What does the double dashed line on the highway mean?

[RachelDella]

Double white dashed lines serve different purposes depending on their location. When painted at intersections, they function as yield lines, indicating that drivers should slow down and yield. When marked along road sections, they indicate reversible lanes where the direction of traffic may change over time. Lane dividing lines are white dashed lines used to separate traffic flows moving in the same direction, placed between lanes traveling the same way. Vehicles are permitted to cross these lines for lane changes when safe to do so. When there are two or more lanes in the same direction of travel, lane dividing lines must be marked. On highways, Class I roads, Class II roads (when consisting of two lanes), and urban expressways, the dimensions for lane dividing lines are 600cm lines with 900cm gaps, or 400cm lines with 600cm gaps. For other roads, the standard is 200cm lines with 400cm gaps.