46. The expert from Sweden presented GRPE-69-19, reporting on the CCAC activities. He informed GRPE that he Coalition was focusing on methane, black carbon and hydrofluorocarbons (HFCs) with the objective to address short-lived climate pollutants by raising awareness, enhancing new actions, mobilizing support and improving scientific understanding of short-lived climate pollutant impacts and mitigation strategies. He reported, in particular, on one of the ten initiatives of the coalition, the heavy-duty diesel initiative with the objective to virtually eliminate fine particles and black carbon emissions from new and existing heavy duty diesel vehicles and engines (including marine vessels) by (i) steadily reducing sulphur in diesel fuel, (ii) establishing more stringent emission standards with interested nations and parties, (iii) cleaning up existing fleets, (iv) cleaning up ports and marine transport and (v) developing a global green freight initiative. GRPE commented that WP.29 was in a position to contribute to these objectives.