R5-6 · No Bicycles
R5-6 Sizes & Dimensions
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. All dimensions below are in inches.
Open R5-6 Official Dimension Drawing (PDF, opens in a new tab)Official PDF · Opens in a new tab
Dimensions from the Official Drawing
Dimensions checked against the exact official dimensioned drawing and matching size-specific clean artwork. California R5-6 roadway minimums must be checked in Table 2B-1; do not infer an 18-inch minimum.
- Official drawing size18" × 18"
Select using the applicable California MUTCD and agency requirements.
Drawing dimensions do not establish a permitted roadway minimum. California Table 2B-1 does not list the 18-inch drawing size as its roadway minimum.
- Official drawing size24" × 24"
Select using the applicable California MUTCD and agency requirements.
Drawing dimensions do not establish a permitted roadway minimum.
- Official drawing size30" × 30"
Select using the applicable California MUTCD and agency requirements.
Drawing dimensions do not establish a permitted roadway minimum.
- Official drawing size36" × 36"
Select using the applicable California MUTCD and agency requirements.
Drawing dimensions do not establish a permitted roadway minimum.
- Official drawing size48" × 48"
Select using the applicable California MUTCD and agency requirements.
Drawing dimensions do not establish a permitted roadway minimum.
Drawing dimensions are not a universal minimum or an agency approval. 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.
California Application & Variants
Place so bicyclists can identify the restricted facility and use an available alternative route. Check the California size table; the FHWA 18-inch drawing does not establish a California roadway minimum.
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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