Lane Ends Sign — Meaning

By DMV Master Editorial Team Updated April 28, 2026 Also: Lane Ends Merge Left, Lane Ends Merge Right

Category: Warning
Shape: Diamond
Colors: Yellow, Black
Text: (merging lane diagram)
MUTCD Code: W4-2

What does the Lane Ends Sign mean?

The Lane Ends sign is a yellow diamond showing two parallel lanes with one ending and merging into the other. It warns that one of the current lanes will end ahead and drivers in that lane must merge into the continuing lane.

What to do when you see this sign

1
If you are in the ending lane, merge into the continuing lane
2
Use turn signals well in advance
3
Match the speed of traffic in the continuing lane
4
Drivers in the continuing lane should make space — alternating ("zipper merge") works best

Where you'll see it

Approaching construction zones
After climbing lanes end
Where multilane roads narrow to single lanes
After bridges or tunnels with reduced lane counts

Test trap: don't get caught by this

The "zipper merge" — alternating one car from each lane — is the most efficient way to merge in heavy traffic. Many drivers feel guilty about waiting until the last moment, but it actually moves traffic faster than merging early.

Practice questions about the Lane Ends 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?

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What does a LANE ENDS sign indicate?

View answer & explanation

States that test this sign

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

Frequently asked questions

When should I merge if I am in an ending lane?

Begin signaling early but do not panic-merge immediately. In heavy traffic, the zipper merge (alternating from both lanes near the merge point) is most efficient.

Are drivers required to let merging traffic in?

Many states have laws requiring courteous merging. Refusing to make space when you can safely is generally a violation, though enforcement varies.

What is the difference between Merge and Lane Ends signs?

Merge warns of two lanes joining into one (typically a ramp joining a highway). Lane Ends warns that one of the current lanes will end ahead and traffic must combine.