The Federal Motor Carrier Safety Administration (FMCSA) extended the comment period for its August 22, 2019 notice of proposed rulemaking (NPRM) to amend its hours-of-service (HOS) rules. FMCSA received requests for an extension to the comment period from the American Trucking Associations, the Commercial Vehicle Safety Alliance, and the International Brotherhood of Teamsters. The Agency believes it is appropriate to extend the comment period to provide interested parties additional time to submit their responses to the NPRM. Therefore, the Agency extends the deadline for the submission of comments until October 21, 2019. The comment period for the NPRM published August 22, 2019 at 84 FR 44190, is extended to October 21, 2019.