道路行驶车辆中卡车占比不足 4%，但据估计其贡献了道路运输二氧化碳排放量的 27%。随着城市化进程推进，城市人口绝对数量与人口密度持续上升，城市货运交通随之增长，加剧了拥堵和有害排放。需要采取行动改进交通战略，减少交通相关排放：大气污染、噪声污染和温室气体排放。
Though less than 4% of vehicles on the road are trucks, it is estimated that they are responsible for 27% of road transport’s CO2 emissions. As urbanisation grows, absolute numbers of population as well as population density are continuing to rise in cities. Consequently, urban commercial transport is also increasing, exacerbating congestion and harmful emissions. Action is needed to improve strategies for transport and to reduce transport related emissions: air pollution, noise pollution, and greenhouse gas emissions.