What does a white dotted line indicate?

A white dotted line on the roadway serves to indicate that the lanes are not protected and that passing is permitted. This marking is generally used on multi-lane roads to help guide drivers when it is safe to change lanes or overtake another vehicle. When drivers see a white dotted line, they can maneuver around slower vehicles, as long as the maneuver can be done safely and without interfering with the movement of other traffic.

In contrast, a solid white line would indicate that lane changes are discouraged or not allowed. The other options relate to different markings or signaling that are not applicable to the meaning of a white dotted line, demonstrating the important role lane markings play in maintaining safe and efficient traffic flow. Understanding these markings is essential for safe driving practices and adherence to road rules.