ADB's $302.38m loan funds Baku Metro's signal, digital upgrades

ADB's Investment in Baku Metro Operations

The Asian Development Bank (ADB) approved a loan of $302.38 million on 13 October 2026, specifically for the modernisation of Baku Metro's signalling systems and the digitalisation of its operational processes. This investment aims to significantly enhance the safety, reliability, and overall efficiency of metro services within Azerbaijan's capital.

The project is integrated into the Government of Azerbaijan's broader $2.6 billion programme, which seeks to expand and upgrade the Baku Metro network.

The state-owned Baku Metropolitan Closed Joint-Stock Company (Baku Metro CJSC) operates the existing network, which encompasses 27 stations across approximately 41 kilometres of track and recorded about 220.4 million passenger boardings in 2025, underscoring its vital role in the city's public transport infrastructure.

Enhancing Operational Safety and Efficiency

A primary objective of the modernisation project involves replacing the existing signalling infrastructure with modern communications-based train control (CBTC) technology. This technological upgrade will be complemented by a comprehensive overhaul of the operations control centre.

These specific investments are anticipated to enable more frequent train services during peak hours, thereby increasing capacity, and to reduce the occurrence of operational incidents that can disrupt service schedules and compromise passenger safety.

Ultimately, these improvements are designed to ensure the effective and smooth functioning of Baku's rapidly expanding metro network, which is crucial for addressing the persistent issue of heavy road congestion in the greater Baku area.

Digital Transformation and Capacity Building

Beyond the signalling overhaul, the project will introduce integrated digital systems across various corporate functions, including asset management, cybersecurity, passenger information, and crowd management.

These systems will be supported by upgraded data centres and secure network infrastructure, enabling Baku Metro CJSC to utilise operational and enterprise data more effectively. This is projected to improve maintenance protocols, enhance decision-making processes, and increase energy efficiency.

Additionally, the project includes initiatives to strengthen the institutional and digital capabilities of Baku Metro CJSC through technical training and workforce development, with a specific focus on promoting women's participation in technical and digital roles.

Co-financing and Programme Scope

The total estimated cost for the Baku Metro Signalling Modernisation and Operations Digitalisation Project stands at $515.07 million. Alongside the ADB's contribution, co-financing will be provided by the Asian Infrastructure Investment Bank (AIIB), which will contribute $79.98 million, and the Government of Azerbaijan, providing $132.71 million.

This specific project is part of Azerbaijan's wider $2.6 billion Baku Metro expansion programme, which also includes the construction of approximately 20 kilometres of new tunnels, 9 new stations, 2 depots, and the acquisition of 300 additional metro cars.

The overarching objective is to expand the coverage and capacity of metro services, thereby addressing significant road congestion in the greater Baku region.

Implications for Urban Infrastructure Development

This substantial investment by the ADB, co-financed by the AIIB and the Government of Azerbaijan, illustrates a collaborative strategy for enhancing critical urban transport infrastructure.

For decision-makers in other Asian cities, the project offers a practical example of how targeted multilateral financing and advanced digital technology can be applied to upgrade existing metro systems and support their expansion.

The focus on implementing advanced signalling technology, integrated digital systems, and strengthening institutional capacity provides a transferable model for addressing the challenges of rapid urbanisation and increasing congestion across the region.

Future operational data and passenger satisfaction metrics from Baku Metro will offer valuable insights for similar initiatives.