Which of the following is NOT a function of pavement markings?

The correct answer highlights that providing decorative elements is not a function of pavement markings. Pavement markings generally serve practical purposes that enhance roadway safety and efficiency. They are critical for directing the flow of traffic, indicating speed limits, and separating lanes of traffic. These markings are essential for guiding drivers, ensuring that they remain in their designated lanes, and reducing the likelihood of accidents. Decorative elements, while they may enhance the aesthetic appeal of a highway, do not contribute to the safety or operational functionality of the roadway and are therefore not considered a primary function of pavement markings.