What is the most common limitation imposed on signs?

The most common limitation imposed on signs is related to their size. This is primarily due to zoning regulations and local ordinances that aim to maintain aesthetic standards, ensure public safety, and prevent obstruction of views or distractions to drivers. Size restrictions help to control the visual impact of signage in different areas, ensuring that signs are appropriate for their environment. For instance, larger signs may not be suitable for residential areas, while smaller signs may be inadequate in commercial districts where more visibility is often required.

While other factors such as height, color, and location are also regulated in specific contexts, size tends to be a predominant concern across various jurisdictions due to its direct influence on visibility, readability, and overall visual harmony within the community.