What lines separate traffic moving in opposite directions?

• A. White lines
• B. Center lines
• C. Broken white line
• D. Yellow lines

Answer: (D)

Yellow centerlines separate traffic moving in opposite directions. They mark the middle of the road so drivers stay on the correct side and approach opposing traffic with caution. The color yellow signals opposing flows, and the rule about passing depends on the line style: a broken yellow line on your side lets you pass when it’s safe, while a solid yellow line means no passing. White lines, in contrast, are used for lanes of traffic traveling in the same direction or for road edges, and a broken white line means you may change lanes with care.