What does a dashed white line between lanes indicate?

• A. You may change lanes where it is safe.
• B. You must not change lanes.
• C. You must stay in your lane.
• D. It marks the edge of the road.

Answer: (A)

A dashed white line between lanes means lane changes are allowed when it’s safe to do so. When you want to move to the adjacent lane, you can cross that line, but only after signaling, checking mirrors and blind spots, and ensuring there’s enough space without squeezing or forcing other drivers. This differs from solid lines, which indicate you must not cross to change lanes in that area, and from road edge markings that show the boundary of the roadway. So you act on the line’s cue by changing lanes only when you have a clear, safe gap.