Route Number
A route (or road) number, designation or abbreviation is an identifying numeric (or alphanumeric) designation assigned by a highway authority to a particular stretch of roadway to distinguish it from other routes and, in many cases, also to indicate its classification (e.g. motorway, primary route, regional road, etc.), general geographical location (in zonal numbering systems) and/or orientation (north-south v. east-west). The numbers chosen may be used solely for internal administrative purposes; however, in most cases they are also displayed on roadside signage and indicated on maps. Use of letters Letters are often used in road designations to indicate a class of roadways. Within such a class, roads are distinguished from each other by a road number. The way such letters are used depends on the country or other political jurisdiction which contains and controls the road. For instance, among A1 motorways, the one in Spain has a hyphen between the A and the 1 (Autovia A-1) whil ...
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Numbered Street
A numbered street is a street whose name is an ordinal number, as in ''Second Street'' or ''Tenth Avenue''. Such forms are among the most common street names in North America, but also exist in other parts of the world, especially in Colombia, which takes the system to an extreme, and the Middle East. Numbered streets were first used in Philadelphia and now exist in many major cities and small towns. Grid-based naming systems usually start at 1 (but sometimes at a higher number or even at zero), and then proceed in numerical order. In the United States, seven out of the top ten most common street names are numbers, with the top three names being "2nd," "3rd," and "1st" respectively. Streets named "0th" are quite uncommon, however, but do exist (sometimes spelled out "Zero Street") (like 0 Avenue in BC, Canada), and negative numbered streets (i.e, "−1st", "−2nd", etc.) are extraordinarily rare. Fractional numbered streets exist in some places, such as Street in Springfield, ...
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G Road (other)
G road may refer to : * China National Highways, a series of trunk roads throughout mainland China with G-prefixed road numbers * In the United States: ** County-designated highways in zone G in Michigan ** Corridor G U.S. Route 119 (US 119) is a spur of US 19. It is a north–south route (on a northeast-southwest alignment) that was an original United States highway of 1926. It is Corridor G of the Appalachian Development Highway System (ADHS) east of US ...

R Road (other)
R road may refer to: * Ring roads in Belgium * R roads in the Czech Republic - expressways * Regional roads in Ireland * R roads in Malaysia, roads in Perlis * Regional roads in Senegal * R roads in Slovakia are "Rýchlostná cesta" (expressways) * Regional Routes in South Africa, designated with letter R * Provincial Routes in South Africa, also designated with letter R * Corridor R The Appalachian Development Highway System (ADHS) is a series of highway corridors in the Appalachia region of the eastern United States. The routes are designed as local and regional routes for improving economic development in the historica ...