What does a solid white line between lanes of traffic indicate?

A solid white line between lanes of traffic indicates that changing lanes is not permitted. This line is used to signal drivers that they should remain in their current lane, as crossing it could result in unsafe driving conditions or conflicts with other vehicles.

The presence of a solid white line typically signifies that the lanes serve a specific purpose or function, and maintaining the designated lane is essential for traffic flow and safety. Therefore, adhering to this marking helps to prevent accidents and ensures that all vehicles can navigate the roadway more peacefully.

While the other choices suggest actions that imply a level of permissiveness regarding lane changes, a solid white line clearly communicates the restriction against changing lanes, reinforcing the importance of following roadway markings for safe driving practices.