Line 9 (Emerald) (Portuguese: Linha 9–Esmeralda), formerly Line C (Sky Blue) (Linha C–Celeste) and Line C (Emerald) (Linha C-Esmeralda), is one of the three lines operated by ViaMobilidade and one of the thirteen lines that make up the São Paulo Metro Rail Transport Network, in Brazil.[1] Since 27 January 2022, ViaMobilidade operates the line for 30 years, along with Line 8-Diamond.[2][3]
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