What is the purpose of solid white lines on the road?

Solid white lines on the road serve an important purpose in traffic management and road safety. They indicate that changing lanes is discouraged or prohibited. More specifically, these lines separate lanes of traffic that flow in the same direction and reinforce that drivers should not change lanes at that point.

When you see solid white lines, it is a signal to maintain your current lane, which helps to ensure safer movement of vehicles. This is especially crucial in areas where lane changes could create hazards, such as near intersections or in heavy traffic. The use of solid white lines is part of broader traffic regulations designed to prevent accidents and maintain orderly flow on the roads.