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The Autostrada A1 or Autostrada del Sole ("Sun motorway") is the longest (760 kilometres (470 mi)) [1] autostrada (Italian for "motorway") in Italy, [2] [3] linking some of the largest cities of the country: Milan, Bologna, Florence, Rome and Naples. The Autostrada A1 is located in the regions of Lombardy, Emilia-Romagna, Tuscany, Umbria, Lazio ...
Autostrada A14 Autostrada A11 Autostrada A12. In order for a road to be classified as a motorway, various geometric and construction conditions must be satisfied and these, although very similar in basis (for example the width of the travel lanes must be 3.75 metres (12.3 ft)) are not constant: there are different technical-legal regulations for motorways built in urban or extra-urban areas.
Grande Raccordo Anulare in the 1950s. Plans for an orbital road around Rome were proposed by the end of World War II.One of the designers' main purposes was to build the road as most equally distant as possible from the geographic centre of town, the Campidoglio, 11.4 kilometres (7.1 mi) away from the motorway.
The first section of motorway, the M6 Preston Bypass, opened in 1958, followed by the first major section of motorway (the M1 between Crick and Berrygrove in Watford), which opened in 1959. From then until the 1980s, motorways opened at frequent intervals; by 1972 the first 1,600 kilometres (1,000 mi) of motorway had been built.
If the sign indicates kilometers of a motorway the sign is accompanied by a green sign (positioned to the right or below the main sign) indicating the next exit with the distance remaining if the kilometer ends in 1, 3, 4, 6, 7 or 9, the next service area with the remaining distance if the kilometer ends with 2, 5 and 8 or the highway with the ...
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A scheme of motorway network around the city of Rome, showing the Grande Raccordo Anulare. Rome is served by an extensive motorway network. The most important motorway serving the city is the A90, also known as Grande Raccordo Anulare or GRA (Great Ringroad) which run in a circle around the city.
On main roads and within cities, the colour of a directional sign with a single destination depends on the type of destination: if the destination is a city that is reached by means of a motorway, the sign is green and carries the motorway name as well as the destination; in the other cases when the destination is a city, the sign is blue