With approx. 250,000 inhabitants, the city of Porto is the second largest city in Portugal. It has a tram system with a length of approximately 70 kilometers, which is known as Metro do Porto and runs underground in the city centre.
There are also three heritage tram lines, but they serve mainly tourist purposes and are operated by tramcars from the 1940s in a 30 minutes headway.
Operator of the light rail and the funicular is → Metro do Porto S. A.
, the buses and trams are operated by → STCP (Sociedade de Transportes Colectivos do Porto, S.A.)