What does a solid double yellow line on the roadway indicate?

A solid double yellow line on the roadway indicates that passing is not allowed in either direction. This marking serves as a clear visual signal to drivers that they must remain in their lane and cannot cross the line to overtake another vehicle, regardless of the traffic situation. The purpose of this restriction is to enhance safety on the road by preventing maneuvers that could lead to head-on collisions or other accidents, especially in areas where visibility is limited or where there are potential hazards.

The presence of such lines is often found in locations such as winding roads, intersections, or near schools, emphasizing the importance of lane discipline and caution. Understanding this road marking helps drivers make safe decisions and adhere to traffic laws effectively.