What does a dashed white line in the center of the road indicate?

A dashed white line in the center of the road signifies that lanes are designated for vehicles to pass or change lanes. This type of line allows for the movement of traffic in the same direction, permitting drivers to safely shift into adjacent lanes when necessary, provided it is safe to do so. The presence of the dashed line indicates that there are no restrictions on changing lanes in that area, contrasting with solid lines that typically signal prohibitions against lane changes or passing. Understanding this road marking is crucial for ensuring a smooth flow of traffic and maintaining safety on the road.