Driver's License Test Prep
Yellow diamond with two black arrows joining as one and pointing upward, with the merging arrow coming in from the lower left
MUTCD
W4-1L
Category
warning
Color
yellow
Shape
diamond
National · MUTCD Sign Reference

Merge Left

Traffic from the left merges into your lane ahead.

Warns that a roadway or lane on the left joins your direction of travel. Check your left mirror and blind spot, adjust speed, and be prepared to share the lane or make room for merging vehicles.

In the same family

Related signs

Yellow diamond with black border containing a thick black arrow that travels up and bends ninety degrees to point left.
Turn Left
Yellow diamond with black border containing a thick black arrow that travels up and bends ninety degrees to point right.
Turn Right
Yellow diamond with black border containing a thick black arrow that sweeps in a smooth curve from lower right up to the upper left.
Curve Left
Yellow diamond with black border containing a thick black arrow that sweeps in a smooth curve from lower left up to the upper right.
Curve Right
Yellow diamond with black border showing a black curving arrow sweeping up and to the left, with the numerals 35 below it.
Curve Left With Advisory Speed
Source

Wikimedia Commons: File:MUTCD W4-1L.svg (Public domain)

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