What does a double solid white line mean?

A double solid white line indicates that lane changes are not permitted. This road marking is used to separate traffic lanes moving in the same direction and signifies that crossing these lines is prohibited. This restriction helps maintain the safety and flow of traffic by preventing drivers from making lane changes where it may not be safe, such as in areas with limited visibility or heavy traffic. Understanding this rule is essential for safe driving practices, as it helps ensure that all road users adhere to the designated traffic patterns.