What does a "Road Work Ahead" sign tell drivers?

A "Road Work Ahead" sign is designed to alert drivers that they may encounter construction or maintenance work along the road ahead. This sign serves as a warning to reduce speed and exercise caution, as conditions may change suddenly due to the presence of workers, equipment, or altered roadways. By indicating that there may be construction ahead, it helps keep both drivers and workers safe by encouraging safe driving practices in potentially hazardous situations.

In this context, the other choices do not accurately reflect the meaning of the sign. An accident is not implied by this sign, nor does it indicate that the road is entirely closed for repairs. Additionally, stating that all lanes are clear ahead contradicts the purpose of the sign, as it is meant to forewarn of possible obstructions or changes in the roadway caused by road work rather than suggest a clear path.