What do double solid lines indicate?

Double solid lines indicate that no crossing or passing is allowed. This road marking serves as a clear regulatory signal to drivers that they should not attempt to overtake another vehicle or change lanes across these lines. The presence of double solid lines typically indicates a zone where it is deemed unsafe for such maneuvers, often due to factors like limited visibility or a high volume of traffic. It is important for drivers to heed this indication to maintain safety for all road users, as crossing these lines can lead to dangerous situations.

In contrast, the other options suggest actions or scenarios that contradict the purpose of the double solid lines, such as overtaking or switching lanes, which are prohibited in areas marked by this signage.