What does a solid yellow line signify?

A solid yellow line on the roadway indicates that no passing is allowed. This means that drivers are not permitted to cross over the line to pass another vehicle, as doing so could create a dangerous situation, especially in areas with limited visibility or oncoming traffic. The solid line serves as a visual cue to keep drivers on their side of the road for safety, particularly in situations where visibility is a concern, like curves or hills.

The presence of a solid yellow line typically emphasizes the importance of maintaining lane discipline and encourages drivers to remain cautious, avoiding any maneuvers that could compromise their safety or the safety of others on the road. This traffic control measure is essential for preventing accidents in areas where passing is deemed unsafe.