Governments supported the development of sustainable transport systems, including energy-efficient multimodal transport systems, notably public mass transportation systems, and clean fuels and vehicles.
Ten years later, national governments went further and recognized the centrality of transportation and mobility to sustainable development. The Future We Want—the outcome document adopted at the 2012 UN Conference on Sustainable Development (Rio+20)—stated sustainable transport can improve economic growth and integration, the environment, social equity and accessibility, public health, urban resilience, urban-rural linkages, and rural area productivity. Governments supported the development of sustainable transport systems, including energy-efficient multimodal transport systems, notably public mass transportation systems, and clean fuels and vehicles.