Lanes of traffic going in opposite directions are divided by:

• A. A solid yellow line
• B. A dashed white line
• C. Hydroplaning
• D. A yellow lane divider

Answer: (A)

When two-way traffic moves in opposite directions, a centerline marks the boundary between them. A solid yellow centerline means you must not pass or cross it in your lane because you’re dealing with oncoming vehicles. You’re allowed to cross only for left turns into an opening on the other road, and only when it’s safe and legal. This marking helps prevent head‑on collisions by clearly separating opposing streams of traffic. By contrast, other markings have different purposes: dashed lines indicate you may pass when safe, white lines separate lanes moving in the same direction, and hydroplaning is a wet‑road hazard, not a road marking. The term “yellow lane divider” isn’t a standard roadway marking.