All signs not specifically permitted are prohibited. Prohibited signs include but are not limited to:
A. Off-premises signs, including billboards.
D. Portable signs or movable signs of any type.
E. Neon signs, except when used as an accessory sign.
F. Signs with flashing, blinking, intermittent, or moving lights, or any artificial light which does not maintain stationary and constant intensity and color at all times, except those signs that have an electronic message that display a message for a minimum of 15 seconds; and except signs displaying time and/or temperature shall be permitted to display a message for a minimum of four seconds.
G. Mounted or portable search lighting used to project moving or stationary overhead light beams.
H. Signs that contain or consist of ribbons, balloons, streamers, spinners or similar moving, fluttering or revolving devices.
I. Signs that contain or consist of banners or pennants, unless such sign is a temporary sign.
K. Signs which may obstruct the view of any official traffic sign or signal, the sight distance triangle at any street intersection, or the public right-of-way.
M. Sandwich board type signs.