São Paulo Metropolitan Trains
The São Paulo Metropolitan Train (Brazilian Portuguese: Trem Metropolitano de São Paulo) is a public railway system of commuter rail services operating in Greater São Paulo, serving 23 of its 39 municipalities. The system comprises 281 km (175 mi) of length, 7 lines and 100 unique (110 overall) stations, carrying around 3 million passengers on an average weekday.
Source: Wikipedia — São Paulo Metropolitan Trains (CC BY-SA 4.0)