The area of a sign shall be determined by the smallest rectangle that encompasses all of the letters or symbols which make up the sign together with any background of a different color or material than the general finish of the building, whether painted or applied.

In no case shall lighted signs be so located that they constitute a hazard to vehicular traffic.

The outlining by direct illumination of all or part of a building such as a gable, roof, wall, side or corner shall be prohibited.

Temporary or permanent signs resting on or attached to vehicles or other movable objects shall not be used as a means to circumvent the provisions of this chapter.