All such signs, signboards, banners, and the like now in use shall at once be made to conform to the provisions of this chapter, upon orders from the City Engineer except as follows. Signs now in existence installed on permanent bases by permit between the sidewalk and curb may remain under the following rules and regulations:
(A) If the supporting post does not obstruct the view of the driver of a vehicle coming out of a street intersection, alley intersection, or private or public driveway.
(B) If the main part of the sign is at least eight feet from the ground surface to the bottom of the sign.
(`63 Code, § 1313.07) Penalty, see § 154.99