Final answer:
Yellow center lines on the road separate traffic going in opposite directions. Broken yellow lines allow passing when it is safe, while solid double yellow lines prohibit passing in both directions.
Step-by-step explanation:
The yellow center lines on the road separate traffic going in opposite directions.
Yellow center lines are an important part of road markings that help to maintain traffic flow and prevent accidents. They act as a visual guide to indicate where vehicles should position themselves on the road. Broken yellow lines separate traffic going in opposite directions, allowing passing when it is safe to do so. Solid double yellow lines, on the other hand, prohibit passing in both directions, indicating a no-passing zone.