A solid white line on the road means?

A solid white line on the road indicates that lane changing is not permitted. This is primarily for safety reasons, as the solid line is used to separate lanes of traffic that move in the same direction. If a driver crosses this line, they risk endangering not only themselves but also other road users, as it could disrupt the flow of traffic and result in accidents. Therefore, adhering to this rule is critical for maintaining safety on the roads and ensuring a smooth driving experience for all. In some contexts, such as identifying areas like pedestrian crosswalks or certain restricted zones, a solid white line reinforces the idea that drivers should not change lanes or proceed as they would under less restrictive markings.