Climate and Clean Air in Latin American Cities Plus Programme Phase 2 (CALAC+ 2) Phase 2 of the Climate and Clean Air in Latin American Cities Plus Programme (CALAC+) will support the consolidation and implementation of local and national measures to reduce emissions of air pollutants and greenhouse gases (GHG) from urban transport and non-road mobile machinery to protect the climate and human health. CALAC+ will foster normative and technological changes through regional cooperation, building on Swiss expertise, and share the programme’s experience at the global level.