All signs shall be maintained in a safe, neat, clean, and attractive condition.
A.
Signs shall be kept from excessive rust, corrosion, peeling paint, or other surface deterioration. The display surfaces, trims, frames, and supports of all signs shall be kept neatly painted or otherwise neatly maintained, as applicable.
B.
On-premises ground signs shall be directly supported by poles or supports in the ground. No external cross-braces, guy wires, "T-frames," "A-frames," "trusses," or similar bracing systems shall be used in constructing a ground sign or freestanding sign.
C.
Except for temporary signs, all signs shall be rigid and firmly attached to their supporting structure.