SW4-1(CA) WATCH DOWNHILL SPEED Requirements
Application notes for SW4-1(CA) WATCH DOWNHILL SPEED. The official manual distinguishes mandatory standards, recommended guidance, and optional applications; consult the linked sources for the provisions that apply.
California Application & Variants
Caltrans lists SW4-1(CA) as WATCH DOWNHILL SPEED. The sign face is shown without drafting annotations; Layout opens the complete official specification.
1. When WATCH DOWNHILL SPEED Is Used
The Caltrans SW4-1(CA) specification covers WATCH DOWNHILL SPEED. Its official drawing provides the sign legend, layout, and design notes.
- WATCH DOWNHILL SPEED
- California sign design and layout review
2. Placement and Application Notes
Position SW4-1(CA) consult the applicable CA MUTCD provisions and the reviewing agency for placement..
- Place the sign where the intended road users have a clear, unobstructed view on approach.
- Use the mounting height and lateral placement specified for the sign and installation type.
- Use sign assemblies and supplemental plaques only as provided in the applicable manual and approved design.
3. Layout Sizes and Visibility Considerations
Linked-layout dimensions: See dimensions in the official specification. Check the applicable MUTCD and agency requirements for the required installation size.
- Choose size based on roadway speed, sight distance, and mounting location.
- Use the visibility and material requirements specified for this sign and installation.
4. Sign Selection Checks
- Match SW4-1(CA) and its displayed legend to the intended condition.
- Check the source drawing for the required directional or message variant.
Related Resources
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Verify SW4-1(CA) Requirements
This is an educational reference. Verify sign use, size, placement, and application against the current CA MUTCD, Caltrans sign specifications, Standard Plans, and the reviewing agency. Official source links are gathered in one place.
View official sourcesEducational 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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