Final answer:
A double solid yellow line in the center of a highway indicates that passing or changing lanes is prohibited in both directions, and drivers should not cross the line to overtake or pass other vehicles.
Step-by-step explanation:
A double solid yellow line in the center of a highway indicates that passing or changing lanes is prohibited in both directions. This means that drivers should not cross the double solid yellow line to overtake or pass other vehicles. The line is intended to separate traffic traveling in opposite directions and ensure safety on the road.
For example, if you encounter a double solid yellow line, you must not attempt to pass or overtake another vehicle by crossing the line. Instead, you should wait for a dashed line or a passing zone where it is safe and legal to change lanes.
It is important to always follow road markings and signs to ensure safe driving and avoid any potential accidents or violations.