SPEED LIMIT Sign Requirements

1. When a SPEED LIMIT Sign Is Used

Posts the maximum legal speed for the roadway, establishing the enforceable speed limit drivers must not exceed.

• Posting reduced work-zone speed limits
• Established under the proper speed-setting authority
• Used with work-zone warning signing

2. How and Where It Applies

Posts the maximum legal speed for the roadway, establishing the enforceable speed limit drivers must not exceed. In the field, R2-1 Speed Limit is typically positioned at the point of regulation within the activity area. Common deployments include posting reduced work-zone speed limits; established under the proper speed-setting authority; used with work-zone warning signing. Always confirm its size, retroreflective sheeting, spacing, and placement against the CA MUTCD 2026 and the reviewing agency before finalizing the traffic control plan.

3. Placement and Application Notes

At the point where the regulation applies, per CA MUTCD Part 2B.

• Place the sign where drivers have a clear, unobstructed view on approach.
• Mount at the standard height and setback from the edge of the traveled way.
• Do not mount with other signs on the same post unless space constraints require it.

4. Standard Sizes and Visibility Considerations

Typical minimum: 24" × 30".

• Choose size based on roadway speed, sight distance, and mounting location.
• Maintain high retroreflectivity for maximum night and adverse-weather visibility.

5. California Notes

Used in California where a reduced work-zone speed limit is established through the proper authority, posted to set the temporary limit through the area.

6. Common Field or Planning Mistakes

• Temporary regulatory control not warranted or conflicts with existing control.
• Reduced speed limit posted without proper speed-setting authorization.
• Wrong-way protection (DO NOT ENTER / WRONG WAY) missing at closed approaches.
• Sign size not appropriate for the facility.