Opening of the Buenos Aires Premetro (Line E2)

On December 21, 1984, Buenos Aires introduced the Premetro, also designated Line E2, marking a significant development in Argentina’s urban transit landscape. Conceived as a light‑rail feeder for Line E of the Subte, the Premetro was built to bring reliable rail service to southern districts underserved by heavy‑rail lines. Operated initially by the state‑run Subterráneos de Buenos Aires, the line used articulated light‑rail vehicles and ran on reserved trackways designed to speed travel in congested areas. Its opening represented one of the first modern light‑rail deployments in South America, influencing later transit planning efforts throughout the region. Although modest in scale, the Premetro demonstrated the viability of light‑rail solutions as complements to heavy‑rail metro systems and remains an integral part of Buenos Aires’ transit network.