What is indicated by double yellow lines?

Double yellow lines indicate that you should not cross if the line on your side is solid. This road marking is typically used to separate traffic moving in opposite directions and serves as a warning to drivers about safety regulations regarding passing. If the line closest to you is solid, it prohibits any lane changes or passing maneuvers. Conversely, if the line is broken, it may allow passing, but only if it is safe to do so. Understanding this rule is vital for maintaining safe driving practices and ensuring that you follow the traffic laws designed to prevent accidents.