8-13 NUISANCES: On site lighting

1. All outdoor lighting devices or fixtures shall be shielded in such a manner that light rays emitted by the device or fixture, whether directly from the lamp or indirectly from the fixture, are restricted to regions below an angle 15 degrees beneath the horizontal plane running through the lowest point on the fixture where light is emitted. No significant intensity of light shall be emitted from the fixture horizontally, nor above the horizon, nor above the region defined above. All outdoor lighting shall be downward directed except where specified otherwise in this chapter. Luminaries meeting restricted emission requirements are sometimes described commercially as hooded, shielded, or full cut- off fixtures; however, not all luminaries so designated meet the above angular requirement. 2. On-site lighting shall not penetrate beyond the property line in such a manner as to annoy or interfere with the use of adjacent properties. If a light is determined to be in violation, the owner shall take appropriate corrective action to assure compliance. 3. All outdoor light fixtures maintained on public or private property shall be turned off between 11:00 PM local time and sunrise except when used for: 1. commercial and industrial uses such as sales, assembly and repair areas where business is conducted after 11:00 PM, but only while the business is open to the public; 2. illuminated advertising signs on the premises of a business while it is open to the public; 3. lighting necessary for security purposes or to illuminate walkways or roadways; 4. illuminated billboards; 5. a recreational use that continues after 11:00 PM, but only for so long as such use continues; and 6. official school activities that begin at 6:00 AM. 4. The outdoor operation of searchlights, lasers or other high-intensity beams is prohibited. 5. No lighting fixture or device may be operated in such manner as to constitute a hazard or danger to persons or to safe vehicular operation. 6. Illuminating fixtures for advertising or other signs shall be such that the illumination is confined to the area of the sign or billboard; no significant direct spill-over is permitted. Under no conditions may signs or billboards be illuminated from below. Any such illuminating fixture shall be placed above its respective sign or billboard such that the secondary or specula reflected light from the surface of the sign or billboard is directed down toward the ground. 7. No direct or sky-reflected glare, whether from flood lights or from high temperature processes such as combustion or welding or otherwise, shall be permitted to be visible at the points of measurement specified in Section 8-7. 8. Outdoor recreational facilities designed for specifically scheduled sporting events are exempt from the specific shielding requirements. Lighting for outdoor recreational facilities shall be so designed, installed and operated as to confine at least 90 percent of the illumination to the recreational area. Recreational facility fixtures shall be on elevated poles or structures so that illumination is directed downward. No significant illumination may extend above a horizontal plane from the lighting fixture. Illumination from recreational facility fixtures shall be shielded to minimize glare extending toward roadways or other places that causes an impairment of motorists’ vision. All such recreational facilities shall have either: 1. automatic shut-off timer devices; or 2. a designated official with responsibility for extinguishing the illumination at close of the recreational activity. 9. In situations of flags, statues or other top-of-pole mounted objects which cannot be illuminated with down-lighting, upward lighting may be used only in the form of one narrow-cone spotlight which confines the illumination to the object of interest. 10. Decorator lamps having smaller than 25 watt rating, or strings of up to 25 such lamps, used for holiday decorations are exempt from the requirements of this chapter .