A double solid yellow line means traffic on both sides may not cross the center line to pass.

• A. Double solid white line
• B. Single broken yellow line
• C. Center line
• D. Double solid yellow line

Answer: (D)

Passing is controlled by how center lines are marked. A double solid yellow line tells you that traffic is moving in opposite directions and you may not cross the center line to pass anyone ahead in either direction. The reason this rule exists is safety: with two solid lines, visibility is often limited by curves, hills, or intersections, so crossing to pass would create a high risk of head-on collisions. When you see a single broken yellow line, passing is allowed when it’s safe, highlighting how a broken line communicates you may cross to pass if you can do so without endangering anyone. In short, a double solid yellow line means stay in your lane and don’t pass.