Sponsors (6)
The bill improves ADAS safety, repairability, and regulatory clarity through standardized tests, data access, and definitions, but transfers compliance costs and administrative burdens onto manufacturers, independent repair shops, and aftermarket businesses while introducing some regulatory complexity and limits on certain customizations.
Vehicle owners and independent repair shops gain standardized calibration and test protocols to verify ADAS operation after repairs or modifications, reducing the risk of unsafe ADAS behavior.
Manufacturers must provide tolerance and sensitivity data (within 30 days of vehicle release), giving owners and repair providers the technical information needed to maintain ADAS functionality.
Clear, standardized definitions (including statutory recognition of the independent aftermarket) and use of SAE J3016 create regulatory consistency so shops and owners know which systems and rules apply.
Independent repair shops and aftermarket modifiers will likely face new equipment, training, and certification costs to perform required calibrations and validation tests, raising repair prices and burdening small businesses.
Manufacturers could face civil penalties and compliance costs to meet new guidance, which may increase vehicle prices or delay new-model releases as companies adapt.
Smaller aftermarket businesses risk increased compliance burdens that could reduce competition for customization and modification services.
Based on analysis of 4 sections of legislative text.
Directs NHTSA to study feasibility (12 months) and publish technical guidelines (24 months) to keep ADAS functioning after vehicle modifications for 2028+ passenger vehicles.
Official title: To require the National Highway Traffic Safety Administration to establish guidelines for advanced driver assistance systems calibration, modifications, and tolerances, and for other purposes.
Introduced December 12, 2025 by Diana Harshbarger · Last progress December 12, 2025
Requires the Department of Transportation (through NHTSA) to study and then publish enforceable guidelines to keep advanced driver assistance systems (ADAS) and vehicle dynamic systems working correctly when passenger vehicles (model year 2028 and later) are modified or customized. The law sets deadlines: a 12‑month study/report to Congress on feasibility and costs, and publication of detailed technical guidelines within 24 months; noncompliant manufacturers may face civil penalties.