The MTS, Metro Transportes do Sul also often called the Metro Sul do Tejo is a modern light-rail system in the towns on the south bank of the Tejo river opposite to Lisboa. Construction works started in 2003. The first tram arrived in 2005 and on 30 april 2006 the first section between Corroios and Cova da Piedade was inaugurated and entered public service the next day. On 15 december 2007 the route between Cova da Piedade and Universidade opened and finally on 27 november 2008 the current network was completed by opening the line to Cacilhas.