W6-4 Narrow Two-Way Traffic
The W6-4 Narrow Two-Way Traffic sign warns that the roadway ahead narrows to a two-way, two-lane operation with opposing traffic on the other side of the center line. The two opposing arrows indicate traffic moving in both directions past the sign. In temporary traffic control it is shown on an orange background, commonly where a lane closure or crossover sets up a narrow two-way section.
- Sign Name
- Narrow Two-Way Traffic
- MUTCD Code
- W6-4
- Sign Category
- Warning Signs
Specifications
- Shape
- Rectangle (Vertical)
- Color / legend
- Orange background, black legend (temporary traffic control use)
Sizes & Dimensions (inches)
These are dimensions shown on the linked layout. Select the required size using the applicable MUTCD and agency requirements; the smallest drawing size is not necessarily the permitted minimum.
- Layout size12" × 18"
Placement Context
- Where it sits
- On the approach to a narrow section that carries two-way traffic (for example a two-lane, two-way operation set up around the work area).
- CA MUTCD reference
- CA MUTCD 2026 Chapter 2C — Warning Signs and Object Markers
Related Signs
Browse Warning Signs
Educational reference only. This is not an official Caltrans, FHWA, or local agency publication and is not legal or engineering advice. Always verify sign selection, size, placement, spacing, and application against the current CA MUTCD 2026, Caltrans sign specifications, Standard Plans, project documents, and the reviewing agency’s requirements. Local jurisdictions may impose additional requirements, and final selection, placement, and dimensions may require engineering judgment or agency approval. Reference editions: California MUTCD 2026 (effective January 18, 2026) and the Federal MUTCD 11th Edition with Revision 1.
Need to Rent or Purchase This Sign? Contact Public Ready.
Public Ready supports sign selection, project-ready sign packages, and equipment sourcing through qualified providers — with expert support built for compliance.