What is the purpose of a "Road construction" sign?

The purpose of a "Road construction" sign is to warn drivers about upcoming hazards related to construction activities. These signs are critical for ensuring the safety of both drivers and construction workers by providing advance notice that roadwork is taking place. This allows drivers to adjust their speed, be vigilant for sudden changes in the road conditions, and navigate safely around any obstacles or altered traffic patterns.

This warning is especially important as construction zones can present various dangers, such as equipment, workers in the road, and changed traffic patterns. Being aware of these hazards ahead of time can help prevent accidents and maintain the flow of traffic. Other options provided do not encompass the specific intent of construction signs, which is primarily to alert drivers to the presence of hazards rather than to manage traffic flow, indicate speed limits, or advise detours.