If you are driving on a highway next to a single broken white line marking:
- You cannot cross the line to pass.
- You may cross the line to pass and change lanes. ✓
- You may only cross the line to change lanes if you are in the left lane.
Answer: B. You may cross the line to pass and change lanes.
You may cross a single broken white line to pass other vehicles and to change lanes when it is safe and does not interfere with traffic.
Why this is the answer
The handbook describes white lines as separating lanes that move in the same direction. For a single broken white line, it says you can pass other vehicles or change lanes if you can do so safely without interfering with traffic. That matches the choice allowing both passing and lane changes. The line is not a barrier, and the permission is tied to safety and traffic interference, not to which lane you are in.
Why the other answers are wrong
- A. You cannot cross the line to pass. — A single broken white line does not forbid passing; the manual says you can pass when it is safe and you do not interfere with traffic.
- C. You may only cross the line to change lanes if you are in the left lane. — The broken line rule does not depend on being in the left lane; it allows passing or changing lanes when safe.
Remember it
Broken white, same-direction traffic: cross for a pass or a lane change only when the move is safe.