What is the main color for signs in highway work zones?

The main color for signs in highway work zones is orange. This color is specifically chosen because it is highly visible and alerts drivers to potential hazards or changes in the roadway environment due to construction or maintenance activities. Orange signs are used to convey warnings and are part of a standardized color coding system that helps ensure consistency and recognition among drivers. The use of orange aids in drawing immediate attention and communicating critical information about work zone safety, which is essential for protecting both the workers present and the traveling public.