What is the purpose of the Rumble Strip?

The purpose of the rumble strip is to alert drivers that they may be unintentionally drifting out of their lane. Rumble strips are physical features embedded in the road surface that create a vibration and sound when a vehicle drives over them. This tactile and audible feedback serves as an effective warning, helping to re-engage drivers' attention and prevent possible accidents that could result from veering into another lane or off the road.

The other options describe potential warning functions, but they do not specifically capture the primary role of rumble strips. For example, while drivers could be alerted to construction zones or hazards, rumble strips are specifically designed to address lane departure concerns, making option D the most accurate representation of their intended use.