What does a construction zone sign typically alert drivers about?

A construction zone sign primarily serves to inform drivers about possible changes in lanes and the need to reduce speed. When approaching a construction area, it is crucial for drivers to be aware that there may be altered traffic patterns, such as lane shifts or closures, to accommodate work being done. These signs are designed to encourage a cautious approach, prompting motorists to slow down and remain vigilant for workers and equipment that might be present on or near the roadway.

The option indicating normal driving conditions does not apply, as construction zones are anything but normal. Increased speed limits also do not align with the purpose of construction zone signs since they typically require drivers to reduce speed for safety reasons. Lastly, guaranteed right of way is misleading, as drivers are often required to yield to construction workers and flaggers, which can vary from the usual traffic rules. Thus, the correct answer accurately reflects the essential safety measures that drivers must adhere to when approaching construction zones.