A single solid white line means you may only cross to avoid a hazard.

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

Answer: (B)

Lane markings tell you when you can change lanes or pass. A single solid white line between lanes means you should stay in your lane and not pass another vehicle. Crossing that line is allowed only to avoid a hazard, not for regular passing. So the statement is correct: you may cross a single solid white line only to avoid a hazard. By contrast, a broken white line lets you pass if it’s safe, a double solid white line forbids crossing, and a center line is just the line that divides opposing directions on the road and can be solid or dashed depending on the situation.