- MUTCD
- 3B.04
- Position
- lane
- Color
- white
- Pattern
- double solid
- Type
- linear
Double Solid White Lane Line
Two solid white lines forbid lane changes; drivers must remain in their current lane.
Two parallel solid white lines separate lanes of traffic traveling in the same direction where lane changes are prohibited. They are common at toll plazas, the edges of HOV or managed lanes, and through long no-change zones. Crossing a double white line is not permitted; wait until the marking changes to a broken or single line before merging.
Related markings
Questions about this marking
- Two solid white lines separate lanes traveling in the same direction. What are you required to do? →
- Double solid white lines on a freeway most often mark: →
- You approach a lane divider on a Texas roadway that consists of two solid white lines side by side. What does the manual say about this marking? →
- Two parallel solid white lines separate lanes traveling in the same direction. What do they require of a driver in one of those lanes? →