What is the minimum height requirement for short-term temporary signs?

The minimum height requirement for short-term temporary signs is crucial for ensuring visibility and safety in work zones. Signs placed too low may obstruct the view of drivers and could be easily overlooked, especially in areas where traffic may be frequent or at higher speeds. A one-foot height for these signs is appropriate in certain contexts, particularly in localized or low-speed environments where visibility concerns are managed.

Short-term temporary signs may include those used for road construction, detours, or other temporary conditions that require immediate attention from drivers. The one-foot height allows these signs to be adequately seen without being excessively obstructive to pedestrians or other road users.

In contrast, the other height options would generally increase the visibility of signs for high-speed areas or ensure better sight distances in more congested settings, making them likely more suitable for different applications rather than short-term temporary signage specifically.