Guangzhou requires the use of LED lamps for new road lighting projects and street lighting energy-saving renovation projects. The LED street lamp is a directional illumination source with low scattering rate and high luminous efficiency. The luminaire efficiency can reach more than 95%, and the luminescence spectrum of the luminaire is concentrated in the visible part. With the promotion and use of LED lamps in the city, road lighting has effectively reduced light pollution while meeting lighting and energy conservation requirements.
Landscape lighting. According to the relevant regulations of the “Guangzhou Urban and Rural Lighting Management Measures”, Guangzhou City issued the “Guangzhou Urban Landscape Lighting Special Plan (2015-2020)” to control the source lighting of new urban nightscapes to ensure the construction, expansion, and reconstruction of buildings in the future. Set according to the requirements of the landscape lighting special plan. At the same time, from the spatial pattern, the urban landscape lighting area was divided into 1772 square kilometers, and a unified lighting control rule was established. The upper limit or range of control indicators such as contrast, brightness, color temperature, color, and dynamics was given to prevent excessive lighting development. It is required that the night lighting design should strictly control the construction (structure) sky laser light to avoid and reduce light pollution.
In addition, the opening and closing of urban landscape lighting facilities in key areas will be gradually controlled. At the same time, the opening hours of landscape lighting facilities and holidays will be stipulated, which will help control light pollution. The opening hours of Guangzhou’s landscape lighting facilities are: from April 1 to September 30, daily from 19:30 to 22:30; from October 1 to March 31, daily from 19:00 to 22: 30; Key areas are extended to 23:00 during traditional festivals and major events.
Outdoor advertising. Guangzhou made detailed regulations on the lighting and lighting of outdoor advertising, put forward relatively complete requirements for light interference control, and standardized the setting of architectural glass curtain wall, which is conducive to reducing light pollution of the glass curtain wall. At the same time, it also strengthened the review and supervision of the release of outdoor advertising content.