the G2/G3 street sign.
The next step is to explain the five vertical and seven horizontal, specifically:
- G010, Tongjiang to Sanya
- G020, Beijing to Fuzhou
- G030, Beijing to Zhuhai
- G040, Erenhot to Hekou
-
G050, Chongqing to Zhanjiang
(The above are five verticals)
- G015, Suifenhe to Manchuria
- G025, Dandong to Lhasa
- G035, Qingdao to Yinchuan
- G045, Lianyungang to Khorgos
- G055, Shanghai to Chengdu
- G065, Shanghai to Ruili
- G075, Hengyang to Kunming
This is the most critical five vertical and seven horizontal road network, the direction and general meaning of the actual highway and provincial highway are also the same as the national highway, the difference is that the starting point of the S1XX highway is the provincial capital, S2XX is the north-south direction, and S3XX is the east-west direction.
With this knowledge in hand, you can find the approximate destination, and then you can find the destination accurately through other highway signs. For example, drive to a certain province through a national highway of G3, and then determine which direction the city is in through the map, and finally determine the direction by looking for the provincial highway to run to the destination.
Epilogue:
The possibility of navigation failure is very small, unless there is a special natural phenomenon, but it is not impossible to do so, and at the same time, the smart car or mobile phone may also malfunction, so when there is no navigation and can not ask for directions, it is necessary to find direction through street signs. The numbers and direction standards of highways at all levels are the same, G1/S1 are radial, G2/S2 are north-south, G3/S3 are east-west, as long as you know how to go up and down to south, left, west, right and east when looking at the map, you will basically not get lost.
Tianhe Auto editor, welcome to retweet the comments