What do double yellow lines in the center of the road indicate?

Double yellow lines in the center of the road indicate that it is a no-passing zone. This road marking is put in place for safety reasons, as it typically represents areas where visibility is limited or where there may be an increased risk of accidents if drivers attempt to pass other vehicles. The purpose of this regulation is to maintain safe driving practices and to reduce the likelihood of collisions. When drivers see double yellow lines, they are legally obligated to not cross those lines for the purpose of overtaking another vehicle, ensuring more predictable and safer traffic flow.