On May 4, 2022, the Federal Motor Carrier Safety Administration (FMCSA) issued an Advance Notice of Supplemental Proposed Rulemaking (ANSPRM) on speed limiters.  The notice requested public comment on questions related to the programming, adjustment, and maintenance of settings to engine control units as well as feedback on the applicability of the speed limiting rulemaking under consideration. Comments on this original notice were due on June 3 and it can be found here:     https://www.govinfo.gov/content/pkg/FR-2022-05-04/pdf/2022-09443.pdf. 

Today, FMCSA issued a notice extending the comment period for this ANSPRM to July 18, 2022.  The extension can be found here:  2022-11490.pdf (govinfo.gov).