be completed by the end of 2002, although suffered delays due to the necessity of installing the required equipment on an ageing railway infrastructure with no disruption to the operational railway. On 5 June 2006 the London Assembly published the 7 July Review Committee report, which urged TfL to speed up implementation of the Connect system. The East London line was chosen as the first line to receive the TETRA radio in February 2006, as it was the second smallest line and is a mix of surface and sub surface. In the same year it was rolled out to the District, Circle, Hammersmith & City, Metropolitan and Victoria lines, with the Bakerloo, Piccadilly, Jubilee, Waterloo & City and Central lines following in 2007. The final line, the Northern, was handed over in November 2008. The 2010 TfL investment programme included the project "LU-PJ231 LU-managed Connect communications", which provided Connect with a new transmission and radio system comprising 290 cell sites with two to three base stations, 1,400 new train mobiles, 7,500 new telephone links and 180 CCTV links. London Transport Museum TfL also owns and operates the London Transport Museum in Covent Garden, a museum that conserves, explores and explains London's transport system heritage over the last 200 years. It both explores the past, with a retrospective look at past days since 1800, and the present-day transport developments and upgrades. The museum also has an extensive depot, situated at Acton, that contains material impossible to display at the central London museum, including many additional road vehicles, trains, collections of signs and advertising materials. The depot has several open weekends each year. There are also occasional heritage train runs on the Metropolitan line. Fares Most of the transport modes that come under the control of TfL have their own charging and ticketing regimes for single fare. Buses and trams share a common fare and ticketing regime, and the DLR, Overground, Underground, and National Rail services another. Zonal fare system Rail service fares in the capital are calculated by a zonal fare system. London is divided into eleven fare zones, with every station on the London Underground, London Overground, Docklands Light Railway and, since 2007, on National Rail services, being in one, or in some cases, two zones. The zones are mostly concentric rings of increasing size emanating from the centre of London. They are (in order): Zone 1 Zone 2 Zone