Establish partnerships at international, national, subnational and local levels between governmental and intergovernmental bodies, the public, environmental, health and transport NGOs, industry, the private sector, ensuring that synergistic actions are taken and that measures at one level do not increase transport-related adverse effects at other levels. In particular, intensify cooperation with economies in transition, with the aim of fostering good practices related to health-promoting transport.
Cooperation includes technical cooperation among national and international agencies to promote further investigation of the health effects of pollutants, pollutant mixes, noise and other hazards from transport where evidence is incomplete and human exposure is significant (e.g. diesel engine emissions, and especially fine and ultrafine particles), including their possible carcinogenic risk potential.