What does a solid yellow line on the road mean?

A solid yellow line on the road indicates that no passing is allowed. It serves as a road marking designed to enhance safety by preventing drivers from overtaking other vehicles in areas where visibility may be limited or where it is deemed unsafe to pass. This marking is often used in situations such as curves, intersections, or as a boundary between opposing traffic flows to mitigate the risk of head-on collisions.

While other options address different traffic situations, they do not apply to the meaning of a solid yellow line. Passing is only permitted in areas marked by broken yellow lines, and road construction signs or stop indications would be communicated through different symbols or markings on the road. Thus, understanding the purpose and meaning of the solid yellow line reinforces safe driving practices and adherence to traffic regulations.