What does the presence of two solid yellow lines signify?

The presence of two solid yellow lines in the roadway is a clear indication that crossing or passing is prohibited. This marking is designed to enhance safety by discouraging drivers from attempting to overtake other vehicles in areas where visibility is limited or where it would be dangerous to do so. The solid lines serve as a warning that the road conditions do not permit safe passage, often because of curves, hills, or high traffic volumes. Consequently, adhering to this traffic marking is crucial for the safety of all road users. Other options, such as merging without restrictions or allowing vehicles to pass, do not reflect the intent of the two solid yellow lines and could lead to unsafe driving practices.