Notice and Request for Comments; Child Passenger Safety Practices, Ridesharing and Autonomous Vehicles.

Parts and Accessories Necessary for Safe Operation; Certification and Labeling Requirements for Rear Impact Protection Guards.

Notice; Crash Preventability Determination Program - Response to Public Comments.

Automated Vehicle Transparency and Engagement for Safe Testing (AV TEST) Initiative.

Child Restraint Systems; Mandatory Applicability Beginning December 5, 2026.

Agency Information Collection Activities; Submission to the Office of Management and Budget for Review and Approval; Request for Comment; Distraction: Personal Electronic Device.

Safety Standard for Debris Penetration Hazards.

Proposed Rule; Availability of Supplemental Information.

Advanced Impaired Driving Prevention Technology.

Side Underride Guards; Extension of Comment Period.