What does a solid yellow line mean on the road?

A solid yellow line on the road indicates that passing is not allowed. This marking is used to maintain safety by providing a visual cue that the area ahead may have limitations that could pose risks if a vehicle were to change lanes or pass another vehicle. Such situations often occur in areas where visibility is limited, such as curves, hills, or near intersections, making it critical for drivers to stay in their lanes and avoid passing. This helps prevent accidents and ensures smoother traffic flow by discouraging maneuvers that could be hazardous. Understanding this marking can contribute significantly to road safety, making it essential for drivers to adhere to these regulations.