additional trains run, some starting/terminating from White Hart Lane or Seven Sisters. The lines are double track for most of its length, however between Hackney Downs and Liverpool Street it is multitrack – the suburban lines for trains stopping at Bethnal Green, Cambridge Heath and London Fields and the Main Lines for non-stop West Anglia/Stansted Express services. It is electrified at 25 kV AC using overhead line equipment and has a line speed of 40–75 mph except between Cheshunt and Coppermill junction where it is 60–85 mph. Different sections have different loading gauges. Most is W8, with the branches to Enfield Town and Chingford being W6 and the branch to Stratford W9. Future developments The Tottenham Hale–West Anglian route is planned to become part of Crossrail 2 to Cheshunt, Broxbourne and Hertford East. References Railway lines in London Railway lines in the East of England Lee Valley Park Standard gauge railways in England Transport in the City of London Transport in the London Borough of Enfield Transport in the London Borough of Hackney Transport in the London Borough of Haringey Transport in the London Borough of Tower Hamlets Transport in the London Borough of Waltham Forest