What do double white lines signify?

Double white lines are used to indicate that crossing the lines is prohibited under any circumstances. This marking is seen frequently in areas where safety is a high priority, such as at intersections or in situations where the consequences of crossing the line could be particularly dangerous, like near schools or busy roadways. The intent behind this distinction is to enhance traffic flow and safety by discouraging maneuvers that could result in accidents.

The other options represent different roadway markings and rules: for instance, passing zones are typically marked with dashed or broken lines, which indicate where overtaking another vehicle is permitted. Lane separation often relies on lines that vary in color or style, and temporary construction zones are usually marked with specific signage and typically employ other forms of line marking beyond just double whites.