What does a solid yellow line mean on the road?

A solid yellow line on the road indicates that no passing is allowed. This means that vehicles traveling in either direction should not cross the solid yellow line to overtake another vehicle. The presence of the line signifies a potentially hazardous situation, such as approaching a curve or intersection, where visibility may be limited.

While other options might suggest different scenarios—like passing being allowed or lane changes being permitted—a solid yellow line is specifically designed to communicate to drivers that they should remain in their designated lane and not attempt to pass. This rule plays an essential role in maintaining road safety and preventing accidents. The understanding of these markings is crucial for all drivers to ensure a safer driving environment.