Hei Siblings Petition NHTSA to Reconsider Seat Belt Warning Delay
Summary
Vianey Hei and Elry Hei filed a formal Petition for Reconsideration under 49 C.F.R. § 553.35 challenging NHTSA's April 6, 2026 interim final rule that further delayed implementation of rear-seat seat belt warning systems under FMVSS No. 208. Petitioners argue the delay was unjustified given NHTSA's own safety findings of approximately 50 lives saved and over 500 injuries prevented annually once the requirement is fully implemented. The petition requests NHTSA withdraw the delay or reopen the rulemaking with specific justification for which makes and models require additional time and what quantified cost basis supports the extension beyond NHTSA's own $19.59-per-vehicle estimate.
“Petitioners challenge the agency's decision to further delay implementation of that safety requirement on a record NHTSA itself described as materially uncertain and not fully quantifiable.”
Vehicle manufacturers subject to FMVSS No. 208 should monitor NHTSA's response to this petition, particularly any agency action to reopen or clarify the justification for the compliance-date extension. Petitioners have specifically questioned whether Docket No. NHTSA-2024-0071-0008 materials were properly placed in the public docket—a procedural issue that could be raised in any subsequent challenge to the rule.
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What changed
Petitioners Vianey Hei and Elry Hei submitted a petition challenging NHTSA's decision to further delay implementation of rear-seat seat belt warning systems under FMVSS No. 208 (91 Fed. Reg. 17144). The petition argues the delay is unjustified on a record NHTSA itself described as materially uncertain, particularly given the safety benefits the agency identified—approximately 50 lives saved and 500+ injuries prevented annually. Petitioners request NHTSA reconsider and withdraw the additional delay or reopen the issue with fuller explanation of which makes and models require more time, what engineering changes are needed, and why a broad market-wide delay is justified. Petitioners also request NHTSA stay the compliance-date extension pending resolution and issue a written decision. Automakers and vehicle safety advocates should monitor NHTSA's response, as the outcome could affect the timeline and scope of the rear-seat belt warning requirement.
Archived snapshot
Apr 22, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Comment
This submission is both a public comment on Docket No. NHTSA-2026-0727 and a formal Petition for Reconsideration under 49 C.F.R. § 553.35 of NHTSA's April 6, 2026 interim final rule amending FMVSS No. 208 (91 Fed. Reg. 17144). The full petition is provided as an attached PDF.
Petitioners Vianey Hei and Elry Hei do not challenge NHTSA's authority to require rear-seat seat belt warning systems. Petitioners challenge the agency's decision to further delay implementation of that safety requirement on a record NHTSA itself described as materially uncertain and not fully quantifiable. 91 Fed. Reg. 17152-53.
Petitioners request that NHTSA reconsider and withdraw the additional delay, or at minimum reopen the issue and provide a fuller explanation identifying with greater specificity: which makes and models actually require additional time; what engineering changes are actually required; what quantified cost basis supports the extension despite NHTSA's own $19.59-per-vehicle estimate (90 Fed. Reg. 393); why a broad market-wide delay is justified despite the agency's safety findings (approximately 50 lives saved and more than 500 injuries prevented annually once fully implemented); and whether any materials considered by the agency were not placed in the public docket, including the role of Docket No. NHTSA-2024-0071-0008.
Petitioners further request that NHTSA stay or suspend the additional compliance-date extension pending resolution of this petition, and issue a written decision.
See attached PDF for the full petition and argument.
Submitted April 17, 2026.
Vianey Hei and Elry Hei
308 S. Blount St., Apt. 2016, Raleigh, NC 27601
avy03010@gmail.com / run.legalpilot@gmail.com
Attachments 1
NHTSAPetitionforReconsiderationHei - Google Docs 2
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