Added lane
What does it mean?
Another roadway joins and becomes a separate additional lane. Drivers on the joining road do not have to merge immediately at this joining point, but ordinary lane-change rules still apply afterward.
What to do when you see it
- Follow the lane markings as the new lane begins.
- Stay alert for drivers who may change lanes after joining.
- Check mirrors, signal, and check your blind spot before any later lane change.
How to recognize it
- Yellow diamond with two upward arrows.
- The right arrow curves in but continues separately beside a dashed line.
On the road
A ramp enters the highway and its lane continues alongside yours. You hold your lane through the joining point and check for traffic before making any later lane change.
Don’t confuse it with
Merge Sign (Merging Traffic)
On Merge, the incoming path joins a single arrow; Added Lane retains two continuing arrows.
Lane ends
Lane Ends takes a lane away; Added Lane provides another continuing lane.
Put the meaning into practice
The related quiz includes this sign and other study questions. State practice can also cover local rules; it is not an official DMV exam.
Common U.S. sign recognition, reviewed October 3, 2026. Actual sign values, additional plaques and local rules can change how you should respond.