What does a solid double white line indicate?

What does a solid double white line indicate?

• A. They mark the edge of the road.
• B. You may cross them to pass if safe.
• C. They indicate the lane boundary and crossing is discouraged.
• D. Do not cross them - same as solid double yellow lines.

Answer: (D)

Solid double white lines act as a barrier between lanes traveling in the same direction, and you should not cross them. They’re used where you need to stay in your lane for safety, so passing or changing lanes across these lines is not allowed. This is similar in intent to solid double yellow lines, which prohibit crossing to pass opposing traffic. The line indicates “stay in your lane” rather than use the other side of the road to pass.

Solid double white lines act as a barrier between lanes traveling in the same direction, and you should not cross them. They’re used where you need to stay in your lane for safety, so passing or changing lanes across these lines is not allowed. This is similar in intent to solid double yellow lines, which prohibit crossing to pass opposing traffic. The line indicates “stay in your lane” rather than use the other side of the road to pass.