this is more of an elevated light metro system due to its lower passenger capacities; further, it is integrated with the Underground in many ways). Outside London, there is the Glasgow Subway which is the third oldest rapid transit system in the world (opened 1896). One other system, the Tyne & Wear Metro (opened 1980), serves Newcastle, Gateshead, Sunderland, North Tyneside and South Tyneside, and has many similarities to a rapid transit system including underground stations, but is sometimes considered to be light rail. Urban rail Urban commuter rail networks are focused on many of the country's major cities: Belfast – Belfast Suburban Rail Birmingham – West Midlands Railway Bristol – Great Western Railway and proposed MetroWest Cardiff – Valley Lines including proposed South Wales Metro Edinburgh – ScotRail Glasgow – ScotRail Leeds – MetroTrain Liverpool – Merseyrail London – London Underground, London Overground, and Elizabeth line Manchester – Northern and TransPennine Express Newcastle – Tyne & Wear Metro They consist of several railway lines connecting city centre stations of major cities to suburbs and surrounding towns. Train services and ticketing are fully integrated with the national rail network and are not considered separate. In London, a route for Crossrail 2 has been safeguarded. Trams and light rail Tram systems were popular in the United Kingdom in the late 19th and early 20th century. However, with the rise of the car they began to be widely dismantled in the 1950s. By 1962 only the Blackpool tramway and the Glasgow Corporation Tramways remained; the final Glasgow service was withdrawn on 4 September 1962. Recent years have seen a revival the United Kingdom, as in other countries, of trams together with light rail systems. Road transport The road network in Great Britain, in 2006, consisted of of trunk roads (including of motorway), of principal roads (including of motorway), of "B" and "C" roads, and of unclassified roads (mainly local streets and access roads) – totalling . Road is the most popular method of transport in the United Kingdom, carrying over 90% of motorised passenger travel and 65% of domestic freight. The major motorways and trunk roads, many of which are dual carriageway, form the trunk network which links all cities and major towns. These carry about one third of the nation's traffic, and occupy about 0.16% of its land area. The motorway system, which was constructed from the 1950s onwards, is stated