国际清洁运输理事会：加快零排放重型车辆市场的供应方监管主要政策的最佳做法（英文版）

As the technology to manufacture heavy-duty vehicles (HDVs) that produce zero tailpipe emissions grows increasingly mature, a path forward for addressing the climate and air quality impacts from these vehicles is emerging. Currently, HDVs are the secondlargest source of greenhouse gas (GHG) emissions in the transport sector, after lightduty vehicles.1 Often powered by diesel engines, the HDV segment is also the largest contributor to air pollutants such as particulate matter and nitrogen oxid