On multilane roads, a broken white line is used to

• A. To divide opposing directions
• B. To divide each side of the highway into separate lanes for vehicles traveling in the same direction.
• C. To show the boundary between opposing traffic
• D. To signal a merge area

Answer: (B)

On multilane roads, road markings guide how you move from one lane to another and where you can pass. A broken white line between lanes moving in the same direction means you may change lanes if it’s safe to do so. This marks the boundaries of the lanes for traffic traveling in the same direction and helps traffic flow smoothly, whether you’re passing a slower vehicle or preparing to exit a lane. It’s not describing traffic in opposite directions—that uses different centerline markings—and while you may merge when traffic allows, the main purpose of a broken white line is to indicate lane boundaries for vehicles going the same way.