Transport in the United Kingdom is facilitated with road, air, rail, and water networks. A radial road network totals 29,145 miles (46,904 km) of main roads, 2,173 miles (3,497 km) of motorways and 213,750 miles (344,000 km) of paved roads. The National Rail network of 10,072 route miles (16,116 km) in Great Britain and 189 route miles (303 route km) in Northern Ireland carries over 18,000 passenger and 1,000 freight trains daily. Urban rail networks exist in Belfast, Birmingham, Cardiff, Edinburgh, Glasgow, Liverpool, London, Manchester and Newcastle. There are many regional and international airports, with Heathrow Airport in London being one of the top ten busiest in the world. The UK also has a network of ports which received over 486 million tons of goods in 2019. Transport is the lar