Alstom is a French multinational rolling-stock and rail-systems manufacturer headquartered in Saint-Ouen-sur-Seine near Paris, supplying trains, signalling and infrastructure for public-transport operators worldwide. Founded in 1928, it became one of the largest rail-equipment makers globally, especially after acquiring Bombardier Transportation. Its strategy centres on enabling low-carbon mobility and eco-designed products.

Mobico Group plc, formerly National Express Group, is a British multinational public-transport operator headquartered in Birmingham, running bus, coach and rail services in the UK, Spain (ALSA), North America and Germany. Founded in 1972 and rebranded to Mobico in 2023, its sustainability focus includes fleet decarbonisation and transitioning to zero-emission buses and coaches.

Swiss Federal Railways (SBB CFF FFS) is Switzerland’s national railway company, headquartered in Bern, operating the country’s passenger and freight rail network as well as real-estate and energy assets. Founded in 1902, it is a federally owned enterprise central to Swiss mobility, running low-carbon rail powered largely by hydroelectricity.

Deutsche Bahn AG is Germany’s national railway company, headquartered in Berlin, operating passenger and freight rail, infrastructure and logistics services in Germany and internationally. It was formed in 1994 through the merger of the former West and East German state railways. Its Green Transformation strategy targets climate neutrality by 2040 and expanded renewable traction electricity.