What does a double yellow line mean?

A double yellow line is a clear indication that passing is prohibited in both directions. This marking is used to enhance safety by preventing drivers from overtaking other vehicles where visibility may be limited or where it may be dangerous to do so. When you see double yellow lines, it means that there is a solid barrier between lanes of opposing traffic, emphasizing that staying in your lane is essential for safety.

In contrast, other options do not correctly represent the meaning of double yellow lines: one direction passing is not permissible with this marking, temporary road work zones are indicated by different signs or cones, and pedestrian crossings are marked in specific ways distinct from lane marking configurations like double yellow lines.