**A Comparative Study on Current Outdoor Lighting Policies in China and Korea: A Step toward a Sustainable Nighttime Environment**

### **Wu Guanglei, Jack Ngarambe and Gon Kim \***

Department of Architectural Engineering, Kyung Hee University, Yongin 17104, Korea **\*** Correspondence: gonkim@khu.ac.kr

Received: 22 March 2019; Accepted: 16 July 2019; Published: 23 July 2019

**Abstract:** Light pollution is a serious environmental issue with many adverse effects on human health and the ecosystem as a whole. Accordingly, many countries have issued laws and regulations to limit the effects of artificial lighting at night (ALAN). The Republic of Korea and China are among the few countries that have drafted laws to curb light pollution. In the present study, we gathered data related to light pollution regulations and ordinances in both China and Korea. We then carried out a comparative analysis of the light pollution laws of both countries. We found that, although the two countries share a similar socio-economic background, they have different approaches to the issue of light pollution. The information provided in this study serves as a guideline to countries that wish to develop their own light pollution policies. In addition, the conclusions provided in our study offer potential improvements to local and national light pollution policies in both the Republic of Korea and China.

**Keywords:** light pollution; ULOR; lighting intensity; outdoor lighting measurements; local laws; landscape lighting; decorative lighting
