S. 3536

119 S3536 IS: Stay in Your Lane Act
 U.S. Senate
 2025-12-17
 text/xml
 EN
 Pursuant to Title 17 Section 105 of the United States Code, this file is not subject to copyright protection and is in the public domain.
 II  119th CONGRESS
  1st Session  S. 3536  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.
1.
Short title
This Act may be cited as the   Stay in Your Lane Act  .
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:
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.