R2 Series — Speed Limit Signs
Regulatory Signs · CA MUTCD Part 2, Chapter 2B
The R2 Series covers speed limit regulatory signs (R2-1) used to set the legally enforceable maximum speed on a roadway or within a zone. In California work zones, a reduced speed limit — such as 25 MPH in an active work zone — must be authorized by the agency with jurisdiction before it can be posted. Fines for speeding in California work zones are doubled when workers are present, increasing the significance of proper R2-1 sign placement and authorization.
California Field Use Notes
The speed limit on the R2-1 sign must match the speed that has been formally authorized by the agency. Showing an unauthorized speed reduction is a plan-review rejection. Temporary speed zones typically require an agency-issued special order or permit condition. When the reduced speed zone ends, it must be terminated with a new R2-1 showing the normal speed or an END REDUCED SPEED ZONE sign.
Showing 2 of 2 signs
Posts the maximum legal speed for the roadway, establishing the enforceable speed limit drivers must not exceed.
The R2-12 End Work Zone Speed Limit sign is a California MUTCD regulatory sign. It is shown here as an educational reference with the official FHWA Standard Highway Signs layout and California sizing guidance.
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.
Need R2 Series signs for a California project?
Public Ready can help you source, rent, or purchase R2 Series signs and integrate them into a compliant traffic control plan. For work zone compliance support, visit WorkZoneCompliance.com.