What does a solid yellow line indicate?

A solid yellow line indicates that passing is not allowed in that area. This marking is used to enhance safety by preventing drivers from attempting to overtake another vehicle in situations where visibility is limited or where the road conditions may be dangerous. The solid yellow line serves as a clear visual cue for drivers, reinforcing the need to stay in their lane and not cross into oncoming traffic. This is particularly important in areas where there might be curves, hills, or other factors that could impede visibility and increase the risk of head-on collisions. In contrast, a broken yellow line would indicate that passing is permitted when it's safe to do so, while the options regarding road construction and the end of a no-passing zone pertain to other specific road markings and are not represented by a solid yellow line.