The A1 is one of London's main roads, providing a link to the M1 and the A1(M) motorways, and on to the Midlands, Northern England and Scotland. Despite this, its main use is to connect a number of neighbourhoods within north London; less than 5% of its vehicles are through traffic – the bulk is local. The roads along which the A1 route travels are the shared responsibility of the local boroughs, the Greater London Authority, and the British Government via the Department for Transport.