Driver's license extension for one year; highways are high-grade highways.
The "Highway Engineering Technical Standards" of the Ministry of Transport of China stipulates that expressways refer to "highways that can adapt to the annual average day and night passenger car traffic volume of more than 25,000 vehicles, are dedicated to high-speed driving in separate lanes, and have all controlled access."
Although highways are named differently in different countries, they all refer specifically to highways with 4 or more lanes (inclusive), two-way separation, fully controlled entrances and exits, and all grade-level intersections.
In addition, in many countries, some direct arterial lines with controlled entrances and exits, but not all grade-level intersections, are also called expressways.
Generally speaking, highways can adapt to speeds of 120 kilometers/hour or higher (usually 120 kilometers/hour), and the road surface has a width of 4 or more lanes (inclusive).
Set up a separation zone in the middle, use high-grade asphalt concrete or cement concrete pavement, and be equipped with complete signs, markings, signals and lighting devices; pedestrians and non-motor vehicles are prohibited from walking on the road, and use grade-level intersections, pedestrian overpasses or bridges with other lines.
Pass authentically.
It can be seen from the definition that generally speaking, expressways should meet the following four conditions: (1) only for high-speed driving of cars; (2) equipped with multiple lanes and a central separation zone to completely separate the traffic; (3) equipped with
There are three-dimensional intersections; (4) The entire road is closed, entrances and exits are controlled, and cars are only allowed to enter and exit the highway at some specified three-dimensional intersections.
In the 1930s, some Western countries began to construct highways. Since the 1960s, highways in various countries around the world have developed rapidly.
Highways are an inevitable product of economic development [4].
First, expressways adapt to the development of industrialization and urbanization.
Cities are gathering places of industry and population. The growth of automobiles in cities is much faster than that in rural areas. They have become the gathering centers of automobiles. Therefore, the construction of highways mostly starts from urban ring roads, radial roads and busy traffic sections, and gradually becomes high-speed highways.
Highways are the backbone of urban transportation; secondly, the development of automobile technology puts forward objective requirements for highway construction.
At present, automobiles have become an indispensable means of transportation for human society, so they require the cooperation of highways and other infrastructure. Lightening and load-carrying are two major development trends. The former requires speed and the latter requires carrying capacity, and highways can just
Make the two organically combine.