A crowd of bicycl ist are resting and to chat ting on the distant grassplot. on the grass some distance away. 一帮竞速车选手坐在远处的草地上休息聊天。
Acase study shows that the practical efficiency of traffic network is improved by over 25 percent of the total travel time and the safety of the bicycler is ensured after an optimal arrangement of road space between bicycles and vehicles. 实例研究表明：通过单幅道路自行车与机动车使用空间组织优化，在保障自行车交通出行者安全的同时，能提高25%25以上的交通效率。
