As the only worldwide network to bring together all public transport stakeholders, UITP is active in all aspects of public transport and sustainable transport modes at urban and regional level. UITP acts as a forum for public transport authorities, operators, policy decision- makers, scientific institutes and the public transport supply and service industry, for worldwide cooperation, business development and knowledge sharing between its (more than) 1,600 members companies from 99 countries in the world.

UITP officially counts 15 liaison and regional offices worldwide and 2 Centers for Transport Excellence in Dubai and Singapore. Thanks to its members organised in working bodies, UITP creates knowledge and enable innovation in specific domains related to all modes of transport available in urban and regional areas (bus, metro, light rail, regional, and suburban rail, taxi and waterborne).