Which statement about solid white lines between lanes is true?

• A. To discourage lane changing
• B. To mark the edge of the road
• C. To designate bike lanes
• D. To indicate a crosswalk

Answer: (A)

Solid white lines between lanes tell you to stay in your current lane and not change lanes. They’re used to prevent risky weaving and keep traffic orderly, especially where visibility is limited or where merging could create conflicts. You only change lanes when you see a dashed line, or when an area clearly permits lane changes. The edge of the road is marked separately along the outer boundary, not with a line between lanes. Bike lanes are separated from traffic lanes by markings, but the primary purpose of the line between lanes isn’t to designate a bike lane. Crosswalks are marked across the road at intersections, not as a boundary between lanes. So the statement that solid white lines between lanes are there to discourage lane changing is the best fit.