R6-1R One Way (Right)
Indicates that traffic on the roadway flows in one direction only, to the right, as shown by the horizontal arrow.
- Sign Name
- One Way (Right)
- General Meaning
- Indicates that traffic on the roadway flows in one direction only, to the right, as shown by the horizontal arrow.
- MUTCD Code
- R6-1R
- Official designation
- One Way — FHWA SHS 2024, App. B2-209
- Typical Use
- Advance warning area, ahead of the work.
- Sign Category
- Regulatory Signs
Specifications
- Standard Shape
- Rectangle (Horizontal)
- Background Color
- Black
- Legend / Symbol
- White legend
- Border
- White
- Reflectivity
- High Intensity (for nighttime visibility)
- Compliance
- MUTCD / CA MUTCD
Standard Sizes (inches)
- Conventional Rectangle (Horizontal)24"–48" tall
- Expressway Rectangle (Horizontal)36"–60" tall
- Freeway Rectangle (Horizontal)48"–72" tall
Material / Application Notes
Defining temporary one-way streets or segments. Confirm placement and supplemental plaques against the applicable CA MUTCD standard.
View this sign on the Federal MUTCD (FHWA)California Notes
California-specific application notes and adoptions may differ. Review California requirements where applicable.
What It Means / When This Sign Is Used
In the field, R6-1R One Way (Right) is typically positioned at the advance warning area, ahead of the work. Common deployments include defining temporary one-way streets or segments; confirming direction at detour and closure points; used with DO NOT ENTER and WRONG WAY. Always confirm its size, retroreflective sheeting, spacing, and placement against the CA MUTCD 2026 and the reviewing agency before finalizing the traffic control plan.
Learn more about One Way (Right) sign requirementsWhen & Where It's Used
- Defining temporary one-way streets or segments
- Confirming direction at detour and closure points
- Used with DO NOT ENTER and WRONG WAY
Placement on a Traffic Control Plan
- Where it sits
- Advance warning area, ahead of the work.
- CA MUTCD reference
- CA MUTCD Part 2B (Regulatory Signs)
- Typical minimum size
- 36" × 12"
California / Field Use Notes
Used in California work zones to define temporary one-way operation and confirm the permitted direction of travel through the setup.
In Los Angeles, temporary regulatory changes (speed, one-way, turn or entry restrictions) generally involve LADOT review, and on state highways Caltrans District 7. Regulatory authority cannot be created by signing alone — confirm the change is authorized by the agency with jurisdiction over the roadway.
Common Plan Review Comments
- Temporary regulatory control not warranted or conflicts with existing control.
- Reduced speed limit posted without proper speed-setting authorization.
- Wrong-way protection (DO NOT ENTER / WRONG WAY) missing at closed approaches.
- Sign size not appropriate for the facility.
Confirm one-way arrows agree with the intended flow and detour direction. Public Ready reviews one-way operation signing.
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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. Written against California MUTCD 2026 (effective January 18, 2026) and the Federal MUTCD 11th Edition. Official sources last verified June 2026.
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