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The present-day network announced in 2017, termed the 7, 11, 18 Network (also known as the National Trunk Highway System, NTHS), uses one, two or four digits in the G-series numbering system, leaving three-figured G roads as the China National Highways. The new 7, 11, 18 Network is composed of 7 radial expressways leaving Beijing (G1-G7)
China National Highway 318 between Yajiang and Kangding, Sichuan. The building of highways is seen as key to accelerating infrastructure construction. In 2003, completed investment in highway construction was 350 billion yuan and 219 key highway projects progressed, focusing mainly on the five north–south and seven east–west national arterial highways as well as highways in western China ...
Also included is additional data on the length of each country or region's controlled-access highway network (also known as a motorway, expressway, freeway, etc.), designed for high vehicular traffic. Unless otherwise noted, the data is from the United States's Central Intelligence Agency. [1] * indicates Roads in Country/Territory links.
Highways in China, more often than not, refer to China National Highways. The fully controlled-access, multi-lane, divided routes are instead called expressways. As of 2017, there were 5,980,000 km (3,720,000 mi) of highways and 131,000 km (81,000 mi) of expressways in China; both total lengths are the longest in the world.
National Highways; Transport in China; ← G5016: → G55: ... Construction started in March 2010, with a four lane roadbed width of 24.5 meters, a design speed of 80 ...
In the United States, the Interstate Highway standards for the Interstate Highway System use a 12 ft (3.7 m) standard lane width, while narrower lanes are used on lower classification roads. In Europe, laws and road widths vary by country; the minimum widths of lanes are generally between 2.5 to 3.25 m (8.2 to 10.7 ft). [ 13 ]
The Beijing–Hong Kong and Macau Expressway (Chinese: 北京－港澳高速公路), designated as G4 and commonly referred to as the Jinggang'ao Expressway (Chinese: 京港澳高速公路) is a 2,272.65 km (1,412.16 mi)-long expressway [1] that connects the Chinese cities of Beijing and Shenzhen, in Guangdong province, at the border of Hong Kong.
Most municipal express roads are found in the inner districts of Shanghai, including several elevated highways which run directly above surface-level roadways. In Chinese, these expressways are literally termed city high-speed roadways ( Chinese : 城市快速道路 ), and their maximum speed is typically 80 kilometres per hour (50 mph).