(1) Any sign constructed or maintained which, by reason of its size, location, movement, coloring or manner of illumination may be confused with or construed as a traffic control device or which hides from view any traffic control device.

(2) Any sign written or placed upon or within a motor vehicle with the primary purpose of providing a sign not otherwise allowed by the sign standards.

(3) Any sign constructed, maintained or altered in a manner not in compliance with the sign standards.

(4) Balloons and banners (pursuant to EC 9.6605 Reconciliation, banners exempt under EC 9.6610(2) and signs permitted as public signs are not included within this prohibition);

(5) Decorative laser signs, search lights, and flashing signs;

(6) Inflatable signs other than balloons;

(7) Portable signs, except as authorized by a permit within the Downtown Activity Zone and warning signs as permitted by EC 9.6605 Reconciliation;

(8) Strings of lights not permanently mounted to a rigid background or otherwise qualified as seasonal decorations; and

(9) Signs in the public right-of-way not authorized by a governmental agency.