A double solid yellow line prohibits traffic from both directions from crossing the centerline to pass.

• A. It prohibits crossing for only one direction.
• B. Prohibits traffic from crossing the centerline to pass in both directions.
• C. Indicates a passing zone for all traffic.
• D. Means you may pass when safe.

Answer: (B)

Double solid yellow lines mean no passing for traffic in either direction. They mark a no-passing zone on a two-way road, so you must not cross the centerline to pass another vehicle, regardless of how fast you’re going or how slow the vehicle ahead is. Stay in your lane and wait for a passing zone with dashed lines or for a safe opportunity to turn left into a driveway or onto a cross street when allowed. This is different from dashed lines, which allow passing when safe, and from a single solid line, which typically restricts crossing for the purpose of passing in the direction of the solid line. The essence is that crossing the centerline to pass is prohibited in both directions with a double solid yellow line.