What does a construction sign typically indicate?

A construction sign typically indicates that there is a crew at work in the area, which alerts drivers to expect potential hazards or changes in the road. These signs serve as a crucial warning to increase awareness around construction zones, where workers may be present, and where road conditions might be altered due to ongoing construction activities.

While other options may seem relevant in certain contexts, they do not capture the primary intent of a construction sign. For example, a sign indicating "road closed" is more specific and usually pertains to signs that denote that vehicles cannot proceed further. Similarly, signs indicating "speed limit adjustment" are intended to modify the speed limit for safety but do not inherently announce the presence of work crews. Each of these other signs has its own purpose, but a construction sign fundamentally serves to notify drivers of the presence of workers and the associated dangers that come with construction activities.