[Congressional Bills 119th Congress]
[From the U.S. Government Publishing Office]
[S. 3536 Introduced in Senate (IS)]

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119th CONGRESS
  1st Session
                                S. 3536

 To amend title 49, United States Code, with respect to the safety of 
          driving automation systems, and for other purposes.


_______________________________________________________________________


                   IN THE SENATE OF THE UNITED STATES

                           December 17, 2025

 Mr. Markey (for himself and Mr. Blumenthal) introduced the following 
 bill; which was read twice and referred to the Committee on Commerce, 
                      Science, and Transportation

_______________________________________________________________________

                                 A BILL


 
 To amend title 49, United States Code, with respect to the safety of 
          driving automation systems, and for other purposes.

    Be it enacted by the Senate and House of Representatives of the 
United States of America in Congress assembled,

SECTION 1. SHORT TITLE.

    This Act may be cited as the ``Stay in Your Lane Act''.

SEC. 2. OPERATIONAL DESIGN DOMAIN RESTRICTION FOR DRIVING SYSTEMS.

    (a) Safe Domains for Driving Automation Systems.--
            (1) In general.--Subchapter II of chapter 301 of title 49, 
        United States Code, is amended by adding at the end the 
        following:
``Sec. 30130. Safe domains for driving automation systems
    ``(a) Definitions.--In this section:
            ``(1) Administrator.--The term `Administrator' means the 
        Administrator of the National Highway Traffic Safety 
        Administration.
            ``(2) Driving automation system.--The term `driving 
        automation system' means the hardware and software that are 
        collectively capable of simultaneously performing all of the 
        lateral and longitudinal vehicle motor control subtasks of the 
        dynamic driving task of a motor vehicle on a sustained basis.
            ``(3) Operational design domain.--The term `operational 
        design domain' means operating conditions, as defined by the 
        manufacturer, under which a driving automation system, or 
        feature thereof, is specifically designed to function safely, 
        including--
                    ``(A) environmental, geographical, and time-of-day 
                restrictions; and
                    ``(B) the requisite presence or absence of certain 
                traffic, road users, or roadway characteristics.
            ``(4) Safely.--The term `safely', with respect to motor 
        vehicle safety, means presenting no more than an 
        inconsequential risk.
    ``(b) Operational Design Domain.--Each manufacturer of a driving 
automation system shall ensure that the driving automation system does 
not operate outside of its operational design domain.
    ``(c) Declarations.--
            ``(1) In general.--Each manufacturer of a driving 
        automation system shall--
                    ``(A) define the operational design domain as the 
                conditions under which the driving automation system, 
                or feature thereof, is designed to function safely; and
                    ``(B) submit to the Administrator a declaration of 
                that definition.
            ``(2) Publication.--Each manufacturer of a driving 
        automation system shall make the declaration submitted by the 
        manufacturer under paragraph (1)(B) available on a publicly 
        accessible website of the manufacturer, which shall be the 
        exact declaration submitted to the Administrator under that 
        paragraph.''.
            (2) Clerical amendment.--The analysis for subchapter II of 
        chapter 301 of title 49, United States Code, is amended by 
        inserting after the item relating to section 30129 the 
        following:

``Sec. 30130. Safe domains for driving automation systems.''.
    (b) Civil Penalties.--Section 30165(a)(1) of title 49, United 
States Code, is amended, in the first sentence, by inserting 
``30130(b),'' after ``30127,''.
    (c) Limited Definition of Motor Vehicle Safety Standard.--Section 
30102(b) of title 49, United States Code, is amended--
            (1) in paragraph (1)--
                    (A) by redesignating subparagraphs (C) through (H) 
                as subparagraphs (D) through (I), respectively; and
                    (B) by inserting after subparagraph (B) the 
                following:
                    ``(C) `motor vehicle safety standard' includes a 
                requirement described in subsections (b) and (c)(1) of 
                section 30130;''; and
            (2) in paragraph (2), by striking ``paragraph (1)(C), (D), 
        (F), or (G) of this subsection'' and inserting ``subparagraph 
        (D), (E), (G), or (H) of paragraph (1)''.
    (d) Effective Date.--This Act and the amendments made by this Act 
shall take effect on the date that is 180 days after the date of 
enactment of this Act.
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