How is a construction zone typically indicated?

A construction zone is typically indicated with an orange sign. The use of orange in traffic signage is universally recognized as a warning to drivers about conditions that may involve road work or construction activities ahead. This color is chosen because it stands out and alerts drivers to proceed with caution due to potential hazards, such as workers, equipment, or changed roadway conditions.

In contrast, yellow signs are generally used to indicate caution for non-construction-related hazards, red signs are often used for stop or emergency situations, and blue signs provide information related to services and directions. Thus, the use of orange specific to construction zones is crucial for informing drivers and ensuring safety in areas where road work is taking place.