12月13日，在西安市雁南路，一块标语牌竖立在尾气路检路段。为加强机动车排气污染防治，改善环境空气质量，西安市环保局、市公安局交通管理局自2012年9月10日起，在全市范围内开展“黑烟车辆及黄标车、无标车集中整治活动”。截至目前，已查处超标排放车2785辆。新华社记者 丁海涛 摄      On December 13,In xi "an geese south road,A placard erect in tail gas LuJian sections.In order to strengthen the prevention and control of motor vehicle exhaust pollution,Improving the environment air quality,Xian city environmental protection bureau/The municipal public security bureau traffic administration since 2012 September 10,Throughout the city development"Black smoke vehicles' profile consists and car/No standard car concentration improvement activities".So far,Has the excess emissions and 2785 chariots.Xinhua news agency DingHaiTao perturbation 

    12月13日，在西安市雁南路，西安市机动车排气污染监督监测中心执法人员在进行路检执法。新华社记者 丁海涛 摄     On December 13,In xi "an geese south road,Xi an motor vehicle exhaust pollution supervision and monitoring center law enforcement personnel in LuJian law enforcement.The xinhua news agency DingHaiTao perturbation

    12月13日，在西安市雁南路，西安市机动车排气污染监督监测中心执法人员在进行路检执法。新华社记者 丁海涛 摄     On December 13,In xi "an geese south road,Xi an motor vehicle exhaust pollution supervision and monitoring center law enforcement personnel in LuJian law enforcement.The xinhua news agency DingHaiTao perturbation