What does a broken yellow line signify on the roadway?

A broken yellow line on the roadway indicates that passing is allowed when it is safe to do so. This means that drivers may change lanes and overtake vehicles if they are able to do so without interfering with other traffic. It serves as a warning that there are conditions under which passing is permissible, but drivers must exercise caution and make sure the road is clear before proceeding.

In contrast, the other options suggest restrictions that do not apply to a broken yellow line. For example, a solid yellow line indicates no passing is allowed, while lanes merging or one-way traffic are typically indicated by other road markings or signage, not a broken yellow line. Understanding this distinction can help drivers make safer decisions on the road.