How are solid yellow lines used on roadways?

Answer: D — May mark left edge of pavement on divided highways

Solid yellow lines are primarily used to indicate that passing is not permitted on the left side. Their function as a demarcation for the center of two-way roads is essential for maintaining safety and clarity in driving. On divided highways, solid yellow lines may serve to mark the left edge of the pavement. This helps drivers understand their lane positioning, especially in areas where the road may be separated by concrete barriers or another type of physical division. Understanding the role of solid yellow lines is crucial. While they indicate that passing is not allowed, they also serve to enhance roadway organization and assist in preventing accidents by clearly marking areas where vehicles should not cross. Knowing how these lines function can significantly improve road safety for all users.