Line 9 (CPTM)

Line 9 (Emerald) (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. Since 27 January 2022, ViaMobilidade operates the line for 30 years, along with Line 8-Diamond.