R14-4 National Network Route
Identifies a designated National Network trucking route.
- Sign Name
- National Network Route
- MUTCD Code
- R14-4
- Sign Category
- Regulatory Signs
Specifications
- Shape
- Square
- Color / legend
- Black truck symbol on white background with green circle
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. California Table 2B-1 governs application-size selection; example weights do not establish a legal load limit.
- Official drawing size30" × 30"
- Official drawing size36" × 36"
- Official drawing size42" × 42"
California Application & Variants
National Network route signing is optional; when the route is signed, use R14-4. Verify the actual route designation and applicable access provisions in CA MUTCD Chapter 2I.
When & Where It's Used
- Designated truck-route review
Placement Context
- Where it sits
- At the designated route, restriction or route-ending location appropriate to the sign..
- CA MUTCD reference
- CA MUTCD 2026 §2B.68
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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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