ADAS Functionality and Integrity Act
Sponsored By: Representative Harshbarger
In Committee
Summary
Keep ADAS working after vehicle modifications. This bill would require the Department of Transportation, through NHTSA, to publish guidelines within 24 months so advanced driver assistance systems and vehicle dynamic systems maintain functionality when passenger vehicles are modified or customized.
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- Owners and modifiers would get quantifiable tolerance thresholds, calibration procedures, and confirmatory test protocols to verify ADAS operation after repairs or changes. Manufacturers must provide vehicle tolerance and system sensitivity information to owners and the Administrator within 30 days of a new model's release.
- Manufacturers would need to publish allowable modification ranges, system sensitivity data, and proper post-repair calibration steps across vehicle platforms. Violations of the guidelines could lead to civil penalties under 49 U.S.C. § 30165(a).
- The Administrator may contract with independent laboratories and testing facilities to develop empirical test methods. The bill requires a 12-month study on feasibility, capability, and costs to support ADAS functionality for model years after 2028 and mandates stakeholder outreach and a U.S. NCAP-style scoring scale for calibration validation.
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Bill Overview
Analyzed Economic Effects
1 provisions identified: 1 benefits, 0 costs, 0 mixed.
New ADAS rules for owners and shops
This bill would require DOT to publish ADAS guidelines within 24 months. They would apply to passenger vehicles model year 2028 and later. Manufacturers would have to give owners and the agency tolerance and system sensitivity information within 30 days after a new model is released. The rules would set measurable limits for ride height, wheels, geometry, and sensor or camera displacement, and would require calibration steps and confirmatory tests that owners and repair shops can use. The Administrator would be allowed to contract with independent labs to do testing. If a manufacturer did not follow the guidelines, it would be subject to civil penalties under 49 U.S.C. § 30165(a).
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Sponsors & CoSponsors
Sponsor
Harshbarger
TN • R
Cosponsors
Obernolte
CA • R
Sponsored 12/12/2025
Vasquez
NM • D
Sponsored 12/12/2025
Torres (CA)
CA • D
Sponsored 12/12/2025
Mackenzie
PA • R
Sponsored 3/27/2026
Roll Call Votes
No roll call votes available for this bill.
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