What does a single dashed white line separating traffic mean?
- Drivers may pass, even if it could be dangerous.
- Lanes move in opposite directions.
- Drivers may not pass.
- Drivers may pass if it is safe to do so. ✓
Answer: D. Drivers may pass if it is safe to do so.
A single dashed white line means drivers may pass if it is safe to do so.
Why this is the answer
The handbook says white lines separate lanes of traffic moving in the same direction, and a single broken line means you can pass other vehicles or change lanes if you can do it safely without interfering with traffic. The permission is conditional, so it does not mean passing is allowed regardless of danger.
Why the other answers are wrong
- A. Drivers may pass, even if it could be dangerous. — Passing is not allowed just because the line is dashed; the handbook limits it to cases where you can do it safely and without interfering with traffic.
- B. Lanes move in opposite directions. — White lines separate traffic moving in the same direction, while lines separating opposite-direction traffic are yellow.
- C. Drivers may not pass. — A single broken line permits passing or lane changes when safe, so it is not a no-passing marking.
Remember it
Think of a broken white line as permission with a condition: pass only when the lane is clear and your move will not interfere with traffic.