What does a solid double yellow line indicate?

A solid double yellow line is used as a roadway marking to indicate that passing is prohibited in both directions. This means that vehicles must remain in their lanes and cannot cross the double lines to overtake other vehicles. The solid nature of the lines signifies a strong restriction on passing in order to enhance safety, particularly in areas where visibility might be limited or where it is unsafe to do so. The intention behind this regulation is to prevent accidents that could occur from vehicles attempting to pass when it is not allowed. Understanding the significance of road markings, including solid double yellow lines, is crucial for maintaining safety on the roads.