(a) No illuminated sign which has an effective area of 400 square feet or less shall have a luminance greater than 300 footlamberts, nor shall any such sign have a luminance greater than 300 footlamberts for any portion of the sign within a circle two feet in diameter. No illuminated sign which has an effective area greater than 400 square feet shall have a luminance greater than 200 footlamberts, nor shall any such sign have a luminance greater than 200 footlamberts for any portion of the sign within a circle of two feet in diameter. The restrictions of luminance in this section shall be determined from any other premise or from any public right-of-way other than an alley.
(b) No illuminated sign nor any illuminated element of any sign, may turn on or off, or change its brightness, if:
(1) the change of illumination produces an apparent motion of the visual image, including but not limited to illusion of moving objects, moving patterns or bands of light, expanding or contracting shapes, rotation or any similar effect of animation;
(2) the change of message or picture occurs more often than once each three seconds for those portions of a sign which convey time or temperature, or once each 20 seconds for all other portions of a sign; or
(3) a portion of the sign, within a circle of two feet in diameter, has a luminance greater than 200 footlamberts when all elements of the sign are fully and steadily illuminated.
(c) No sign or any part of any sign may move or rotate at a rate more often than once each 10 seconds, or change its message at a rate more often than once each 20 seconds, with the exception of wind devices, the motion of which is not restricted. No sign may move, rotate or change its message at any rate if any of its elements or any illuminated portion within a two-foot circle has a luminance greater than 200 footlamberts.
(d) Subdivision signs are subject to the following restrictions:
(1) Subdivision signs are exempt from compliance with the provisions of Section 51A-7.304, “Detached Signs,” of this article.
(2) The maximum effective area of each subdivision sign may not exceed 40 square feet.
(3) The maximum number of subdivision signs permitted is two signs per street entrance into the business park.
(4) Subdivision signs may not project more than three inches from the surface of the structure.
(5) Subdivision signs may not be internally illuminated.
(6) The highest part of a subdivision sign may not exceed six feet in height.
(7) Subdivision signs must be landscape signs or monument signs. For purposes of this subsection, “landscape sign” means a sign that is part of a single landscape design that creates a base for the sign in conjunction with a retaining wall or an open space created with the use of water or planting material, and “monument sign” means a detached sign applied directly onto a ground-level support structure (instead of a pole support) with no separation between the sign and the ground.
(8) Subdivision signs may be located within the public right-of-way if a license for use of the public right-of-way is obtained pursuant to the requirements of the Dallas City Code.
(9) Subdivision signs may only contain the name of the business park.
(10) The application for a subdivision sign permit must be supported by the owner of property abutting the proposed subdivision sign, if any, and two-thirds of the property owners within 300 feet of the proposed subdivision sign. (Ord. Nos. 19455; 19704; 20359; 20495; 20927; 24232; 25455)