According to Article 1 19, Item 65438 of the Traffic Safety Law of the People's Republic of China, roads refer to roads, urban roads and places where social motor vehicles are allowed to pass within the jurisdiction of the unit, including public parking lots in the square, and tractor roads are channels for agricultural machinery to enter the site, which are not counted as roads.
At present, expressway in China is divided into four grades. The design speed of the first-class highway is 60-80 km/h, and there are not less than four motor vehicle lanes, each with a width of 3.75 meters, and the width of non-motor vehicle lanes is not less than 6.7 meters.
The design speed of the secondary highway is 40 ~ 60km, and there are not less than 4 motor vehicle lanes, each lane is 3.5m wide, and the width of non-motor vehicle lanes is not less than 5m.
The design speed of Class III highway is 30 ~ 40km/h, and there are not less than two motor vehicle lanes, each with a width of 3.5m, and the width of non-motor vehicle lanes is not less than 3.5m.. ..
The design speed of Class IV road is 30km/h, and there are no less than two motor vehicle lanes, each with a width of 3.5m, and the width of non-motor vehicle lanes is not less than 3.5m.. ..
There are thousands of roads, safety first, don't be drunk and tired, and harm others and yourself.