What does a solid yellow line indicate?

A solid yellow line indicates that passing is not allowed. This is an important safety measure used to control traffic flow and prevent accidents. The line serves as a clear visual indicator that crossing it to overtake another vehicle can be dangerous due to oncoming traffic. In situations where visibility is limited or there are curves in the road, the solid yellow line helps maintain safe driving practices by discouraging overtaking maneuvers that could lead to collisions. Understanding this rule is crucial for all drivers, as it promotes safety for both the driver and other road users.