Oxford Street is a major road in the City of Westminster in the West End of London, running from Tottenham Court Road to Marble Arch via Oxford Circus. It marks the notional boundary between the areas of Fitzrovia and Marylebone to the north, with Soho and Mayfair to its immediate south. It is Europe's busiest shopping street, with around half a million daily visitors, and as of 2012 had approximately 300 shops. It is designated as part of the A40, a major road between London and Fishguard, though it is not signed as such, and traffic is regularly restricted to buses and taxis.