Interior neon, LED or electronic light signs.
(a) With the exception of any neon, LED or electronic light sign which was, and can be conclusively established by the owners thereof to have been, in existence prior to June 24, 1986, all neon, LED or electronic light signs within the City of Northfield must be in compliance with the requirements of this chapter. No neon, LED or electronic light sign shall be permitted to be placed in any zone within the City of Northfield other than the C-B Community Business, the O-P Office Professional, the O-PB Office Professional Business and the R-C Regional Commercial Zones.
(b) All neon, LED or electronic light signs shall be subject to the provisions of Subsections
A through
G of this section and shall be further subject to the following requirements:
[1] Every neon, LED or electronic light sign requires a sign permit.
[2] No neon, LED or electronic light sign may revolve, flash or display movement or the illusion of movement.
[3] All neon, LED or electronic light signs must be installed within and attached to the area of the interior window of the business premises in which they are installed.
[4] No neon, LED or electronic light signs shall be installed within doorways nor attached to any glass within a door or door frame; nor shall any neon, LED or electronic light sign be permitted to be installed in any window area other than on the first floor of the business premises.
[5] The area of any neon, LED or electronic light sign shall not exceed 25% of the total window area in which such neon, LED or electronic light sign is to be installed. For purposes of this section, the limitation is imposed upon the aggregate window area of the specific window in which the neon, LED or electronic light sign is placed. The aggregate of all window area of a premises cannot be used to calculate the size of a neon, LED or electronic light sign permitted to be installed within a single window. A window shall be defined as the area of glass within a frame or panel.
[6] The area of the neon, LED or electronic light sign to be measured in calculating the 25% limitation shall be calculated by measuring around the exterior edges of a framed or enclosed sign; or by measuring the area utilized by isolated words and/or symbols, which shall include the background area as if the sign had been enclosed or framed and had been squared off at the highest and widest points, regardless of whether the neon, LED or electronic light sign is open or enclosed; but excluding any bracing incidental to the display itself and which is not made of neon, LED or electronic light or otherwise self-illuminated.
[7] Whenever a parcel in the C-B, O-PB or R-C Zone is bordered by more than one street, road or highway, neon, LED or electronic light signage may be permitted to be installed in compliance with the requirements of this chapter within the first-floor window(s) facing each such street, road or highway upon which the subject business within said parcel fronts; unless prohibited by Subsection
L(3)(b)[8] of this section.
[8] No window within any structure situated in a zone within which neon, LED or electronic light signs are permitted shall be eligible for the placement or installation of any neon, LED or electronic light sign if such window faces or fronts upon an adjacent residential district (R-1, R-1A, R-2, R-2, R-SC, AH) as shown on the Zoning Map of the City of Northfield, regardless of whether such residential district is separated by a street, road, or highway. This limitation shall not apply, however, unless the residential district is directly adjacent to the property upon which the structure is located or immediately adjacent to the street, road or highway between the residential district and such structure.
[9] When neon, LED or electronic light signs have been placed in compliance with this section, no other temporary or permanent signs shall be placed within any window in which such neon, LED or electronic light sign has been installed. This prohibition is intended to apply to all types of temporary or permanent signs, whether constructed of paper, cardboard, wood, or any other material whatsoever.
Electronic message boards; purpose and intent.
More businesses desire to utilize advancements in sign technology which permit signs to change content electronically which are known as “electronic message boards,” e.g., LED-type signs. These electronic message boards may adversely impact adjacent areas unless they are regulated in a reasonable fashion. The intent and purpose of this subsection is to establish standards and regulations for electronic message boards to minimize potential adverse impacts, preserve the character of adjacent areas to the extent practical and reasonable and minimize potential traffic safety concerns.
(a) Electronic message boards shall be permitted uses in the N-B Neighborhood Business; C-B Community Business; and R-C Regional Commercial Zones.
(b) An electronic message board may be placed on a freestanding sign.
(c) On an electronic message board:
[1] Text and messages shall be limited to no more than four lines, shall be nonmoving and shall not contain any animation.
[2] Electronic message boards may display nonmoving pictures, graphics or logos of businesses and/or products sold on premises.
[3] A maximum of one message change every 60 seconds shall be permitted. All transitions between messages shall be by way of nonmoving fades or cuts.
(d) Electronic message boards must conform to all dimensional, location and placement standards as prescribed for nonelectronic message boards in the applicable zoning districts. In no case shall an electronic message board sign face exceed 24 square feet in size.
(e) Electronic message boards are required to have an automated device to be able to dim the sign to the requirements of this chapter. This may be a photocell or a schedule programmed into or by the electronic message board's control system. From sunset to sunrise, an electronic message board shall be controlled to restrict the brightness /luminance of the display to 50 nits or cd/m2, measured while a 100% plain white image is displayed on the electronic message board. Owners or tenants of properties with electronic message boards are required to display a 100% plain white image for measurement upon reasonable written notice and demand from the appropriate enforcement agent for the City of Northfield. The measurement sensor will be positioned to integrate the emission of all colors on the electronic message board, or a diffuse media will be used, to mix the colors of the electronic message board emitters allowing an accurate measurement. If diffusion media is used to accomplish the measurement, a correction factor allowing for the transmission loss of the diffusion will be added to the measurement. This measurement is to be taken no more than six inches from the front of the electronic message board display, on the center axis of the electronic message board's brightest light emitting devices.
(f) If the Code Enforcement Officer finds that the electronic message board causes a glare, illuminates neighboring buildings or otherwise impairs the vision of drivers of motor vehicles, the property owner and/or permittee of the electronic message board, within 24 hours of a notice by the City, will reduce the intensity of the electronic message board to a level acceptable to the City.
(g) Preexisting nonconforming signs may not be converted to electronic message boards unless approved by the appropriate land use board and the proposed electronic message board and structure completely conform to all sign regulations, as set forth in Subsection
L(4)(d).
(h) Only static images may be displayed on electronic message boards. No movement or animation is permitted in the message, whether same consists of text or images. Transitions between messages can only be by way of dissolves or cuts only. There shall be no wipes or moves. Time and temperature may be displayed on the sign. An electronic message board would not be a violation of this chapter should the time or temperature change during the display of the information.
(i) The content of the electronic message board should reflect the character of the business and respect the environs of the community. The images should be clearly readable and understandable to prevent distraction to drivers. Darker backgrounds should be scheduled during evening hours to facilitate reading and help maintain night vision for drivers.
(j) The liability, content, control and ownership of the electronic message board is strictly limited to the owner/lessee of the property on which the electronic message board is constructed. All advertisement on the electronic message board shall strictly be for products or services offered by the business owner/lessee on the property on which the electronic message board is constructed.
(k) No electronic message board may be used on a portable vehicle or trailer.