London Underground infrastructure Tube Programme, investigating replacing the trains for the Bakerloo and Piccadilly lines, is looking for trains with better energy conservation and regenerative braking. The Underground serves 270 stations. Fourteen Underground stations are outside Greater London, of which five (Amersham, Chalfont & Latimer, Chesham, and Chorleywood on the Metropolitan line and Epping on the Central line) are beyond the M25 London orbital motorway. The longest distance between two stations is between Chalfont & Latimer and Chesham on the Metropolitan line. The shortest distance between adjacent stations is the between Leicester Square and Covent Garden on the Piccadilly line. The station furthest
Public transport in the London Borough of Havering Public transport in the London Borough of Havering Public transport in the London Borough of Havering, in northeast London, England, is a mix of National Rail, London Underground, London Overground and Crossrail and London Buses services. Rail services are primarily radial to central London with bus services providing most of the orbital connections. The public transport authority is Transport for London and the local authority is Havering London Borough Council. Several railway lines cross the borough running radial to central London. The Great Eastern Main Line has stations at Romford, Gidea Park and Harold Wood, with TfL Rail and Abellio