The Tren Urbano (English: Urban Train), is a 10.7-mile (17.2 km) fully automated rapid transit that serves the metropolitan area of San Juan in Puerto Rico, and has stops in the municipalities of San Juan, Bayamón and Guaynabo. It is electrified by third rail at 750 V DC. The Tren Urbano consists of 16 stations along a single line.
The Tren Urbano complements other forms of public transportation on the island such as the public bus system, taxis, water ferries and shuttles. The entire mass transportation system has been dubbed the “Alternativa de Transporte Integrado” (Integrated Transportation Alternative) or “ATI”. Tren Urbano is also the Caribbean's first rapid transit system.
Read more about Tren Urbano: History, Route, Expansion Plans