What is Roman roads in Britain?
[[File:Roman.Britain.roads.jpg|thumb|right|280px|Map of Roman roads in Britain #1]] [[File:Roman Roads in Britannia.svg|thumb|right|280px|Map of Roman roads in Britain #2]] The '''Roman roads in Britain''' are built for the Roman [[aqueduct]]s, and for the [[Roman army]],<ref>In the 2nd century about 30 [[Roman legion|legions]] plus around 400 auxiliary units, which is about 400,000 troops. Of these about 50,000 were in Britain.</ref> one of the most impressive features of the [[Roman Empire]] in Britain. In [[Britannia]],<ref>Originally, Britannia was a single province; at the end of Roman rule it was four provinces.</ref> including for other [[province]]s, the Romans constructed a network of paved trunk roads to (surfaced highways). In their nearly four centuries of occupation (43 – 410 AD) they built about 2,000 miles of Roman roads in Britain. They are shown on the [[Ordnance Survey]]'s ''Map of Roman Britain''.<ref>{{Cite web |url=http://leisure.ordnancesurvey.co.uk/leisure/productDetails.jsp?item=2099&q=roman%20britain |title=''Map of Roman Britain'', Ordnance Survey |access-date=2010-08-13 |archive-date=2008-05-25 |archive-url=https://web.archive.org/web/20080525080244/http://leisure.ordnancesurvey.co.uk/leisure/productDetails.jsp?item=2099&q=roman%20britain |url-status=dead }}</ref> This is the most accurate and up-to-date layout of certain and probable routes that is available to the general public. The pre-Roman [[Briton]]s used unpaved trackways, including ancient ones running along the ridges of hills, such as the [[South Downs Way]], now a public long-distance footpath. In contrast, most of the Roman network was surveyed and built from scratch, with the aim of connecting key points by the most direct possible route. The roads were all paved, to permit heavy freight-wagons to be used in all seasons and weather. Most of the known network was complete by 180 AD. Its main purpose was to allow the rapid movement of troops and military supplies. It was also vital for trade and the transport of goods.