Subte

Subte is the rapid transit system serving Buenos Aires, Argentina. The term is a shortened form of subterraneo, reflecting its function as an urban underground railway, and the network is commonly referred to simply as the subte.

History and scope: The Subte opened in 1913 with Line A, making it the oldest underground railway in the Southern Hemisphere and the Spanish-speaking world. Over the decades, the network expanded with additional lines, later designated B, C, D, E and H, to connect central districts with outer neighborhoods and surrounding areas. Today the Subte remains a central element of the city’s public transport system.

Operations and network: The system is operated by Metrovías under concession from the City of Buenos Aires. Infrastructure is owned by Subterráneos de Buenos Aires S.A. The network uses standard-gauge tracks and electric traction supplied by a 1500-volt DC third rail. Modern rolling stock has been introduced on several lines, with ongoing upgrades aimed at reliability, safety, and accessibility. The lines intersect with surface transit and with other rail services, providing connections to commuter trains, buses, and other forms of urban mobility.

Lines and service: The Subte currently comprises Lines A, B, C, D, E and H. Each line serves a set of neighborhoods and key transport hubs, enabling access to commercial areas, cultural sites, and residential districts. Fares are integrated with Argentina’s SUBE card system, which allows electronic payments and transfers across multiple modes of transport.

Significance and outlook: As a historic and essential part of Buenos Aires’ transport network, the Subte supports daily commuting and tourism alike. The system continues to undergo modernization, including fleet upgrades and station renovations, with ongoing efforts to expand capacity, improve accessibility, and enhance service reliability.