4.9.3. PARKING AREA LIGHTING.
A. Shielding of Lights in Parking Areas. The following standards apply to all multifamily developments and non-residential developments in Residential zone districts, and to all uses in all mixed-use and non-residential uses.
1. Lighting fixtures for canopies or similar structures shall be flush-mounted or recessed above the lower edge of the canopy, and shall be equipped with flat lenses.
2. Lighting fixtures on a lot adjacent to a Residential district or residential use shall shield the light source from sight from all adjacent residential uses.
B. Illuminance.
1. Maintained average illuminance values in parking areas shall be no less than two foot-candles. Illuminance shall be measured using only the light produced on-site.
2. The acceptable uniformity ratio for lighted areas shall comply with recommended ranges adopted by the Illumination Engineering Society of North America (IESNA) for low, medium, and high activity areas.
C. Hours of Lighting.
1. All luminaires, except those required for security, shall be extinguished within one hour after the end of business closing and remain extinguished until one hour before business opening. A maximum of 25 percent of the total luminaires used for parking lot illumination may remain in operation during this period to provide security.
2. Parking area lighting during off-business hours need not conform to the otherwise applicable average-to-minimum uniformity ratio in Section 146-4.9.3.B. (Ord. No. 2019-49 § 1, 08-19-2019)