Line 8 (CPTM)
Line 8 (Diamond) (Portuguese: Linha 8–Diamante), formerly Line B (Gray), is one of the thirteen lines that make up the São Paulo Metro Rail Transport Network in Brazil and one of the three lines operated by ViaMobilidade Linhas 8 e 9. The line was previously operated by Fepasa, and subsequently by CPTM. Since 27 January 2022, ViaMobilidade Linhas 8 e 9 has been operating it under a contract for 30 years, along with Line 9-Emerald.