What do double solid yellow lines indicate about passing?

Double solid yellow lines indicate that passing is not permitted in either direction. This road marking is used to clearly signal that the lane division prohibits overtaking and passing of vehicles, ensuring the safety of drivers. The presence of these lines often marks areas such as no-passing zones, which are typically found in locations where visibility is limited or where there may be other hazards, such as curves or hills. By adhering to this rule, drivers contribute to safe driving conditions and help prevent accidents that could occur from trying to pass in areas where it is unsafe to do so.