Manchester Metrolink is a light rail system in Greater Manchester, England. It consists of three lines which converge in Manchester city centre and serve the surrounding towns of Bury, Altrincham and Eccles. The system is owned by the Greater Manchester Passenger Transport Executive (GMPTE) and operated under contract by Stagecoach Group. Metrolink trams run on the highway in the city centre, but most of the routes in the suburbs use former heavy rail lines. Several extensions to the system are currently under construction or have been proposed. Late in 2008 works started extending the system to East Didsbury, Ashton-under-Lyne, Oldham, Rochdale, Mediacity:uk and Manchester Airport. The expansions will increase the system's length from 37km (23 mi) to 97km (60.2 mi) with at least 99 stops. On the 13th May 2009, funding was finally secured for phase 3b, with a small rise in council taxes, and work will start from late 2009. Further potential extensions to Stockport and the Trafford Centre are envisaged, subject to funding.