What is the effect of a solid yellow line in the center of the road?

A solid yellow line in the center of the road signifies that passing is prohibited. This marking is used to indicate to drivers that it is unsafe to cross into the opposite lane to overtake another vehicle. The intent is to enhance safety by preventing overtaking in areas where visibility may be limited or in circumstances where the road conditions do not permit safe passing maneuvers.

The presence of a solid yellow line means that drivers must remain in their lane and cannot change lanes to pass another vehicle, emphasizing the importance of adhering to road markings for the safety of everyone on the road.