This document denies a petition for rulemaking from Jerry and Marianne Karth, Eric Hein, and Lois Durso-Hawkins, requesting that the National Highway Traffic Safety Administration (NHTSA) amend Federal Motor Vehicle Safety Standards (FMVSS) No. 223, «Rear impact guards,» and FMVSS No. 224, «Rear impact protection,» to include additional requirements. The agency is denying the petition because it does not provide new or different information that would warrant initiation of a rulemaking at this time. This document also discusses NHTSA’s consideration of a similar petition from the same petitioners submitted to the docket of the July 15, 2022 final rule amending FMVSS Nos. 223 and 224. 89 Federal Register (FR) 57381, Title 49 Code of Federal Regulations (CFR) Part 571 : https://www.govinfo.gov/content/pkg/FR-2024-07-15/html/2024-13956.htm https://www.govinfo.gov/content/pkg/FR-2024-07-15/pdf/2024-13956.pdf This denial of petitions for rulemaking and the final rule notified as G/TBT/N/USA/1055/Add.1 are identified by Docket Number NHTSA-2022-0053. The Docket Folder is available on Regulations.gov at https://www.regulations.gov/docket/NHTSA-2022-0053/document and provides access to primary and supporting documents as well as comments received. Documents are also accessible from Regulations.gov by searching the Docket Number.