What's the difference between National Highway and expressway?

The difference between national highway and expressway:

1. Different naming methods.

2. The signs are different.

3. Different coverage.

4. The criteria for division are different.

5. The driving speed is different.

Specific differences between national highway and expressway;

1. The naming method is different: national highways are generally named after G plus three digits, such as G32 1 national highway, while expressway is generally named after G plus 1 digit, G plus two digits and G plus four digits, which is different from national highways with three digits. For example, the G2 expressway from Beijing to Shanghai, the G20 expressway from Qingdao to Yinchuan, and the G42 1 1 expressway from Nanjing to Wuhu.

2. Different signs: the national road signs belong to the red background, while the expressway signs are on the green background.

3. Different coverage: National highways mainly represent the nature of highways, that is, national trunk highways. While expressway represents the highway grade, so some expressway are first-class highways and some are second-class highways.

4. Different classification standards: National highways are classified according to the importance of road network planning, while expressway is classified according to the technical grade of road structure. The classification standards of different national roads depend on the importance of roads in road network planning, such as national roads, provincial roads and county roads. Expressway is divided into expressway, first-class highway, second-class highway, third-class highway and other highways according to the technical grade of road structure.

5. Different driving speeds: the speed of national highway is 60-80km/h, and that of expressway is 60-120km/h..

National roads usually need to meet the standards of secondary roads or above. However, in real life, expressway is usually the road above the provincial highway. Therefore, at present, expressway basically takes the national high-speed numbered road signs with white characters on the red background as banners, or the provincial high-speed numbered road signs with black characters on the yellow background as banners, which essentially refers to the national highways and provincial highways in expressway network.

Highway grades in China have different classification angles:

1. The function level is mainly divided according to the traffic volume. According to the use task, function and flow direction of highways, Chinese mainland divides highways into expressway, first-class highways, second-class highways, third-class highways and fourth-class highways, totaling * * * (digital grading is a traditional grading system, while expressway is new). Among them, expressway and the first-class highway are high-grade highways, the second-class highway is in the middle, and the third and fourth-class highways are low-grade highways.

2 administrative levels are divided into national roads, provincial roads and county roads.

3. The classification of fast and slow characters is expressway, expressway and ordinary highway.

highway

Expressway is a kind of expressway with complete access control, which is designed for cars to drive at high speed in separate lanes. It is mainly used to connect politically, economically and culturally important cities and regions, and is the skeleton of the national highway trunk network. (Four lanes) Generally, the average annual traffic volume per day and night is more than 25,000 vehicles.

arterial road

The first-class highway is a highway for cars to travel in different directions and lanes, some of which control access and some of which communicate. It mainly connects important political and economic centers and leads to key industrial and mining areas. It is a national trunk highway. Four-lane first-class highways can generally adapt to the design of converting various cars into passenger cars in the long run, and the annual average day and night traffic volume is 15000 ~ 30000 vehicles; The six-lane first-class highway can generally adapt to the design of converting various cars into passenger cars in the long run, with an average annual day and night traffic volume of 25,000 ~ 55,000 vehicles.

second-class highway

Secondary roads are main roads connecting political and economic centers or large industrial and mining areas, or suburban roads with heavy traffic. Generally, it can adapt to all kinds of vehicles, and secondary roads can generally adapt to the long-term design life of converting all kinds of vehicles into medium-sized trucks. The annual average day and night traffic volume is 3000 ~ 7500 vehicles.

tertiary highway

The third-class highway is a general trunk highway connecting counties and towns above the county level. Generally, it can adapt to all kinds of vehicles, and the third-class highway can generally adapt to the long-term design of converting all kinds of vehicles into medium-sized trucks. The annual average day and night traffic volume is 1000 ~ 4000 vehicles. Four-grade highway

Class IV highway is a branch road connecting counties, townships and villages. Generally, it can adapt to all kinds of vehicles, and the fourth-class highway can generally adapt to the long-term design life of all kinds of vehicles converted into medium-sized trucks: the annual average day and night traffic volume is below 1500 vehicles, with two lanes; There are less than 200 cars in a single lane. Bingchacha Highway was transformed from Grade 4 to Grade 3, which used to be an old rural mountain road.

Classification of highway management grades

According to the administrative level, highways can be divided into five grades: national highway, provincial highway, county road, township road (referred to as national, provincial and township road) and special highway. General national and provincial roads are called trunk lines, and county and township roads are called branch lines.

National highway

National highway refers to the main trunk highways with national political and economic significance, including important international highways, national defense highways, highways connecting the capital with the capitals of provinces, autonomous regions and municipalities directly under the Central Government, and highways connecting major economic centers, port hubs, commodity production bases and strategic locations. The inter-provincial expressway in the national highway is responsible for the construction, maintenance and management by the specialized agencies approved by the Ministry of Communications. There are many national highways, all of which are national trunk highways. For example, National Highway 3 18 runs from Shanghai to Lhasa to Shigatse and leads to Mount Everest, which is the backbone of the southern line of Sichuan-Tibet Highway, while National Highway 2 19 is the new Tibet Highway.

provincial highway

Provincial highway refers to the highway trunk line which has the political and economic significance of the whole province (autonomous region or municipality directly under the Central Government) and is constructed, maintained and managed by the highway department of this province (autonomous region or municipality directly under the Central Government). Xiandao

County road refers to the highway that has the political and economic significance of the county (county-level city), connects the county and the main townships (towns) and major commodity production distribution centers in the county, and the inter-county highway that does not belong to the national highway or provincial highway. County roads are built, maintained and managed by county and municipal highway departments.

Township road

Township roads refer to roads that mainly serve the economy, culture and administration of townships (towns) and villages, as well as roads that are not connected with the outside world at or above the county level. Township roads are built, maintained and managed by the people's government.

Accommodation highway

Special roads refer to roads that are exclusively or mainly used for factories, mines, forest areas, farms, oil fields, tourist areas, military sites and other external contacts. Dedicated roads are built, maintained and managed by specialized units. Can also be entrusted to the local highway department construction, maintenance and management.

legal ground

People's Republic of China (PRC) Highway Law

Article 6 Highways are divided into national roads, provincial roads, county roads and township roads according to their status in the road network, and expressway, Class I highways, Class II highways, Class III highways and Class IV highways according to their technical levels. The specific division standard shall be stipulated by the transportation department of the State Council.

New highways should meet the technical grade requirements. Existing roads that do not meet the requirements of the minimum technical grade shall take measures to gradually transform them into roads that meet the requirements of the technical grade.

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