What does a solid white line between lanes indicate?

A solid white line between lanes indicates that you should not change lanes. This marking is used to show that changing lanes is discouraged due to the potential for conflict with vehicles in adjacent lanes. It serves as a visual cue to drivers that staying in their current lane is the safest option. This is particularly relevant in situations where lane changes could lead to increased risks, such as areas with high traffic volume or near intersections.

Generally, lane markings are designed to enhance road safety and traffic flow; therefore, it is essential to obey them. A solid white line signifies that remaining in your lane is advisable, unlike other markings that might allow for a lane change when it is safe to do so.