The following words, terms and phrases, when used in this section, shall have the meanings ascribed to them in this subsection, except where the context clearly indicates a different meaning:
ACREAGE, NET The area of a parcel being developed for a development project including the open space required by the zoning district.
CLASSIFICATIONS OF LIGHTING Lighting shall be classified in one of the following categories:
A. Class 1 "functional" lighting. All outdoor lighting used for, but not limited to, outdoor sales or eating areas, assembly, advertising and other signs, recreational facilities and other similar applications where color rendition is important to preserve the effectiveness of the activity.
B. Class 2 "safety" lighting. All outdoor lighting used for, but not limited to, illumination for walkways, roadways, equipment yards, parking lots and outdoor security where general illumination for safety or security of the grounds is the primary concern.
C. Class 3 "decorative" lighting. Any outdoor lighting used for decorative effects including, but not limited to, architectural illumination, flag and monument lighting, and illumination of trees, bushes, etc.
D. Multiclass lighting. Any outdoor lighting used for more than one purpose, such as security and decoration, such that its use falls under the definition of two or more classes as defined for Class 1, 2 and 3 lighting. All multiclass lighting shall comply with the most restrictive class of which it falls under.
DEVELOPMENT PROJECT Any residential, commercial, industrial or mixed use subdivision plan or development plan that is submitted to the Village for approval.
DIRECT ILLUMINATION Illumination resulting from light emitted directly from a lamp or luminaire, not light diffused through translucent signs or reflected from other surfaces such as the ground or building faces.
FOOTCANDLE A unit of light expressed in lumens per square foot.
FULLY SHIELDED FIXTURE or FULL CUTOFF FIXTURE An outdoor light fixture shielded in such a manner that 100% of all light emitted by the fixture, either directly from the lamp or indirectly from the fixture, is projected below the horizontal plane as determined by photometric test or certified by the manufacturer.
GLARE Intense light from an illumination source that may result in visual impairment or discomfort to the average person. Lighting installed in conformance with this article should not be considered to cause glare unless unforeseen circumstances or conditions are discovered during or after installation.
HEIGHT The height of a light structure shall be the vertical distance between the uppermost extremity of any light structure, pole or supporting member and the grade level.
LUMEN The unit used to measure the actual amount of light that is produced by a lamp. For all lamp types and sources, the initial output, as defined by the lamp or source manufacturer, is the value to be considered.
LUMINAIRE The complete lighting unit consisting of a lamp or lamps together with the parts designed to distribute the light, to position and protect the lamps and to connect the lamps to the power supply.
MEASUREMENT For the purposes of this article, unless otherwise stated, illumination levels shall be measured at a point three feet above grade with the measuring device aimed directly at the light source(s) being measured. Measurements shall be taken using baffles or shields to separate the sources(s) under review from other existing or ambient sources such as streetlights, in a manner that eliminates to the greatest extent possible other light sources.
OPAQUE Opaque means that material must not transmit light from an internal illumination source.
OUTDOOR LIGHT FIXTURES Outdoor electrically powered illuminating devices, outdoor lighting or reflective surfaces, lamps and similar devices, either permanently installed or portable, which are used for illumination or advertisement. Such devices shall include, but are not limited to, linear strip lights, search lights, spotlights and flood lights for buildings and structures; recreational areas; parking lot areas; landscape and architectural lighting; signs (advertising or other); or product display areas.
OUTDOOR LIGHT OUTPUT, TOTAL The maximum total amount of light, measured in lumens, from all outdoor light fixtures. For all lamp types and sources, the initial output, as defined by the lamp or source manufacturer, is the value to be considered.
PARTIALLY SHIELDED FIXTURE or CUTOFF FIXTURE An outdoor light fixture shielded in such a manner that more than zero but less than 10% of the light emitted directly from the lamp or indirectly from the fixture is projected at angles above the horizontal, as determined by photometric test or certified by the manufacturer.
TEMPORARY LIGHTING Lighting that does not conform to the provisions of this article and which will not be used for more than one thirty-day period within a calendar year, with one thirty-day extension. Temporary lighting is intended for uses that by their nature are of limited duration; e.g., civic events, or construction projects, not including exempt lighting listed in §
245-151. Temporary lighting requires approval by the
Zoning Administrator.
UNIFORMITY RATIO The average illuminance shall not exceed minimum values by more than the product of the minimum value and the specified ratio.
USE, ABANDONMENT OF The relinquishment of a property, or the cessation of a use or activity by the owner or tenant for a period of one year, excluding temporary or short term interruptions for the purpose of remodeling, maintaining, or otherwise improving or rearranging a facility. A use shall be deemed abandoned when such use is suspended as evidenced by the cessation of activities or conditions that constitute the principle use of the property.
WATT The unit used to measure the electrical power consumption of a lamp, or when describing a fixture, the fixture input wattage before ballast losses.
All nonexempt outdoor lighting fixtures shall have full shielding to prevent direct view of the lamp or reflector as viewed from anywhere along the property line or above the horizontal, except for the following:
A. Class 1 and Class 3 lighting fixtures with an initial lamp output at or below 500 lumens per fixture may be unshielded provided that the fixture is screened from public view.
B. Class 1 and Class 3 lighting fixtures with an initial lamp output at or below 1,000 lumens per fixture may be partially shielded provided that the fixture is screened from public view.
Total outdoor lighting lumen output shall not exceed the limits in Table 245-137, given in lumens per acre. The following shall be included in this limit:
A. Indoor lighting, located within 12 feet of window glass, that is used for or contributes to illumination of displays, merchandise or signage shall be included in the total outdoor light output, by including 25% of the contributing as though they produced only 1/4 of the lamp's rated lumen output. If the indoor lighting is directed through the window glass or otherwise used for exterior illumination, then the full 100% of the lamp's rated lumen output shall be included.
B. Outdoor lighting fixtures that are fully shielded and installed under canopies, roof eaves and building overhangs are counted toward these limits according to the following:
(1) Outdoor light fixtures installed under canopies, building overhangs, or roof eaves where the center of the lamp or luminaire is located at least five feet but less than 10 feet from the nearest edge of the canopy or overhang are to be included in the total outdoor light output, by including 25% of the contributing lamp's rated lumen output;
(2) Outdoor light fixtures located under the canopy and 10 or more feet from the nearest edge of a canopy, building overhang, or eave are to be included in the total outdoor light output, by including 10% of the contributing lamp's rated lumen output;
(3) Outdoor lighting fixtures located under the canopy and less than five feet from the nearest edge of the canopy, building overhang, or eave, are to be included in the total outdoor light input by including 100% of the contributing lamp's rated lumen output.
Table 245-137 Total Outdoor Light Output Standards |
---|
Maximum Lumens Per Acre (Initial Lamp Lumens) | Lighting Zone |
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| Zone 3 | Zone 2 | Zone 1 |
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Total (fully shielded plus unshielded) | 125,000 | 100,000 | 50,000 |
Unshielded only (Class 1 and 3) | 10,000 | 10,000 | 4,000 |
Unless otherwise approved in accordance with this section, all luminaries shall be of a full cutoff design and directed so as to confine the area of light dispersion to the property and/or building area that it is intended to illuminate. More specifically, all lighting installations shall conform to the following standards:
A. All luminaries except street lights shall be located, aimed or shielded so as to prevent stray light trespassing across property boundaries, measurable at or below 0.05 footcandle while holding meter perpendicular to and aimed directly at the offending source(s).
B. Where adjacent to nonresidential property, the maximum permitted illumination level located 10 feet within that adjacent property shall be no greater than 0.1 horizontal footcandles.
C. Where adjacent to residential property, the maximum permitted illumination level on a residentially zoned parcel located immediately within that adjacent property shall be no greater than 0.01 horizontal footcandles.
D. Ground-mounted lighting. In order to fully hide the light fixture from public view and to prevent glare and brightness from normal public view, all ground-mounted luminaries designed or intended for purposes of illuminating, signs, flagpoles or other onsite amenities shall be completely screened, at the time of installation, with nonseasonal vegetative cover or other materials as approved by the Plan Commission. Additional louvers or shielding may be required to prevent source brightness and glare from normal public view.
In addition to the requirements of this article, the following uses shall have additional restrictions.
A. Illuminated outdoor recreation facilities:
(1) Shall be subject to a conditional use grant.
(2) Lighting for outdoor recreational facilities including athletic fields, courts, or tracks shall be exempt from the lumens per acre limits of this section.
(3) All lighting installations shall be designed to achieve no greater than the minimal illuminance levels for the activity as recommended by the Illuminating Engineering Society of North America (IESNA RP-6).
(4) Lighting trespass requirements are maintained.
B. Auto display lots.
(1) Lighting for display lots shall be exempt from the lumens per parcel limits of this section.
(2) Total output. The total light output used for illuminating display lots shall not exceed 20 footcandles.
(3) Every display lot lighting system and design shall be certified by a registered engineer as conforming to all restrictions in this section.
C. Service station canopies.
(1) All luminaries mounted on the under surface of service station canopies shall be fully shielded, recessed, and utilize flat glass or flat plastic (acrylic or polycarbonate) covers, with no direct illumination permitted at or above the horizontal plane.
(2) Total output. The total light output used for illuminating service station canopies, defined as the sum of all under-canopy initial lamp outputs in lumens, shall not exceed 20 footcandles. All lighting mounted under the canopy, including but not limited to luminaries mounted on the lower surface of the canopy and auxiliary lighting within signage or panels over the pumps, is to be included toward the total.
(3) No lighting shall be placed on the facade or roof of the canopy.
D. Street lighting installed by private parties (developers and land owners). Where private street lighting is installed, the luminaries shall be fully shielded and shall not exceed 2,700 lumens per fixture. Where private parties install street lighting on streets that are or will become public streets, the luminaries shall be approved by both the Plan Commission and the Public Works and Utilities Committee.
Illumination of landscaping shall utilize diffused or muted lighting, avoid glare, and minimize light trespass and escape beyond landscaping onto neighboring property, streets, or the night sky.
The following types of lighting shall be prohibited except as otherwise approved by the Plan Commission:
A. Swivel-mounted luminaries.
B. Festoon lighting, "string" lighting or any light source erected in such a manner as to be subject to noticeable periodic movement as a result of wind pressure or atmospheric conditions.
C. Any artificial light source that creates glare within the normal range of vision from any public walk or thoroughfare under normal weather conditions.
D. Display of intermittent lights or flashing, blinking, moving lights except as follows:
(1) Where such lights are required by state or federal law.
(2) Where such lighting is of a temporary nature including but not limited to holiday displays and grand opening events.
(3) Where such lighting is part of a sign approved pursuant to Article
VI.
E. Laser source light. The use of laser source light or any similar high intensity light is prohibited.
G. Light intended to illuminate naturally occurring environmental features including but not limited to wetlands, rivers, lakes and dedicated open spaces shall be prohibited except as approved as part of a conditional use grant or public lighting project approved by the Village Board.