The essay investigates some of the major roads and the timing of their traffic lights, adopting the methodology of National Physical Ability Monitoring System in testing the walking ability within 10 meters. The survey covers a total sample of 334 senior Citizens (136 males & 198 females) in Nanjing> whose ages are all above 60 and the investigation focuses on their walking speed, fundamental information regarding their living community in the area of roads, crossing, buildings & public recreational facilities, etc. The result of the survey shows that with the increase of their age, the senior citizens whose ages are above 70 (including) can't fully cross the road within the standard timing of traffic light even their physical condition is suitable for quick pace. Thus the essay analyzes the walking ability of urban senior citizens & the current environmental conditions of their living community and provides the following proposals in optimizing the public transportation of their community, enhancing the obstacle-free design of their living apartments and increasing the public facilities to improve the community service.%参照国民体质监测方法测试10米步行速度,对调查区域附近部分人、车流量较大道路宽度直接测量和对路口交通信号灯时间值直接观察,调查测定了334名(其中男136名,女198名)60岁以上南京市城市老年人步行速度,了解老年人居住区的住区道路、信号交叉口、住宅建设、公共设施等户外环境的基本情况.结果表明:70岁及以上的老年人即使在健康状况允许快走的前提下仍有一部分无法在绿灯时间里通过街道,与60-69岁组相比呈现急剧上升的趋势.通过分析城市老年人步行能力和居住区户外环境现状,建议优化老年人居住区的交通；完善城市老年人的住宅建设,加强无障碍设计；配齐公共设施,加强社区服务.
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