一、命题背景随着城市化进程的不断深入,城市交通与布局问题日渐影响城市的发展。2016年2月颁布的《中共中央国务院关于进一步加强城市规划建设管理工作的若干意见》提出,“加强自行车道和步行道系统建设,倡导绿色出行”。全国首条空中自行车道——厦门云顶路自行车快速道示范段于2017年1月26日试运营。北京也准备建设自行车“高速路”。厦门和北京的自行车专用道是对 First, the proposition background With the deepening of the urbanization process, urban transport and layout issues increasingly affect the city’s development. The Opinions of the Central Committee of the Communist Party of China and the State Council on Further Strengthening the Administration of Urban Planning and Construction promulgated in February 2016 put forward that “strengthening the construction of bicycle lanes and pedestrian lanes and promoting green travel”. The first air bike lane in China - Xiamen Expressway bike demonstration section on January 26, 2017 trial operation. Beijing is also preparing to build a bicycle “highway”. Bicycle lanes in Xiamen and Beijing are right