The 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.
These links represent the current version of Standard Highway Signs and the 2012 Supplement to the 2004 Standard Highway Signs. The 2012 Supplement contains the new and revised sign designs adopted in the 2009 Edition of the MUTCD. Where a sign design is included in the 2012 Supplement, its previous design in the 2004 Standard Highway Signs is superseded. Together, these two documents are a companion to the 2009 Edition of the MUTCD.
All user of this site MUST VERIFY ALL SPECIFICATIONS and that they are the latest versions. Traffic Lane Closures updates quarterly and has no control of agency changes and update schedule. This resource shall be used as a GUIDE ONLY. User must verify all data.