in october 2008, one of the "sociétés d'économie mixte de paris" (semapa) requested a feasibility study to be conducted on an expansion from place gambetta to ivry-sur-seine. an independent study was done by the "syndicat des transports d'île-de-france" (stif), in which the stations "chevaleret", "bibliothèque françois mitterrand", "bruneseau", "ivry – nelson-mandela", and "ivry-place gambetta" were included.