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Seven post-crash electric vehicles arranged outside an IIHS test facility after moderate overlap front crash testing, including Tesla Model 3, Ford F-150 Lightning, Chevrolet Blazer EV, Tesla Cybertruck, Volkswagen ID.Buzz, Nissan Ariya, and BMW i4Insurance Institute for Highway Safety (IIHS)
PolicyFMVSS 305a Explained: The Next Era of EV Battery Safety

FMVSS No. 305a, effective February 2025, rewrites the federal framework for EV battery safety — covering thermal runaway venting, crash isolation, and the new 49 CFR Part 561 emergency documentation requirement. Here's what each provision does and what it means for the conversion community.

Jun 18, 2026 · 7 min readRead →

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