\r\nA consortium of Isolux-Corsan and Corvium was awarded the phase 2 contract in 2012, but the agreement was terminated last July after the contractor failed to complete the works on schedule. Only one of the stations, Fradique Coutinho, was completed before the contract was terminated. The consortium says the construction delays were caused by contractors appointed by S\u00e3o Paulo Metro and were not the result of its own management of the works.\r\nPhase 2 comprises the completion of the two-station western section of the line from Butant\u00e3 to Vila S\u00f4nia, which is already used by trains travelling to and from the depot, together with the completion of three intermediate stations on the initial operating section between Butant\u00e3 and Luz.Ten proposals were received for the contract to compete the project and TC-Linha 4 Amarela submitted a bid of Reais 858.7m ($US 250m).\r\nThe interchange with the future metro Line 6 at Higien\u00f3polis Mackenzie on the initial operating section of Line 4 is due to be completed within a year of contract signing, while Oscar Freire station will open within 15 months. Services are expected to begin operating to S\u00e3o Paulo-Morumbi and Vila S\u00f4nia in 2019.\r\nWhen phase 2 is completed Line 4 will be 12.8km long with 11 stations. The first phase of the driverless line opened in 2010.