Study on integrated night lighting for crime prevention, disaster prevention and traffic safety in residential areas

本研究旨在厘清居住区能见度与照度的关系。为此，首先进行了路灯照度和安装情况的调查，然后进行了能见度和照度的实验。结果，得出了以下结论。(1)即使在良好的生活环境中，照度也低于照明标准。(2)有照度低的地方，也有高照度的地方，所以不是所有地方都能达到均匀。(3)甚至超过照明标准的地方，也有能见度不能保证的地方。基于这些发现，我们认为有必要对街道照明的评估方法和照明标准进行审查，包括对测量技术的审查。

The purpose of this study is to clarify the relationship of visibility and illuminance in residential areas. For this purpose, firstly the survey of illuminance and installation of street lighting situation is carried out, secondly the experiment on the visibility and illuminance was carried out. As a result, the following findings were obtained. (1)Even in a good living environment,the illuminance is below the lighting standard. (2)There are places with low illuminance and places with high illuminance, so the uniformity is not achieved in all areas.(3) Even more than the lighting standard, there aer places where visibility is not ensured. Based on these findings, we think that it is necessary to review the evaluation methods of street lighting and lighting standard including a review of the measurement technique.