Based on results of 2016 EPA light pollution project, this research chose two kinds of LED combo lights included peacock-tail-shaped lamp and octagon-shaped lamp, and studied the impacts of perceived glare and flicker of citizen in Taiwan. Furthermore this report the recommendations of the prevention and the regulations for light pollution. The main tasks include: (1) to perform experiments of subjective perception testsfor glare and flicker at night to build up the borderline between comfort and discomfort (BCD) for both LED combo light sources in the outdoor environment; (2) to conduct field surveys and prove measurement methods of outdoor advertising signs, and suggestions for improving the way of counseling for light pollution sources; (3) to propose predictive improvement and management programs for various light sources according to the international regulations and domestic situation, and assist the Environmental Protection Agency (EPA) in carrying out the follow-up legal operation of the "Guidelines for Light Pollution Prevention and Management (Draft)".

light pollution, glare, flicker, LED combo light, LED octagon-shaped lamp, LED peacock-tail lamp, Guide for the light pollution management and prevention