CHAPTER I GENERAL PROVISIONS Article 1 (Purpose) The purpose of this Ordinance is to improve the quality of life of citizens, protect ecosystems, and save energy, by providing for matters delegated by the Prevention of Light Pollution due to Artificial Lighting Act and other matters necessary for managing the formation of good light.

Article 2 (Definitions) The definitions of terms used in this Ordinance shall be as follows:
1. The term "space lighting" means devices that emit light and accessory mechanisms illuminating a specific space to facilitate safe and pleasant night time activities;
2. The term "advertising lighting" means devices that emit light and accessory mechanisms installed on an outdoor advertisement defined in subparagraph 1 of Article 2 of the Outdoor Advertisements, etc. Control Act, or illuminating such outdoor advertisement for advertising purposes;
3. The term "decorative lighting" means devices that emit light and accessory mechanisms installed on the exterior of a building (referring to a building defined in Article 2 (1) 2 of the Building Act; hereinafter the same shall apply), structure, sculpture, or the natural environment, etc. or illuminating the exterior thereof, with the aim of decorating such building, structure, sculpture, or the natural environment, etc.;
4. The term "decorative lighting on a media facade" means a means of lighting to integrate a building and illumination, which adjusts the brightness and color of light and makes the movement of light possible using LED illumination, beam projector, etc.;
5. The term "light festival" means a light festival creating an aesthetic and fantastic atmosphere using electric light bulbs, electric lamps, or IT technology, etc.

Article 3 (Scope of Lighting Fixtures) This Ordinance shall apply to any of the following lighting fixtures:
1. Space lighting under subparagraph 1 of Article 2 of the Enforcement Decree of the Prevention of Light Pollution due to Artificial Lighting Act (hereinafter referred to as the "Decree");
2. Advertising lighting under subparagraph 2 of Article 2 of the Decree;
3. Decorative lighting under subparagraph 3 of Article 2 of the Decree.

Article 4 (Responsibilities and Duties of Mayor, etc.) (1) The Mayor of the Seoul Metropolitan Government (hereinafter referred to as the "Mayor") shall formulate and implement policies on the prevention of light pollution, in consideration of local characteristics of districts under his/her jurisdiction and shall take measures, including provision of information on light pollution to the citizens of Seoul Metropolitan City (hereinafter referred to as "citizens").
(2) Citizens shall cooperate in policies on the prevention of light pollution and shall endeavor to prevent light pollution.

CHAPTER II FORMULATION, ETC. OF PLAN FOR PREVENTION OF LIGHT POLLUTION Article 5 (Formulation of Plan for Prevention of Light Pollution) (1) The Mayor shall formulate and implement a plan for the prevention of light pollution of districts under his/her jurisdiction every five years pursuant to Article 5 (1) of the Prevention of Light Pollution due to Artificial Lighting Act (hereinafter referred to as the "Act").
(2) A plan for the prevention of light pollution under paragraph (1) shall include the following:
1. Matters referred to in Article 2 (2) 1 through 6 of the Enforcement Rules of the Prevention of Light Pollution due to Artificial Lighting Act (hereinafter referred to as the "Enforcement Rules of the Act")
2. Matters concerning energy conservation and reduction of carbon dioxide from urban lighting;
3. Matters concerning the formulation of a night landscape plan and night landscape guidelines.

Article 6 (Good Light Committee) (1) The Mayor shall establish the Good Light Committee of Seoul Metropolitan City (hereinafter referred to as the "Committee") to deliberate on important matters concerning the light pollution control pursuant to Article 7 (1) of the Act.
(2) The Seoul Citizen Design Committee under Article 7 of the Seoul Metropolitan Government Ordinance on Urban Design may perform functions of the Committee under paragraph (1) on its behalf.

Article 7 (Functions of Committee) The Committee shall deliberate on the following:
1. Matters concerning the formulation and implementation of a plan for the prevention of light pollution under Article 5 of the Act;
2. Matters concerning the formulation and implementation of a plan for the management of light environment under Article 5 of the Decree;
3. Matters concerning the designation of lighting environment management districts under Article 9 of the Act and the revocation or alterations of designation of lighting environment management districts under Article 10 of the Act;
4. Matters concerning the improvement of statutes and systems for the efficient promotion of a plan for the prevention of light pollution;
5. Matters concerning the bearing of expenses incurred in promoting programs for the prevention of light pollution;
6. Matters concerning the strengthening of permissible levels of light emission under Article 6 of the Enforcement Rules of the Act;
7. Matters concerning exemption from the application of permissible levels of light emission under Article 12 (1) of the Act;
8. Other matters prescribed by statutes and municipal ordinances to be deliberated by the Committee and matters the chairperson deems necessary for the prevention of light pollution and management of the formation of good light.

Article 8 (Designation of Lighting Environment Management Districts) (1) The Mayor may designate lighting environment management areas as follows, to prevent light pollution and appropriately manage urban lighting:
1. Class 1 lighting environment management districts: Districts where excessive artificial lighting has or is likely to have an adverse effect on the natural environment;
2. Class 2 lighting environment management districts: Districts where excessive artificial lighting has or is likely to have an adverse effect on agriculture, forestry, and fisheries, and the growth of animals and plants;
3. Class 3 lighting environment management districts: Districts where excessive artificial lighting has or is likely to have an adverse effect on residential life of people, which require artificial lighting for the safety and convenience of people;
4. Class 4 lighting environment management districts: Districts where excessive artificial lighting has or is likely to have an adverse effect on a pleasant and healthy lifestyle of people, which require at least a certain level of artificial lighting for commercial activities.
(2) Where the objective of designation of a lighting environment management area designated pursuant to paragraph (1) becomes irrelevant, or it is necessary to alter a lighting environment management area, the Mayor may revoke the designation of a lighting environment management area or alter such designation, after deliberation by the Committee.
(3) Necessary matters, such as detailed criteria for designating management areas referred to in subparagraphs of paragraph (1), an upgraded luminous flux rate for each management area, the brightness of building surfaces, and permissible levels of light emission, shall be prescribed by municipal rules.

Article 9 (Formulation of Plans for Management of Light Environment) (1) The Mayor shall formulate a plan for the management of light environment to manage the light environment of lighting environment management districts in an eco-friendly manner, pursuant to Article 5 of the Decree.
(2) Where the Mayor formulates a plan for the management of light environment under paragraph (1), he/she shall reflect photometric data of lighting fixtures tested by a professional institution in the relevant plan, for traffic safety and the prevention of light pollution.

Article 10 (Exemption from Application of Permissible Levels of Light Emission) When the Mayor determines whether to approve exemption from the application of permissible levels of light emission of lighting environment management districts pursuant to Article 6 (2) of the Decree, he/she shall submit it for deliberation by the Committee.

Article 11 (Environmental Impact Assessments of Light Pollution, etc.) (1) The Mayor shall conduct environmental impact assessments of light pollution pursuant to Article 16 of the Act and may seek advice on the following from experts in such cases:
1. Detailed matters, such as the subject matter and scope of assessment, under Article 10 (1) 3 of the Enforcement Rules of the Act;
2. Matters concerning the selection of districts subject to environmental impact assessments of light pollution among the districts under his/her jurisdiction;
3. Where reconciliation is required due to a dispute between the parties interested in light pollution;
4. Other matters necessary to conduct assessments, such as procedures for conducting environmental impact assessments of light pollution.
(2) The Mayor may require an institution or an organization deemed to have professional manpower, equipment, etc. to conduct some affairs relating to environmental impact assessments of light pollution on his/her behalf.

CHAPTER III MANAGEMENT OF FORMATION OF GOOD LIGHT Article 12 (Night Landscape Plans and Night Landscape Guidelines) The Mayor shall formulate a night landscape plan and night landscape guidelines to prevent light pollution, such as glare and an intrusive light emitted from outdoor lighting fixtures, and to form good light.

Article 13 (Formulation, etc. of Lighting Plans) (1) Any person who intends to install, improve, and increase lighting fixtures under subparagraphs 1 and 3 of Article 3 shall formulate a lighting plan by reflecting standards for installation and management of lighting fixtures under Article 15 of the Act, permissible levels of light emission under Article 6 (1) of the Enforcement Rules of the Act, and night landscape guidelines under Article 12, before he/she installs any lighting fixture.
(2) With regard to a lighting plan formulated pursuant to paragraph (1), matters specified in the attached Table shall undergo deliberation by the Committee.
(3) The Mayor may give direction or advice so that lighting fixtures can be installed and managed appropriately pursuant to paragraph (1).

Article 14 (Management of Formation of Good Light, etc.) (1) Any person who intends to install and manage lighting fixtures in outdoor space shall observe standards for installation and management of lighting fixtures under Article 15 of the Act, permissible levels of light emissions under Article 6 (1) of the Enforcement Rules of the Act, and night landscape guidelines under Article 12, to form good light.

Article 15 (Management of Turning on and Turning off Lights) (1) Timing for turning on lights of street lighting, security lighting in residential areas, and space lighting in parks, etc. shall be 15 minutes after sunset, and timing for turning off lights shall be 15 minutes before sunset, through integrated or individual management: Provided, That where harm to the safety of citizens is expected due to changes in weather conditions, such as fog or rainfall, a management agency may adjust timing for turning on and turning off lights.
(2) The head of a public office building may specifically determine the timing for turning on and turning off lights installed on walls and lighting installed around the public office building, in consideration of the night environment, security, etc.
(3) Decorative lighting installed for landscaping of buildings, bridges, structures, etc. shall be turned on 30 minutes after sunset and turned off not later than 23:00, and the duration of production of image using decorative lighting on a media facade shall be within 20 minutes per hour, in principle: Provided, That the timing for turning on and off decorative light and the duration of production of image may be adjusted after deliberation by the Committee, with regard to a special tourist zone designated pursuant to Article 70 of the Tourism Promotion Act and places where decorative lighting is installed and managed during a definite period for the purpose of domestic and international events, a light festival, or the promotion of tourism, etc.
(4) In principle, a sensor shall be installed for lighting under paragraphs (1) through (3) so that lights may be turned on and off automatically.

Article 16 (Maintenance of Uniform Levels of Brightness of Street Lighting) The Mayor shall endeavor to maintain the uniform level of brightness (referring to the uniform level of brightness distribution) of street lighting meeting standards for street lighting under the Korean Industrial Standards, for the maintenance of the ideal road traffic environment and the safety of drivers.

CHAPTER IV SUPPORT SYSTEM Article 17 (Lighting Support Programs) (1) The Mayor may provide administrative and financial support to persons who improve or upgrade the following lighting facilities and night landscape:
1. Where a person improves or upgrades lighting fixtures that have an important effect on the natural environment and residential environment in lighting environment management districts;
2. Where a person implements a project for the formation or improvement of night landscape under Article 13 (1) 3 of the Landscape Act;
3. Where a person forms or improves night landscaping by entering into a landscape agreement pursuant to Article 16 of the Landscape Act.
(2) Any person who intends to obtain support under paragraph (1) shall submit a project plan including a lighting plan under Article 13 (1) to the Mayor, and the scope of and procedures for financial support and other relevant matters shall be prescribed by municipal rules.

Article 18 (Selecting Winners of Good Lighting Prize and Awarding Prize, etc.) (1) The Mayor may select a person who has made an outstanding contribution to the prevention of light pollution and the formation of excellent decorative lighting and award a Good Lighting Prize to the person.
(2) Procedures, etc. for selecting a winner of a Good Lighting Prize and awarding the Prize shall be prescribed by municipal rules.

ADDENDA <Ordinance No. 4990, Jul. 15, 2010>
(1) (Enforcement Date)
This Ordinance shall enter into force on the date of its promulgation.
(2) (Transitional Measures)
Lighting fixtures already installed and in operation as at the enforcement date of this Ordinance shall be deemed to have been installed in accordance with this Ordinance.
ADDENDUM <Ordinance No. 5733, Jul. 17, 2014>
This Ordinance shall enter into force on the date of its promulgation.