2009 Edition with Revision Numbers 1 and 2 incorporated, dated May 2012The most current version of the MUTCD is the 2009 Edition with Revision Numbers 1 and 2 incorporated, dated May 2012. The official version of the 2009 MUTCD with Revision Numbers 1 and 2 incorporated is the PDF version.
Temporary Traffic Control 2012 Edition State of California Business, Transportation and Housing Agency Department of Transportation
California Manual on Uniform Traffic Control Devices
FHWA’s MUTCD 2009 Edition as amended for use in California