What does a solid yellow line indicate on the roadway?

A solid yellow line on the roadway serves as an important visual cue for drivers regarding passing regulations. It indicates that passing is not allowed in that area. This marker is typically used in situations where visibility is limited, such as on hills or curves, to ensure the safety of all road users by preventing overtaking. Understanding this rule helps drivers make safe decisions while navigating the roads, promoting a smoother flow of traffic and reducing the risk of accidents related to illegal passing maneuvers. The other options do not accurately reflect the function of a solid yellow line; for instance, it does not designate bike lanes or pedestrian crossings, nor does it permit passing.