What do double yellow lines with one solid and one broken line mean?

The presence of double yellow lines, where one line is solid and the other is broken, conveys specific rules regarding overtaking and crossing these lines. When the solid yellow line is closer to your lane, it indicates that crossing is prohibited for vehicles traveling in that direction. This is meant to ensure safety in areas where visibility may be limited or where passing is deemed unsafe. On the other hand, if the broken line is adjacent to your lane, it permits crossing, allowing for safe overtaking of slower vehicles, as long as it's safe to do so.

Therefore, if you are driving and find the solid line closest to you, it is a clear indication not to cross, whereas if the broken line is nearer, the circumstances may allow you the opportunity to pass when it is safe to do so. This regulation is crucial for maintaining safety on the roads, particularly in areas with heavy traffic or limited visibility.