# Buenos Aires subway modernization plan

> Live situation record from CLSTR: https://clstr.news/situations/buenos-aires-subway-modernization-plan
> Updated: 2026-09-20T03:04:20.000Z. Sources: 16. Developments: 2.

The Government of the City of Buenos Aires has initiated a modernization plan for its subway system, targeting significant upgrades by 2027. Managed by Subterráneos de Buenos Aires (SBA) and the Ministry of Infrastructure, the project focuses on fleet renewal and station accessibility.

Key components include the complete renewal of the Line B fleet with 174 new cars equipped with air conditioning, LED lighting, and security cameras. Lines A and C are scheduled to receive 50 new cars in January to enhance service frequency. Infrastructure works involve replacing 84 obsolete escalators and installing 12 new elevators, alongside electrical upgrades and preparations for the future Line F.

## Claims

- The Buenos Aires government is implementing a modernization plan for the subway system targeting 2027. (single source)
- Line B will receive 174 new subway cars equipped with air conditioning, security cameras, and LED lighting. (single source)
- Lines A and C will add 50 new subway cars starting in January to optimize frequency. (single source)
- The city plans to replace 84 obsolete escalators across the subway network. (single source)
- Bus and Metrobus services are projected to account for approximately 35.9% of Buenos Aires' modal split by 2050. (single source)
- The route for bus Line 29 will be modified, specifically affecting branch B by shortening its terminus to Plaza Italia. (single source)

## Timeline

### 2026-09-20: Buenos Aires launches subway modernization plan for 2027

Buenos Aires is implementing a major subway modernization plan through 2027, including fleet renewals for Lines A, B, and C, alongside long-term urban mobility projections and bus route adjustments.

5 sources. https://clstr.news/cluster/buenos-aires-launches-subway-modernization-plan-for-2027

### 2026-09-16: La Plata Airport modernization plan unveiled by Buenos Aires officials

Buenos Aires officials unveiled a USD 93 million plan to transform La Plata Airport into a multimodal logistics hub, alongside various provincial investments in healthcare and education infrastructure.

11 sources. https://clstr.news/cluster/buenos-aires-health-minister-visits-san-felipe-hospital-amid-local-dispute

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Cite as: Buenos Aires subway modernization plan. CLSTR, https://clstr.news/situations/buenos-aires-subway-modernization-plan