What do double solid yellow lines in the center of a two-lane road signify?

Double solid yellow lines in the center of a two-lane road indicate that no passing is permitted in either lane. This marking is designed to enhance safety by preventing drivers from attempting to overtake vehicles in areas where visibility may be limited or where it is otherwise unsafe to do so, such as on hills or curves.

The purpose of the double solid yellow lines is to clearly communicate to all drivers that crossing these lines to pass is against the law and could lead to dangerous situations. This understanding helps to maintain orderly traffic flow and minimize the risk of accidents. Recognizing these markings is essential for safe driving practices and adherence to traffic laws.