Lane Ends, Merge Left: Redesigning the W4-2 Road Sign to End

The W4-2, also known as the Lane Reduction Transition Sign, is one of the most ubiquitous road signs in the United States — historically, it has also been on of the most confusing. This “Lane Ends” sign often appears in places where a passing lane is eliminated along a rural highway or an entrance lane merges

Signing & Pavement Markings — Colorado Department of Transportation

Traffic Signs, W4-2R-O Lane Ends Left Merge Sign

Tricky Business: Appearing on Blue Highway Exit Signs is Harder than it Looks - 99% Invisible

Shared Space' Design: Road Signs Suck. What if We Got Rid of Them All? - 99% Invisible

Part 6: Temporary Traffic Control - State of California

Lane Ends, Merge Right: 10 (More!) Redesign Ideas for the W4-2

Standard Drawings, PDF, Geotechnical Engineering

Lane Ends, Merge Left: Redesigning the W4-2 Road Sign to End, One

Temporary Traffic Control Zone Layouts Field Manual 2011

Lane Ends, Merge Left: Redesigning the W4-2 Road Sign to End