Sponsors (10)
Introduced February 4, 2026 by Stephen Cohen · Last progress February 4, 2026
The bill substantially strengthens underride protections and data-driven oversight to reduce deaths and severe injuries, but does so at the expense of meaningful upfront costs, implementation burdens, and the risk of delayed benefits while studies and regulatory changes roll out.
Drivers, passengers, pedestrians, cyclists, and other vulnerable road users will see fewer fatal and catastrophic underride crashes because the bill requires performance-based side and rear underride protections (including intrusion prevention up to 40 mph), clearer standards, and related research and rulemaking.
Vehicle manufacturers, fleet owners, and regulators gain clearer statutory definitions and a predictable rulemaking schedule (final rule within 18 months, full compliance within 2 years, reviews at least every 5 years), reducing long-term regulatory uncertainty.
Researchers, policymakers, and communities get improved data, centralized research, and targeted crash statistics (quarterly updates and compiled crash data) that support better design improvements, enforcement, and investment where underride crashes are most common.
Manufacturers, truck owners, and fleet operators will face higher upfront compliance and retrofit costs to meet new underride guard requirements, costs that are likely to be borne in whole or part by small carriers and ultimately passed to consumers through higher freight prices.
Carriers, suppliers, and DOT could face significant operational and administrative burdens — including redesigning products and production lines, supply-chain strain, installation disruptions, and added staff time — during a concentrated compliance window.
Safety improvements could be delayed for years because the bill emphasizes studies, reports, and phased rulemaking (and the advisory committee has a statutory end date), meaning victims may wait for implementation while research and recommendations are completed.
Based on analysis of 9 sections of legislative text.
Directs NHTSA to require side underride guards on new trailers/semitrailers/single‑unit trucks, set performance standards, expand committee duties, and mandate studies, reporting, and training.
Requires the Department of Transportation (NHTSA) to issue a final rule within 18 months requiring new trailers, semitrailers, and single-unit trucks to be equipped with side underride guards that meet a specified performance standard (limit occupant intrusion at closing speeds up to 40 mph, block side passage of Vulnerable Road Users, and be aerodynamically integrated). The bill also updates statutory definitions, reconvenes and expands an underride advisory committee, creates a public underride research repository, directs two independent studies (National Academies and the GAO/Comptroller General), and requires NHTSA to improve fatality counting and provide on-demand law-enforcement training on underride crash identification and documentation.