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The World Roads Portal

A road is a thoroughfare for the conveyance of traffic that mostly has an improved surface for use by vehicles (motorized and non-motorized) and pedestrians. Unlike streets, whose primary function is to serve as public spaces, the main function of roads is transportation.

There are many types of roads, including parkways, avenues, controlled-access highways (freeways, motorways, and expressways), tollways, interstates, highways, thoroughfares, and local roads.

The primary features of roads include lanes, sidewalks (pavement), roadways (carriageways), medians, shoulders, verges, bike paths (cycle paths), and shared-use paths. (Full article...)

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The A1 in London is an A road in North London. It runs from the London Wall to Bignell's Corner, where it crosses the M25 and becomes the A1(M) motorway, continuing to Edinburgh. (For the road outside London, see the main A1 road article.) The London section passes through 4 London Boroughs: the City of London, Islington, Haringey and Barnet. Whilst the route of the A1 outside London closely follows the historic route of the Great North Road, the London section for the most part does not.

The current route of the London section of the A1 road was (for the most part) designated as such in 1927. It comprises a number of historic streets in central London and the former suburbs of Islington, Holloway and Highgate and long stretches of purpose-built new roads in the outer London borough of Barnet, built to divert traffic away from the congested suburbs of Finchley and High Barnet.

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The following are images from various road-related articles on Wikipedia.

Image 1Replacing the old road with concrete blocks in Bo'ao Road area, Haikou City, Hainan, China (from Road surface)
Image 2Modes of road transport in Dublin, 1929 (from History of road transport)
Image 3Gravel road in Namibia (from Road surface)
Image 4Polymer cement overlaying to change asphalt pavement to brick texture and color to create decorative crosswalk (from Road surface)
Image 5Sacrifices to the Modern Moloch, a 1923 cartoon published in St. Louis Star, criticizing the apparent acceptance by society of increasing automobile-related fatalities (from Road traffic safety)
Image 6A road being resurfaced using a road roller (from Road surface)
Image 7Different layers of road including asphalt layer. The total thickness of a pavement can be measured using granular base equivalency (from Road surface)
Image 8Annual traffic deaths sign over I-95 in Georgia, US, indicating more than three deaths per day (from Road traffic safety)
Image 9Red surfacing for a bicycle lane in the Netherlands (from Road surface)
Image 10Deteriorating asphalt (from Road surface)
Image 11Safe from traffic for cycling along a fully segregated Fietspad, properly designed cycling infrastructure in Amsterdam (from Road traffic safety)
Image 12Map of Roman roads in 125CE (from History of road transport)
Image 13Speed limits in different areas, unusually with only a "recommended" limit (130 km/h) for the Autobahn (from Road traffic safety)
Image 14An orange diamond sign for upcoming roadworks. The worded legend shown here is banned by the 1968 Vienna Convention on Road Signs and Signals, but is allowed in the 2009 Manual on Uniform Traffic Control Devices. (from Roadworks)
Image 15According to Eurostat and European Railway Agency, in European railway mode of transport, there is a fatality risk for passengers and occupants 28 times lower compared with car usage. Based on data by EU-27 member nations, 2008–2010. (from Road traffic safety)
Image 16The Italian Autostrada dei Laghi ("Lakes Motorway"; now parts of the Autostrada A8 and the Autostrada A9), the first controlled-access highway ever built in the world, in 1925, the year following its inauguration. (from History of road transport)
Image 17The schedule of maximum tolls allowed on the Woodstock to Rollright Turnpike Trust on the Great Road to Worcester in 1751 (from History of road transport)
Image 18German roadworks sign. Similar signs are used in other European countries. (from Roadworks)
Image 19Road work in Oulu, Finland (from Roadworks)
Image 20The Autostrada A20 (Italy) with large central median (from Road traffic safety)
Image 21Thomas Telford, the "Colossus of the Roads" in early 19th century Britain (from History of road transport)
Image 22Old Roman road, leading from Jerusalem to Beit Gubrin, adjacent to regional highway 375 in Israel (from Road surface)
Image 23Vehicles experiencing a breakdown or an emergency can stop in the emergency lane; these lanes may themselves present risks to traffic. (from Road traffic safety)
Image 24Brick paving machine (from Road surface)
Image 25Concrete pavers (from Road surface)
Image 26Guard rail on road in Kaluga Oblast (Russia) (from Road traffic safety)
Image 27According to Eurostat, there is almost a linear proportion between the total number of passenger-km driven by car and road fatalities. (from Road traffic safety)
Image 28Closeup of asphalt on a driveway (from Road surface)
Image 29Pavement ends and turns into gravel surface road (from Road surface)
Image 30The Dutch Reach - Use far hand on handle when opening to avoid dooring cyclists or injuries to exiting drivers and passengers. (from Road traffic safety)
Image 31Construction crew laying down asphalt over fiber-optic trench, in New York City (from Road surface)
Image 32Car fatalities per pax-km vs. car usage per pax-day; in Europe. It seems, at least in these European countries, that car fatalities per person-km have no strong correlation with massification of car usage. The average car usage in these countries is around 30km per person-day with varying number of fatalities ratios. These differences might be related with different cultural approaches to traffic codes, or more safety measures implemented on such countries. (from Road traffic safety)
Image 33The Great North Road near Highgate on the approach to London before turnpiking. The highway was deeply rutted and spread onto adjoining land. (from History of road transport)
Image 34John Metcalf, also known as Blind Jack of Knaresborough. Drawn by J R Smith in The Life of John Metcalf published 1801. (from History of road transport)
Image 35Replacing the old road with cobblestones of cement in Bo'ao Road area, Haikou City, Hainan, China. (from Roadworks)
Image 36Utrecht has specially painted bicycle-only lanes. (from Road traffic safety)
Image 37Laying asphalt (from Road surface)
Image 38Jan Brueghel (I) - Travellers on the Way, second half of 16th Century (from History of road transport)
Image 39A concrete road in Ewing, New Jersey (from Road surface)
Image 40An example of composite pavement: hot-mix asphalt overlaid onto Portland cement concrete pavement (from Road surface)
Image 41Concrete roadway in San Jose, California (from Road surface)

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Ledo & Burma Roads linking Assam, Burma, and China.
Credit: Department of Defense, USAF

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Did you know

... that a dendrochronological study suggests the Corlea Trackway, a kilometre-long corduroy road in County Longford, Ireland, was built around 148 BC?

...that Saskatchewan Highway 58 travels the Missouri Coteau to an important shore bird site on Canada's second largest saline lake?

...that the current Northam Bridge in Southampton, England was the first major road bridge to be built using prestressed concrete in the United Kingdom?

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WikiProjects

WikiProject Highways—principal WikiProject
- U.S. Roads—United States state highways and county roads
- U.S. Streets—United States city streets
- Australian Roads—Australian highways, principal roads, and main city streets
- Canada Roads—Canada provincial highways
- Canada Streets—Canada city streets
- WikiProject UK Roads—roads in the United Kingdom
  - London transport—roads, etc.
- Paris Streets
- China Transportation—includes expressways, ring roads, Roads, national highways, etc
- Germany transportation
- Indian Roads
- Nepal transportation
- Pakistani Roads
- Scotland transport—includes road and bus transport in Scotland

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A panorama of Mikumi National Park in Tanzania.
Credit: (Muhammad Mahdi Karim)

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