Guidelines for Fuel Additive Waivers and Alcohol-gasoline Blend Waivers.

Tampering Enforcement Policy Memoranda - Reference Emission Control Equipment.

Notice and Request for Comment; Proposal for a New United Nations Global Technical Regulation on Automated Driving Systems (ADS).

Drivers' Use of Camera-based Rear Visibility Systems Versus Traditional Mirrors.

NHTSA Automated Vehicle Safety Public Meeting: March 2026.

NHTSA Safety Research Portfolio Public Meeting: Fall 2025 and Public Workshop on Automated Driving Systems.

Notice - Harmonization of Vehicle Regulations WP.29.

Public Hearing of Determination Mid-term Evaluation of GHG Years 2022-2025 LDV.

New Car Assessment Program.

CAFE Environmental Impact Statement Model Year 2022-2025.