Added lane sign
A yellow diamond with a line joining alongside another, both carrying on. It warns that traffic from another road enters in its own new lane.
Easily confused with
How to read it
The MUTCD uses it ahead of a point where two roads come together and no merging is needed. As Pennsylvania's manual puts it, the entering traffic uses a new lane added to the road.
Rules vary by state and country. This explains the sign's standard meaning in the U.S. Manual on Uniform Traffic Control Devices; it isn't legal advice.
Added lane or merge
Where the lanes do come together into one, the Merge sign is used instead.
Read next
- Next in Road signsDivided highway signA yellow diamond showing a road split around a median. It warns that the highway ahead becomes divided, with traffic in each direction separated.
- The same shape in Army ranksFirst sergeant (E-8)Three chevrons above three arcs with a diamond between them are the insignia of a first sergeant (1SG), pay grade E-8 in the US Army and the senior NCO of a company.
More road signs
The same shape elsewhere
Browse symbols drawn with curves and waves, diamonds or lines.
Sources
- MUTCD 2009 Edition, Chapter 2C: Warning Signs and Object Markers, MUTCD 2009, Part 2, U.S. Federal Highway Administration, Section 2C.41
- Pennsylvania Driver's Manual, Chapter 2: Signals, Signs and Pavement Markings, Pennsylvania Department of Transportation, p. 14
Researched, edited and approved by Rory Hansen before publishing. Last reviewed September 25, 2026. How we research
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