What does a solid white line mean on the road?

Answer: B — Do not cross or change lanes

A solid white line on the road signifies that drivers should not cross or change lanes. This type of line is used to indicate that it’s important to maintain the current lane due to safety concerns or specific traffic regulations. For instance, solid white lines are commonly found in areas where lane changes could be potentially hazardous, such as near intersections, pedestrian crossings, or in situations with heavy traffic. While the other options might suggest flexibility in driving behavior, only a solid white line conveys a clear message that lane changes are prohibited. This helps ensure a safer driving environment by discouraging maneuvers that could lead to accidents or conflicts with other vehicles. Understanding this road marking is crucial for complying with traffic rules and ensuring the safety of yourself and others on the road.