Oh, looks like I got that wrong. Rear bars are required, but the US standards are well lower than the Canadian ones and periodic inspection isn't required. ht

Oh, looks like I got that wrong. Rear bars are required, but the US standards are well lower than the Canadian ones and periodic inspection isn't required. https://www.trucknews.com/features/are-standards-for-trailer-underride-guards-strong-enough/ https://www.trucknews.com/features/are-standards-for-trailer... https://www.iihs.org/news/detail/iihs-recognizes-semitrailers-with-good-underride-guards https://www.iihs.org/news/detail/iihs-recognizes-semitrailer...