Trams 72 Bombardier Flexity.

The Porto Metro (Portuguese: Metro do Porto), part of the public transport (mass transit) system of Porto, Portugal, is a light-rail network that runs underground in central Porto and above ground into the city's suburbs. The Porto Metro was founded in 2002, and it was for years one of the major construction sites in the European Union. The network has 6 lines and reaches seven municipalities within the metropolitan Porto area: Porto, Gondomar, Maia, Matosinhos, Póvoa de Varzim, Vila do Conde and Vila Nova de Gaia. It currently has a total of 80 operational stations across 67 km (41.5 mi) of double commercial line. Most of the system is at ground level or elevated, but 8 km (5 mi) of the network is underground. The system is run by ViaPORTO.
The Metro do Porto company also operates the Funicular of Guindais, a cable-car system that was originally built in 1891 and recently remodelled. It connects the riverside area of Ribeira to higher ground at Batalha, near Sao Bento station.