Standard load of highway classification

highway grading standards how are highways graded?

1. The expressway can adapt to the annual average day and night traffic volume of more than 25, vehicles.

it has particularly important political and economic significance, and it is specially designed for cars to drive at high speed and continuously, and all roads are provided with interchanges and controlled access, and long-distance transportation is the main way. 2. The first-class highway can adapt to the annual average traffic volume of 5~25 vehicles day and night, connecting important political and economic centers, leading to important industrial and mining areas, allowing cars to drive in separate lanes, partially controlling access and partially setting up interchanges.

3. Secondary roads can adapt to the annual average day and night traffic volume of 2~5 vehicles converted into medium-sized trucks by various vehicles, connecting political and economic centers or large industrial and mining areas and suburban roads with heavy transportation. It's two-way and four lanes.

4. Class-III highways are suitable for general trunk highways which are converted into medium-sized trucks with an annual average day and night traffic volume of less than 2, vehicles and communicate with counties or counties and cities. Two-lane, generally 8.5 meters wide in local areas and 7.5 meters in hilly areas.

Grade 5 and Grade 4 highways can adapt to the annual average day-and-night traffic volume converted into medium-sized trucks by various vehicles below 2, and connect the feeder roads between counties, townships and towns. For example, the old road in Yunnan-Tibet Xintong Road, Bingchacha Highway, is 3 to 4.5 meters wide, based on sand, and is a simple highway.

Extended information: In Chinese mainland, the authoritative documents of highway specialty did not use the three-speed method to classify highway grades, because the speed classification only refers to speed and lacks sufficient and rigorous standards. However, there are still many highway enthusiasts and related professionals in China who divide highways into three grades: high speed, fast speed and low speed.

expressway: the speed limit is 1km/h-14km/h. Expressway: the speed limit is 6 km/h-1 km/h.

in addition, the speed standard of urban expressway is 6km/h-1km/h, and the structural design and technical standard of urban expressway are basically between ordinary highway and expressway, so the speed limit and other attributes of expressway mostly come from the relevant design regulations of urban expressway. Baidu Encyclopedia-Highway.

how are highway grades classified?

Highway grades are classified according to three methods: functional type, administrative type, and fast and slow words, not according to road width and access place.

1. Functional grades are mainly divided according to traffic volume. According to the use tasks, functions and traffic flow of highways, Chinese mainland divides highways into five grades: expressways, first-class highways, second-class highways, third-class highways and fourth-class highways (digital grading is a traditional grade system, and expressways are new). Among them, the expressway and the first class are high-grade highways, the second class is in the middle, and the third and fourth classes are low-grade.

2. Administrative grades are divided into national roads, provincial roads and county roads. 3. The classification of fast and slow words is expressway, expressway and ordinary highway.

Extended information: Difference from roads: Modern roads refer to roads connecting cities, urban and rural areas, rural areas and industrial and mining bases, which are built according to national technical standards and accepted by highway authorities, including expressways, first-class highways, second-class highways, third-class highways and fourth-class highways, but not including fields or rural areas. It is mainly used for automobile driving and has certain technical standards and facilities.

roads are engineering facilities for all kinds of vehicles (trackless) and pedestrians. According to its use characteristics, it can be divided into urban roads, highways, factory and mine roads, forest highway and rural roads.

Among them, urban roads refer to public roads within the urban planning area, and generally include sidewalks, carriageways and traffic isolation facilities. Including urban expressways, urban main roads, urban secondary roads and urban branch roads.

Reference: Highway Grade-Baidu Encyclopedia.

national standard or code number of highway grade? Please look at the problem clearly. What I need is to determine the highway grade according to the function, task and traffic volume of the highway. The highway grades in different countries are generally similar, but their classification indicators are not exactly the same. Chinese mainland divides highways into five grades: expressway, first-class highway, second-class highway, third-class highway and fourth-class highway. I Expressway is specially designed for cars to drive in different directions and lanes. Multi-lane highways with full access control are mainly used to connect economically, politically and culturally important cities and regions. It is the backbone of the national highway trunk network. According to the long-term design life of small passenger cars converted from various vehicles, the annual average day and night traffic volume is:-25,-55, vehicles with four lanes-45,-8, vehicles with six lanes-6,-1, vehicles with eight lanes, which are used for cars to drive in different directions and in different lanes, and partly control access and partly interchange. Mainly, Leading to key industrial and mining areas, it is a national trunk highway. According to the long-term design life of small passenger cars converted from various vehicles, the annual average day and night traffic volume is:-15, ~ 3, vehicles with four lanes-25, ~ 55, vehicles with six lanes, which are trunk highways connecting economic and political centers or large industrial and mining areas. Or suburban roads with busy transportation. The annual average day and night traffic volume converted into minibuses according to the long-term design life of various vehicles: —— 5, ~ 15, vehicles Ⅳ Class III highway connects the general trunk roads of counties and towns above the county level. The annual average day and night traffic volume converted into minibuses according to the long-term design life of various vehicles: ——— 2, ~ 6, vehicles Ⅴ Class IV highway connects counties, townships, Branch roads in villages and other places. According to the prospective design life of various vehicles converted into small passenger cars, the annual average day and night traffic volume:-less than 2, vehicles in two lanes-less than 4 vehicles in one lane. The prospective design life of highways at all levels: 2 years for expressways and first-class highways; The secondary highway is 15 years; The third-class highway is 1 years; Four-grade highway is generally 1 years, which can be adjusted according to the actual situation. Hope to adopt it! Thank you. Please let me know if there is anything I can do for you.

what are the highway grades in China? What is the standard?

Highway grades are classified according to the tasks, functions and flow of highways. Chinese mainland divides highways into five grades: expressway, first-class highway, second-class highway, third-class highway and fourth-class highway.

the first-class highway is a road for cars to drive in different directions and lanes, which can generally adapt to the long-term design of converting various cars into passenger cars. The annual average day-and-night traffic volume is 15~3 vehicles.

Secondary roads can generally adapt to the long-term design life of converting various vehicles into medium-sized trucks, and the annual average day and night traffic volume is 3, ~ 7,5 vehicles.

Class III highways are generally suitable for converting various vehicles into medium-sized trucks. The annual average day and night traffic volume is 1, ~ 4, vehicles.

Class-4 highways can generally adapt to the long-term design period of converting various vehicles into medium-sized trucks. The annual average day and night traffic volume is: less than 1,5 vehicles in two lanes; Less than 2 vehicles in a single lane.

the selection of highway grade is comprehensively determined according to the planning of highway network, the use task, function and prospective traffic volume of highway; On the same highway, different car fatigue numbers or different highway grades can be adopted according to the traffic volume and other conditions.

Service life of highway:

Expressway and first-class highway are 2 years;

the secondary road is 15 years;

the third-class highway is 1 years;

Class-4 highways are generally 1 years.

How to define the road grade according to the road width? For example, a road in the city

The selection of the road grade is comprehensively determined according to the planning of the road network, the use tasks, functions and prospective traffic volume of the road; On the same highway, different car fatigue numbers or different highway grades can be adopted according to the traffic volume and other conditions.

highways with more than two grades are called high-grade highways. Highways are divided into five grades according to their tasks, functions and adaptive traffic volume.

Expressway: It is of great political and economic significance. It is a trunk road specially designed for cars to drive in different directions and lanes, and all the access is controlled.

it is divided into four-lane, six-lane and eight-lane expressways. Generally, it can adapt to the annual average day and night traffic volume of more than 25, cars converted into passenger cars.

First-class highway: a highway connecting important political and economic centers, leading to key industrial and mining areas, ports and airports, which is dedicated to separate lanes for cars and partially controlled access. Generally speaking, it can adapt to the annual average day and night traffic volume of passenger cars converted from various cars is 15,-3,.

secondary highway: a highway connecting political and economic centers or large mining areas, ports, airports and other places. Generally speaking, it can adapt to the conversion of various vehicles into medium-sized trucks, and the annual average day and night traffic volume is 3-75 vehicles.

Class III highway: a highway connecting cities above the county level. Generally, it can be adapted to convert various vehicles into medium-sized trucks, and the annual average day and night traffic volume is 1-4 vehicles.

class iv highway: a highway connecting counties, townships (towns) and villages. Generally, it can be adapted to convert various vehicles into medium-sized trucks. The annual average day and night traffic volume is less than 1,5 vehicles in two lanes and less than 2 vehicles in one lane.

how are highways classified? What are the specific standards?

classification of highways

1. classification by administrative levels

highways can be divided into five levels according to administrative levels: national highways, provincial highways, county highways and township highways (referred to as national, provincial and township highways for short) and special highways. Generally, national highways and provincial highways are called trunk lines, and county roads and township roads are called branch lines.

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 highways in national highways are built, maintained and managed by specialized agencies approved by the Ministry of Communications.

a provincial highway refers to a highway trunk line that has the political and economic significance of the whole province (autonomous region or municipality directly under the central government) and is built, maintained and managed by the highway department of the province (autonomous region or municipality directly under the central government).

county roads refer to the roads that have the political and economic significance of the county (county-level city), connect the county and the main townships (towns) within the county, and the main commodity production and distribution centers, as well as the inter-county roads that do not belong to national highways or provincial highways. County roads are built, maintained and managed by county and municipal highway departments.

township roads refer to roads that mainly serve the economy, culture and administration of townships (towns) and villages, as well as roads that do not belong to highways above the county level and communicate between townships and between townships and the outside. Township roads are built, maintained and managed by the people.

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

2. Classification of traffic volume according to usage task, function and adaptation

According to China's current Technical Standard for Highway Engineering (JTJ1-1997), highways are divided into five grades according to usage task, function and adaptation traffic volume: expressway, first-class highway, second-class highway, third-class highway and fourth-class highway:

1. Expressway is driven in separate lanes for cars only.

the four-lane expressway should be able to adapt to the annual average daily traffic volume of 25, ~ 55, vehicles converted from various cars into passenger cars.

the six-lane expressway should be able to adapt to the annual average daily traffic volume of 45, ~ 8, cars converted into passenger cars.

the eight-lane expressway should be able to adapt to the annual average daily traffic volume of 6, ~ 1, cars converted into passenger cars.

2. the first-class highway is a multi-lane highway for cars to drive in different directions and lanes, and access can be controlled according to needs.

the four-lane first-class highway should be able to adapt to the annual average daily traffic volume of 15, ~ 3, vehicles converted into passenger cars.

the six-lane first-class highway should be able to adapt to the annual average daily traffic volume of 25, ~ 55, vehicles converted from various cars into passenger cars.

3. The secondary road is a two-lane road for cars.

generally, it can adapt to the traffic volume of 3~75 medium-sized trucks every day and night.

4. Class III highway is a two-lane highway mainly for cars.

generally, it can adapt to the traffic volume of 1~4 medium-sized trucks every day and night.

Grade 5 and Grade 4 highways are two-lane or one-lane highways mainly used for automobiles.

Two-lane Class IV highway can accommodate the traffic volume of medium-sized trucks below 1,5 vehicles per day and night.

One-lane Class IV highway can accommodate the traffic volume of medium-sized trucks of less than 2 vehicles per night.

how are highways classified?

highways are divided into five grades: expressway, first-class highway, second-class highway, third-class highway and fourth-class highway according to their tasks, functions and adaptive traffic volume. Expressway is a trunk road dedicated for cars to drive in different directions and lanes, and all the access is controlled. Four-lane expressway can generally adapt to the long-term design life of converting various cars into passenger cars, and the annual average day and night traffic volume is 25~55 vehicles; The six-lane expressway can generally adapt to the long-term design life of converting various cars into passenger cars, and the annual average day and night traffic volume is 45, ~ 8, vehicles; Eight-lane expressway can generally adapt to the long-term design life of 6, ~ 1, vehicles converted into adult buses according to various vehicles. Other highways are trunk highways, distribution highways and local highways except expressways, which are divided into four grades.

the first-class highway is a road for cars to drive in different directions and lanes, which can generally adapt to the long-term design life of converting various cars into passenger cars. The annual average day-and-night traffic volume is 15~3 vehicles. Secondary roads can generally adapt to the long-term design life of converting various vehicles into medium-sized trucks, and the annual average day and night traffic volume is 3~75 vehicles. Three-grade highways can generally adapt to the long-term design life of converting various vehicles into medium-sized trucks, and the annual average day and night traffic volume is 1~4 vehicles. Class-4 highways can generally adapt to the long-term design life of converting various vehicles into medium-sized trucks. The annual average day and night traffic volume is: less than 1,5 vehicles in two lanes; Less than 2 vehicles in a single lane. The selection of highway grade should be based on the planning of highway network, starting from the overall situation, and comprehensively determined according to the use task, function and prospective traffic volume of highway. For a highway, different vehicle fatigue numbers or different highway grades can be used in sections according to traffic volume and other conditions. Long-term design of highways at all levels: 2 years for expressways and first-class highways; The secondary highway is 15 years; three-level