What does a solid yellow line indicate?

A solid yellow line indicates that passing is not allowed. This marking is placed on the left side of the lane to signify to drivers that overtaking another vehicle is prohibited. The primary purpose of the solid yellow line is safety; it helps to prevent head-on collisions by indicating that the visibility may be limited or that conditions ahead are not safe for passing.

This marking is different from other road markings, such as broken yellow lines, which do permit passing when it is safe to do so. Similarly, other options present different meanings that do not align with the significance of a solid yellow line. For instance, a bike lane would be indicated by specific bike lane markings, not a solid yellow line, and road work signs are separate and distinct from lane markings. Therefore, recognizing the meaning of a solid yellow line is crucial for safe driving practices.