What can a solid white lane marking indicate?

Answer: A — Must stay in lane

A solid white lane marking indicates that a driver must stay in their lane. This type of marking serves as a guideline for vehicle positioning on the roadway, reinforcing that lane changes in that area are discouraged and may not be safe. The presence of a solid white line indicates that deviating from the lane can lead to unsafe conditions, especially in areas like intersections, freeway transitions, or when approaching a pedestrian crossing. In contrast, a dashed white line would indicate that lane changes are permissible, which is not the case with a solid white line. Understanding this road marking is crucial for maintaining proper lane discipline and for the safety of all drivers on the road.