What does a double solid white line mean?

A double solid white line indicates that lane changes are not allowed. This road marking is typically used to separate lanes of traffic that are moving in the same direction. The presence of the solid lines signifies that crossing or changing lanes is prohibited, ensuring the safety and predictability of traffic flow. This rule is especially important in areas where lane changes could create unsafe situations, such as near intersections, pedestrian crossings, or where the roadway is narrower. The solid nature of the lines emphasizes the importance of maintaining your position within your lane, significantly reducing the risk of collisions or accidents that can occur from sudden lane changes.