W1-10e REVERSE CURVE WITH CROSSROAD Requirements
Application notes for W1-10e REVERSE CURVE WITH CROSSROAD. The official manual distinguishes mandatory standards, recommended guidance, and optional applications; consult the linked sources for the provisions that apply.
California Application & Variants
Match the reverse-curve direction and crossroad position. Combination signs should show no more than one crossroad or two side-road symbols. The displayed official face is the left-oriented example; select the orientation that matches the site.
1. When REVERSE CURVE WITH CROSSROAD Is Used
Warns of a crossroad within a reverse-curve alignment.
- Roadway geometry and approach-warning review
2. Placement and Application Notes
Position W1-10e in advance of the condition, with placement determined from the approach speed, sight distance, and applicable California manual provisions..
- 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: 36" × 36"; 48" × 48". 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 W1-10e and its orientation to the actual roadway condition.
- Match the reverse-curve direction and crossroad position. Combination signs should show no more than one crossroad or two side-road symbols. The displayed official face is the left-oriented example; select the orientation that matches the site.
- Select size and installation using the applicable California table and responsible agency requirements.
Related Resources
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Verify W1-10e 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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