What is indicated by white edged lines?

White edged lines are designed to define the boundaries of the road. These lines are typically found along the sides of the roadway, providing drivers with a visual cue to stay within their designated lane. The presence of white edged lines helps demarcate the edges of the road, ensuring that vehicles remain on the paved surface and helping to maintain safety by preventing vehicles from veering off. Understanding the function of these lines is essential for all drivers, as it aids in adhering to road regulations and promotes orderly traffic flow.

The other options do not accurately represent the primary function of white edged lines. For instance, separating lanes for different vehicles pertains more to lane markings like broken or solid lines within a lane. Similarly, while no parking zones are often indicated by specific signage rather than lines, directing traffic into one lane typically involves different types of markings or signs specific to traffic control during lane closures or diversions.