What do double solid white lines indicate?

Double solid white lines indicate that lane changes are not allowed. This road marking is used to separate lanes of traffic moving in the same direction, and the presence of two solid lines reinforces that vehicles should not cross these lines under any circumstances. The intent is to prevent lane changes where it may be unsafe or where traffic patterns require strict adherence to lane discipline. This helps maintain order on the road and enhances safety for all drivers.

The use of double solid white lines signifies that drivers must stay in their designated lanes and cannot switch to another lane, ensuring that traffic flows smoothly and reduces the risk of collisions.