“Trambus” in Buenos Aires refers to a new, fully electric, high‑capacity bus system the city is rolling out as part of its public transport decarbonization plan.
What is the new Trambus expected to service
The Trambus is designed to combine tram‑style comfort and capacity with the flexibility of a bus: it looks and functions like a tram (multiple wide doors, spacious interior, smooth, quiet ride) but runs on tyres and does not require rails. The vehicles will be 100% electric, silent, and emission‑free, and will be positioned as a complement to the existing subway and “colectivo” bus network.
Fleet and technical characteristics
The city has tendered 20 electric Trambus vehicles in two sizes: standard units for about 75–85 passengers and articulated units for 120+ passengers. They are planned to operate at an average commercial speed of around 20 km/h on dedicated or priority corridors, with designs emphasising safety, accessibility, and low noise. A pilot electric Trambus with roughly a 400 kWh battery is already under test on Linea 34, with energy consumption estimates that allow a full urban operating day with a mix of overnight and short intermediate charging.
The Mini Version, which currently circulates around the inner city
Routes and rollout timing
City announcements indicate the first 20 Trambus units are expected to enter service in the first half of 2025, initially as part of new “green” corridors and connections, especially linking dense or currently underserved neighbourhoods. Planned TramBus corridors (often labelled T1, T2, etc.) will integrate with existing hubs such as Aeroparque and major transfer centres, with further lines projected toward 2026–2027 as part of a broader climate and mobility strategy.
How does it fit into public transport in BA?
For a rider, the Trambus will just be another mode accepted on the standard SUBE card and priced similarly to buses, but with faster boarding and higher comfort on key corridors. Strategically, it sits alongside electric minibuses in the historic centre and an expanding e‑bus network, all aimed at cutting noise and emissions while increasing capacity without the cost and disruption of building new rail lines.l
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