What does a broken yellow line signify?

A broken yellow line indicates that passing is permitted, as long as it is safe to do so. This means that if you are in a lane adjacent to a broken yellow line and the way is clear, you are allowed to move into the other lane to pass another vehicle. The presence of the broken line serves as a visual cue to drivers that they can legally overtake slower vehicles when the conditions allow for it.

In a scenario where a solid yellow line is present instead, passing would not be allowed, indicating that the area is particularly dangerous or visibility is poor. The option regarding trucks overtaking is misleading in this context, as the broken yellow line applies to all vehicles regardless of type. Finally, the directive for all traffic to stop is also incorrect, as that would involve a different road signaling situation, such as a stop sign or red light, rather than passing regulations indicated by broken or solid lines.