The continuous white center line (unbroken line) painted on the highway means what?

The continuous white center line (unbroken line) painted on the highway indicates that passing is prohibited. This type of marking serves as a clear visual cue for drivers that overtaking other vehicles in that section of the road is not allowed, typically due to safety considerations. It helps maintain traffic flow and reduces the risk of collisions, especially in areas where visibility is limited or the road conditions are potentially hazardous.

In contrast, the other options refer to different situations and road markings. However, since the unbroken line specifically denotes that passing is not permissible, it is crucial for drivers to abide by this rule for their safety and the safety of others on the road.