Documents Under Revision

NMRA Standards, RPs, TNs, TIs Under Revision

The NMRA, in its standards and recommended practices, addresses only the specific standards and recommended practices for model railroads.  These standards and recommended practices do not address any legal requirements.  It is the responsibility of the manufacturer to determine if their product conforms to all applicable governmental laws and regulations.

 This page under re-construction.

Documents released by the NMRA for review and comment 

Documents released for review and comment

Document Posted Comments End
S-9 Electrical 13-Sep-24 11-Oct-24
RP-9 Electrical 14-May-24 12-Jul-24
S-9.3.2 BiDirectional Communication 03-Jan-21 Not Set
S-9.2.1.1 Advanced Extended Packet Format 23-Jun-24 Not Set
S-9.2.2 Configruation Variables 08-Jun-24 Not Set
S-9.4.1 SUSI proposed Standard 09-Jun-24 Not Set

Documents released for voting to approve by the DCC Working Group

Document Posted Voting Ends
S-9.2.1 DCC Extended Packet Format 08-Aug-24 08-Sep-24

Documents approved and Released for  NMRA Membership review and comment.

Document Posted Comments End
There are currently no documents for comment.    

Documents to submit for Board of Directors Approval

Document Submitted Approved
     

Previous document revisions were submitted to the Board of Directors and approved are now on the Standards page.

If you need additional information or wish to make further inquires regarding NMRA DCC, please contact the NMRA Standards & Conformance Department at tech-chair [at] nmra.org, CIManager [at] nmra.org or dcc-manager [at] nmra.org

National Model Railroad Association, Inc.
Department #635
P.O. Box 1328, Soddy Daisy TN 37384-1328
Phone: (423) 892-2846 - Fax: (423) 899-4869

Updated 13-Sep-2024