为控制机动车污染,从2004年7月1日在全国范围内实施国Ⅱ标准,到明年7月1日国Ⅳ标准,我国尾气排放标准逐年向更加严格的方向发展。不过由于各地区实际情况不同,实施国家机动车排放标准的进度也不尽相同。广州:2010年轻型车、重型车同时实施广州市实施国Ⅳ标准的时间比较早,2010年7月16日,广州市政府发布通知,自 To control the pollution of motor vehicles, from July 1, 2004 in the implementation of the National Ⅱ standard throughout the country, to July 1 next year, the National IV standards, China’s emission standards year by year to more stringent direction. However, due to the actual situation in different regions, the progress of the implementation of the national vehicle emission standards are not the same. Guangzhou: In 2010, the time for Guangzhou-based light-duty vehicles and heavy-duty vehicles to implement the Ⅳ standard at the same time was relatively earlier. On July 16, 2010, the Guangzhou Municipal Government issued a notice from