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Jalan Ampang at night, with the Petronas Twin Towers visible in the background in Kuala Lumpur, Malaysia.
Roads, defined as a path connecting two points, are generally classified into a hierarchy. At the top of the hierarchy are freeways (US) (UK: motorways), which serve entirely a function of moving vehicles between other roads. Freeways are grade-separated and limited access, have high speeds and carry heavy flows. Below freeways are arterials. These may not be grade-separated, and while access is still generally limited, it is not limited to the same extent as freeways, particularly on older roads. These serve both a movement and an access function. Next are collector/distributor roads. These serve more of an access function, allowing vehicles to access the network from origins and destinations, as well as connecting with smaller, local roads, that have only an access function, and are not intended for the movement of vehicles with neither a local origin nor destination. Local roads are designed to be low speed and carry relatively little traffic.

The design of roads is specified in a number of design manual, including the AASHTO Policy on the Geometric Design of Streets and Highways (or Green Book). Relevant concerns include the alignment of the road, its horizontal and vertical curvature, its super-elevation or banking around curves, its thickness and pavement material, its cross-slope, and its width. Fundamentals of Transportation/Geography and Networks

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A1 Motorway
The A1 motorway (Croatian: Autocesta A1) is the longest motorway in Croatia spanning 454.5 kilometers (282.4 mi). As it connects Zagreb, the nation's capital, to Split, the second largest city in the country and the largest city in Dalmatia, the motorway represents a major north–south transportation corridor in Croatia and a significant part of the Adriatic–Ionian motorway. Apart from Zagreb and Split, the A1 motorway runs near a number of major Croatian cities, provides either access to several national parks or nature parks and world heritage sites and numerous resorts, especially along the Adriatic Coast. The motorway is currently being extended south of Split to the port of Ploče and the city of Dubrovnik. National significance of the motorway is reflected through its positive economic impact on the cities and towns it connects as well as its importance to tourism in Croatia, however its genuine importance as a transit route shall be achieved upon completion of the Adriatic–Ionian motorway along the sections currently spanned just by the Adriatic Highway and two-lane roads in Slovenia and Albania connecting to the route.

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A view of the north and south carriageways of Rodovia dos Imigrantes, one crossing over the other at (23°55′7.00″S 46°24′57.00″W / 23.9186111°S 46.4158333°W / -23.9186111; -46.4158333)
Credit: (OS2Warp)

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...that Berlinka (pictured) was a partially constructed highway built by Nazi Germany that was intended to span the Polish Corridor from Berlin to Königsberg, Prussia?

..that 24 Royal Marines cadets aged 10 to 13 were killed when a double-decker bus ploughed into their marching column in the 1951 Gillingham bus disaster, setting a new British record of fatalities in a road accident?

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A new road bridge over the south approach railway line of the Hallandsåstunneln near Förslöv, Skåne Quality image
Credit: (Klaus with K)

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This list is transcluded from the tasks page, to edit this section click here.

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Here are some tasks you can do for WikiProject Highways:

  • Improve: You may always improve the quality of road articles by adding more information and references to enhance the overall readers' experience. Improvements to GA and FA quality is much appreciated! Also, nominations for Selected article and Selected picture are always needed, as with Did you know and News. Add to the Portal
  • Photo request: Just about all of them! Any pictures of Highways regions, road surface or infrastruture varieties or Highways would be useful. In particular we need Highways region maps that can be licensed for Wikipedia.
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  1. ^ "Saskatchewan's Global Transportation Hub". About Highways/Transportation Hub/. Government of Saskatchewan. Retrieved 2009-02-09.
  2. ^ Police don't know what prompted vicious bus attack, CTV.ca, July 31, 2008. Accessed August 6, 2008.

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