What does a solid white line indicate?

A solid white line is used to indicate that lane changes are discouraged, meaning drivers should remain in their current lane. This type of line often appears on roads where staying in the lane is important for safety reasons, such as in high-density traffic areas or near intersections. The solid line serves as a visual cue to drivers that they should not change lanes, promoting safer driving behavior and reducing the risk of accidents.

In contrast, dashed lines typically indicate that lane changes are permitted. The presence of a solid line suggests a need for caution and emphasizes the importance of remaining in the designated lane.