W1-10b CURVE WITH SIDE ROAD (ALTERNATE) Requirements

1. When CURVE WITH SIDE ROAD (ALTERNATE) Is Used

Warns of an alternate side-road arrangement on a curve.

• Roadway geometry and approach-warning review

2. Placement and Application Notes

Position W1-10b 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 W1-10b and its orientation to the actual roadway condition.
• Use the official W1-10b configuration only where it approximates the actual intersection and alignment. It is distinct from W1-10 and W1-10c. 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.