Driver's License Test Prep
Orange diamond with two black upward arrows; the left arrow curves in from the lower left to run parallel to a straight arrow on the right, with a dashed lane line between them.
MUTCD
CW4-3L
Category
work zone
Color
orange
Shape
diamond
National · MUTCD Sign Reference

Added Lane From Left (Work Zone)

A lane from the left joins the roadway in the work area; no merge is required of through traffic.

An additional lane enters from the left through the construction area, giving the roadway one more through lane. Traffic already on the road does not need to merge; both streams continue forward in their own lanes once the new lane has joined. Stay in your lane and watch for entering vehicles establishing position.

In the same family

Related signs

Vertical red-and-orange panel. Red top half with white text NO STANDING ANYTIME and a white double-headed horizontal arrow. Bottom orange band with black hard-hat icon and TEMPORARY CONSTRUCTION REGULATION. Code SP-383B.
No Standing Anytime: Temporary Construction Regulation
Vertical red-and-orange panel. Red top half with white text NO STANDING ANYTIME and a white horizontal arrow pointing left. Bottom orange band with hard-hat icon and TEMPORARY CONSTRUCTION REGULATION text.
No Standing Anytime: Construction (Arrow Left)
Vertical red-and-orange panel. Red top half with white text NO STANDING ANYTIME and a white horizontal arrow pointing right. Bottom orange band with hard-hat icon and TEMPORARY CONSTRUCTION REGULATION text.
No Standing Anytime: Construction (Arrow Right)
Orange diamond with black border reading CHECK POINT AHEAD on three lines in black uppercase letters.
Check Point Ahead
Orange diamond with black border reading SOBRIETY CHECK POINT AHEAD on three lines in black uppercase letters.
Sobriety Check Point Ahead
Source

Wikimedia Commons: File:MUTCD CW4-3L.svg (Public domain)

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