Which of the following is not considered a prohibited sign?

In the context of signage regulations, non-commercial flags displayed on flagpoles are generally not considered prohibited signs because they are often exempt from the same restrictions that apply to commercial signage. Many jurisdictions allow non-commercial flags to be displayed without the same concerns related to public safety, visual clutter, or consistency with community aesthetics that often apply to commercial signs and advertising.

While flashing signs, permanent streamers, balloons, and signs on utility poles may pose risks or interfere with traffic safety and aesthetics, non-commercial flags are typically seen as expressions of free speech and community representation. This can mean they are often permitted under signage regulations, reinforcing the idea that certain types of displays celebrate community values without the complications associated with commercial advertising.

This distinction highlights the balance between allowing personal expressions and managing public space effectively.