空气质量和交通出行与人民群众的幸福指数息息相关。对于人口密集城市,如何减少污染物排放,缓解城市“最后一公里”问题,是各大中城市在未来发展中的一个全局性重要问题。在制定各类机动车辆尾气排放的标准同时,要加快发展绿色交通,建设投入小、低碳成效好的公共自行车,无疑是未来城市绿色发展之路上需要迈出的重要一步。 Air quality and traffic travel are closely linked with the happiness index of the people. For densely populated cities, how to reduce pollutant emissions and ease the problem of the “last mile” in cities is a major and overall issue in the future development of major cities. While formulating standards for various kinds of motor vehicle exhaust emissions, it is undoubtedly an important step that needs to be taken on the road of urban green development in the future to speed up the development of green transportation and construct public bicycles with small investment and low-carbon effects.