Bipartisan ADAS bill in United States, could transform vehicle modification and safety standards

In a landmark move that could reshape how modern vehicles are repaired and modified across the United States, lawmakers in the U.S. House of Representatives have introduced the ADAS Functionality & Integrity Act — legislation aimed at ensuring advanced driver assistance systems remain safe and effective even after common vehicle modifications.

Advanced driver assistance systems (ADAS) — technological features like automatic emergency braking, adaptive cruise control, and lane-keeping assistance — are now standard on a growing number of new vehicles. While these systems greatly improve safety, they also introduce complexities when a vehicle undergoes aftermarket modifications such as installing bike racks, lift kits, larger wheels, or custom bumpers. Without proper information and calibration, even small changes can misalign sensors and cameras, potentially undermining the effectiveness of safety systems. 

What the bill proposes

The ADAS Functionality & Integrity Act (H.B. 6688), introduced with bipartisan support, directs the National Highway Traffic Safety Administration (NHTSA) to develop clear guidelines and standards for how ADAS should be calibrated after vehicles are modified. Under the bill, NHTSA would be required to establish:

• Modification ranges and tolerances for vehicles with ADAS components to help ensure calibration remains within safe parameters after alterations.
• Test procedures and protocols aftermarket businesses can use to verify that ADAS systems are properly aligned and functioning correctly.

These measures would apply initially to new vehicles starting with model year 2028, laying the groundwork for safer customization practices as ADAS becomes ubiquitous. 

Why it matters now

The timing of this legislation is crucial. Federal regulators are moving toward requiring certain safety technologies — including automatic emergency braking — on all new passenger vehicles beginning with model year 2029. While this mandate will significantly enhance vehicle safety, it also highlights the urgent need for a framework that ensures these systems remain reliable once the vehicle is out of the showroom and into real-world service and aftermarket environments. 

Until now, the aftermarket industry has lacked uniform standards and access to the detailed calibration data needed to guarantee ADAS performance after repairs or modifications. That gap has left repair shops and customization experts to navigate complex systems without official guidance, raising safety concerns and complicating compliance. 

Industry reaction

Trade associations like the Specialty Equipment Market Association (SEMA) have thrown their weight behind the bill, applauding the bipartisan effort and stressing the need for consistency and transparency. SEMA and its legislative partners argue that clear ADAS calibration standards are essential not only for safety but also for preserving vehicle owners’ rights to personalize and maintain their vehicles without jeopardizing the performance of critical safety tech. 

Representatives sponsoring the bill — including Rep. Diana Harshbarger (R-TN), Rep. Gabe Vasquez (D-NM), Rep. Jay Obernolte (R-CA), and Rep. Norma Torres (D-CA) — have emphasized the importance of striking the right balance between innovation, safety, and consumer choice. Their collaboration reflects widespread recognition that as vehicles grow ever more technologically sophisticated, regulatory frameworks must evolve alongside them. 

What’s next

The bill now heads through committee and floor consideration in the House, where advocates hope it will gain broader traction. If enacted, it would be one of the most significant legislative steps in recent years to provide uniform ADAS calibration standards and solidify the role of aftermarket service providers in the era of advanced vehicle safety systems.

For automotive shops, customizers, and drivers alike, this legislation represents a potential turning point — one that promises safer roads, more reliable technology, and clearer guidelines for an industry in transition.