According to a market forecast, the global market for metro infrastructure is expected to reach a volume of EUR 68.6 billion (USD 78.3 billion) by 2033, up from an estimated EUR 40.8 billion in 2026. This would correspond to an average annual growth rate of 7.7%. Key drivers include ongoing urbanisation, investments in smart cities and the expansion of sustainable public transportation systems. The market remains dominant particularly in the Asia-Pacific region, mainly due to ongoing projects in China and India. Modernisation, automation and the renewal of existing networks are cited as the primary growth drivers for Europe and North America. The strongest growth is expected in the Middle East and Africa, driven by urban development programmes and major transportation projects in countries such as the United Arab Emirates, Saudi Arabia and Qatar. Technologically, the market is shaped by automated train control, communication-based train control (CBTC) systems, predictive maintenance, 5G connectivity and digital fare collection systems. Public-private partnerships (PPP) and foreign direct investment are cited as key financing instruments. The leading suppliers include Alstom, Siemens Mobility, CRRC, Hitachi Rail and Thales.