R2 Series — Speed Limit Signs

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.