The work of the Transport Decarbonisation Alliance (TDA) is organised in Communities of Interest. Country, cities, regions and company members of the TDA come together and exchange information on best practices, common challenges and solutions. This approach enables TDA members and partners to work together on innovative pilot projects and on identifying actionable solutions to decarbonise transport.

Communities of Interest in the TDA are formed for a certain duration, with the goal to provide specific outputs and activities. New Communities of Interest can be launched when there is enough interest, and TDA members can suggest new topics as well as volunteer to lead and coordinate the work of a Community of Interest.