What is the purpose of white lines on the road?

White lines on the road serve the important function of separating lanes of traffic moving in the same direction. This clear demarcation helps drivers understand where they should position their vehicles within their lane, promoting safe driving practices and reducing the likelihood of collisions. The use of white lines enhances overall traffic order and makes it easier for drivers to anticipate the movements of other vehicles.

For example, on highways or multi-lane roads, solid or dashed white lines indicate whether lane changes are permitted, thus enabling drivers to navigate more effectively. It is essential for drivers to recognize these lines and adhere to the rules they convey in order to maintain safe and efficient traffic flow.