⚠️ Roca Train Service Disrupted After Incident
Published on August 13, 2026 | Source: Transporte AMBA (@TransporteAMBA)
On August 12, 2026 at 5:23 PM, the official Transporte AMBA account on X (formerly Twitter) issued an alert about service irregularities on the Tren Roca, one of the busiest commuter rail lines in the Buenos Aires Metropolitan Area (AMBA).
According to the official statement, the affected branches were:
- Bosques via Temperley — delays and cancellations
- Bosques via Quilmes — delays and cancellations
The cause was reported as an accident in Florencio Varela, a district located in the southern part of the Buenos Aires conurbation. The tweet included an 🟠 orange indicator, which according to Transporte AMBA's color-coded system suggests a moderate level of service disruption.
What is the Tren Roca?
The Tren Roca is one of the most important railway lines in the AMBA network, currently operated by the state-owned Trenes Argentinos Operaciones (SOFSE). It connects Constitución Station in downtown Buenos Aires with numerous localities in the southern suburbs, covering districts such as Lomas de Zamora, Temperley, Quilmes, Berazategui, Florencio Varela, and Bosques, among others.
The Bosques via Temperley branch is the main route connecting Constitución with the town of Bosques, passing through Temperley station, a key transfer hub. The Bosques via Quilmes branch takes an alternative route through the Quilmes area before converging toward Bosques.
Every day, thousands of passengers rely on these branches for their commutes to and from Buenos Aires, so any disruption has a significant impact on regional mobility.
The Accident in Florencio Varela
The Transporte AMBA tweet cited an accident in Florencio Varela as the cause of the delays, without providing specific details about the nature of the incident. It is unclear whether it involved a vehicle at a level crossing, a railway incident, or another situation that affected train circulation in the area.
📋 Key Details
| Event Date | 08/12/2026 |
| Report Time | 5:23 PM |
| Affected Line | Tren Roca |
| Branches | Bosques via Temperley & via Quilmes |
| Cause | Accident in F. Varela |
| Alert Level | 🟠 Orange (moderate) |
| Source | Transporte AMBA (X/Twitter) |
📞 Where to Get Updates
• Trenes Argentinos app (available for iOS and Android)
What to Do When Trains Are Cancelled
When facing delays or cancellations, passengers have alternative options:
🚌 Replacement buses: Trenes Argentinos typically arranges bus services at key stations when trains cannot run.
🚇 Subway lines: From Constitución, passengers can access Line C of the Buenos Aires subway to continue toward the city center and other areas.
🚍 City buses (colectivos): Several bus lines follow routes similar to the affected branches, though they may experience higher demand during rail disruptions.
📱 Real-time info: Following official social media accounts allows passengers to track service status minute by minute and plan their return trips accordingly.
Sources: Transporte AMBA (@TransporteAMBA) — Post from 08/12/2026 5:23 PM.