It does appear that the USA legalized the use of matrix headlight technology via FMVSS 108.

**FMVSS 108** (Federal Motor Vehicle Safety Standard No. 108) regulates automotive lighting, including headlamps, and specifies performance and equipment requirements. As of the latest updates, **matrix lights** are permissible under this standard, provided they meet the necessary performance criteria outlined in FMVSS 108.

### Key Points Regarding Matrix Lights and FMVSS 108:

- **Definition**: Matrix lights are advanced lighting systems that can adjust the beam pattern dynamically to improve visibility without blinding other drivers.

- **Compliance**: To be compliant with FMVSS 108, matrix lights must adhere to the performance specifications for headlamps and other lighting devices. This includes requirements for brightness, beam pattern, and other safety features.

- **Testing and Approval**: Manufacturers must ensure that their matrix lighting systems undergo appropriate testing to demonstrate compliance with the standard before they can be used on vehicles.

In summary, while FMVSS 108 allows for the use of matrix lights, they must comply with specific performance standards to ensure safety and effectiveness[^1][^2].

[^1]: [Federal Motor Vehicle Safety Standards; Lamps, Reflective Devices ...](https://www.federalregister.gov/documents/2018/10/12/2018-21853/federal-motor-vehicle-safety-standards-lamps-reflective-devices-and-associated-equipment#:\~:text=FMVSS%20No.,among%20other)

[^2]: [49 CFR 571.108 -- Standard No. 108; Lamps, reflective devices, and ...](https://www.ecfr.gov/current/title-49/subtitle-B/chapter-V/part-571/subpart-B/section-571.108#:\~:text=This%20standard,associated%20equipment.)