R9-20 Bicycles Allowed Use of Full Lane
Informs road users that bicyclists are allowed to use the full travel lane.
- Sign Name
- Bicycles Allowed Use of Full Lane
- MUTCD Code
- R9-20
- Sign Category
- Regulatory Signs
Specifications
- Shape
- Square
- Color / legend
- Black legend and border on white background
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.
Dimensions checked against the exact official drawing. Select by the applicable roadway or bicycle-facility requirements; displayed hours, fees, and other variable legends are examples.
- Official drawing size30" × 30"
California Application & Variants
May be used where there is no bike lane or usable adjacent shoulder and the travel lane is too narrow for safe side-by-side travel. Use the current ALLOWED USE OF FULL LANE legend, not the superseded R4-11 identity.
When & Where It's Used
- Pedestrian and bicycle route review
Placement Context
- Where it sits
- At the location and facing the approach identified by the linked manual; match any directional arrow to the actual assembly..
- CA MUTCD reference
- CA MUTCD 2026 §9B.14
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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. Reference editions: California MUTCD 2026 (effective January 18, 2026) and the Federal MUTCD 11th Edition with Revision 1.
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