What does the LOW CLEARANCE sign indicate regarding height?

The LOW CLEARANCE sign is specifically designed to inform drivers about the maximum height that vehicles can be in order to safely pass underneath an overpass or structure. The height indicated by such a sign is crucial for preventing vehicles that exceed this height from becoming stuck or causing damage.

In this case, the correct answer indicates a clearance of 12 feet 6 inches. This measurement aligns with typical specifications for low clearance warnings, which are established for roadway safety. When drivers see a LOW CLEARANCE sign stating 12 feet 6 inches, they understand that any vehicle taller than this measurement should seek an alternate route to avoid potential accidents or damage.

Additionally, while other options represent different heights that could theoretically appear on various signage, they do not reflect the standard clearance height of 12 feet 6 inches commonly used in these types of warnings. Understanding this standard helps drivers make informed decisions about their routes, preventing accidents and ensuring overall roadway safety.