Merge Sign — Meaning

By DMV Master Editorial Team Updated April 28, 2026 Also: MERGE

Category: Warning
Shape: Diamond
Colors: Yellow, Black
Text: (merging arrows)
MUTCD Code: W4-1

What does the Merge Sign mean?

The Merge sign is a yellow diamond showing two arrows joining into one. It warns drivers that another lane will join the current roadway ahead. Both lanes must adjust speed and position to merge smoothly.

What to do when you see this sign

1
Watch for merging traffic from the indicated side
2
Adjust your speed and position to allow safe merging
3
Use turn signals if you change lanes to give space
4
Do not stop in a merge area unless absolutely necessary

Where you'll see it

At highway on-ramps where ramp traffic joins main lanes
Where two roads converge into one
After lane closures or construction zones
At the end of climbing lanes

Test trap: don't get caught by this

Merging is a SHARED responsibility between drivers in both lanes. Many drivers think they have absolute right of way; in fact, the merging driver should match speed and find a gap, while highway drivers should make space when possible.

Practice questions about the Merge Sign

Test your knowledge with real DMV-style questions, each with the correct answer and explanation.

What does a LANE ENDS sign indicate?

View answer & explanation

What does a LANE ENDS sign indicate?

View answer & explanation

What does a LANE ENDS sign indicate?

View answer & explanation

What does a FLASHING ARROW PANEL in a work zone indicate?

View answer & explanation

Which of these signs directs you to a hospital?

View answer & explanation

This sign warns you

View answer & explanation

States that test this sign

The Merge Sign appears in DMV practice tests for 50 states. Click any state to see its full DMV practice page.

Frequently asked questions

Who has the right of way when merging onto a highway?

The vehicles already on the highway technically have the right of way. However, both drivers should adjust speed to merge safely — highway drivers should yield space when possible.

Should I match highway speed before merging?

Yes. Use the on-ramp to accelerate to highway speed before merging, so you can blend smoothly into traffic.

What if the highway is congested and there is no gap?

Slow down on the ramp if necessary, but try to match traffic speed and merge into the smallest safe gap. Do not stop on the ramp unless necessary — that creates a chain reaction of stops.