3378.06 - Illumination and special effects of billboards.
A. For billboards located no more than 500 feet from a residential use or institutional district, the following limitations shall apply:
1. Illumination of a billboard shall be limited to the hours between 6:00 a.m. and 11:00 p.m.
2. No part of a billboard display shall project perpendicularly more than 12 inches from the plane of the sign face.
B. Where a billboard is located more than 500 feet from a residential use or institutional district, illumination and special effects in compliance with the provisions of this section may be utilized with no time restriction.
C. The following regulations apply to all billboards with special effects:
1. Allowed billboard special effects shall be limited to the following visual effects: bare bulb illumination, a time and temperature device and/or message center, and a three-dimensional display.
2. All parts of a billboard special effect display shall be contained within the boundaries of the sign faces, including any allowed embellishment.
3. A billboard utilizing a copy change procedure shall display each individual message a minimum of eight seconds.
4. The images and messages displayed must be static, and the transition from one static display to another must be instantaneous without any transition effects. Transition effects include wipes, fades, or other special effects.
5. Each automatic changeable copy billboard shall be equipped with a light sensing device that automatically adjusts the brightness of the billboard as ambient light conditions change.
6. Each automatic changeable copy billboard shall be operated with monitoring and methods in place that shall either turn off the display, or show a full black image on the display, in the event of a malfunction that affects more than 50 percent of the billboard face.
7. No automatic changeable copy billboard shall exceed a brightness level of 0.3 foot-candles above ambient light as measured using a foot-candle (Lux) meter at a pre-set distance in accordance with the following procedure:
a. At least 30 minutes past sunset, record the ambient light while the sign is off or displaying all black copy, or with the sign's illumination blocked.
b. The light meter shall be held five feet above the finished grade in front of the billboard.
c. The meter shall be aimed toward the center of the automatic changeable copy billboard face.
d. From the same location, a second reading shall be recorded while the billboard display is on and not blocked.
8. The measurement distance shall be determined as shown in Table 2, which is derived and generalized from the formula; (the square root of) (the automatic changeable copy area times 100).
Table 2. Distances from which to measure the brightness of automatic changeable copy billboards.
Area of automatic changeable copy in square feet. | Measurement distance in linear feet
Up to 100 square feet | 100 feet
101 to 300 | 150 feet
301 to 500 | 200 feet
501 to 680 | 250 feet
9. If the difference between the measurements is 0.3 foot candles or less, the brightness is properly adjusted; otherwise, the billboard must be adjusted to comply with the brightness adjustment standard set forth above.
10. Existing automatic changeable copy billboards. All automatic changeable copy billboards lawfully in existence prior to the effective date of Ordinance No. 0170-2014 shall conform to the requirements in 3378.06(C)(4) through (9) of this subsection within one year of the effective date of the ordinance from which this section is derived.
11. No part of a three-dimensional billboard display shall project perpendicularly more than 36 inches from the plane of the sign face.
12. A revolving or rotating billboard shall not be permitted, except that elements forming a sign face may rotate as part of a copy change procedure.
13. Auditory effects, including music, shall not be permitted as part of any billboard display.
(Ord. 2837-96 § 6 (part); Ord. No. 0170-2014, § 10, 7-28-2014)