2020 US Code
Title 49 - Transportation
Subtitle VI - Motor Vehicle and Driver Programs
Part B - Commercial
Chapter 311 - Commercial Motor Vehicle Safety
Subchapter III - Safety Regulation
Sec. 31147 - Limitations on authority

Download PDF
Citation 49 U.S.C. § 31147 (2020)
Section Name §31147. Limitations on authority
Section Text

(a) Traffic Regulations.—This subchapter does not authorize the Secretary of Transportation to prescribe traffic safety regulations or preempt State traffic regulations. However, the Secretary may prescribe traffic regulations to the extent their subject matter was regulated under parts 390–399 of title 49, Code of Federal Regulations, on October 30, 1984.

(b) Regulating the Manufacturing of Vehicles.—This subchapter does not authorize the Secretary to regulate the manufacture of commercial motor vehicles for any purpose, including fuel economy, safety, or emission control.

Source Credit

(Pub. L. 103–272, §1(e), July 5, 1994, 108 Stat. 1013.)

Editorial Notes
Historical and Revision Notes
Revised SectionSource (U.S. Code)Source (Statutes at Large)
31147(a) 49 App.:2519(a). Oct. 30, 1984, Pub. L. 98–554, §229, 98 Stat. 2853.
31147(b) 49 App.:2519(b).

In subsection (a), the word "prescribe" is substituted for "establish or maintain" for consistency in the revised title and with other titles of the United States Code.

Publication Title United States Code, 2018 Edition, Supplement 2, Title 49 - TRANSPORTATION
Category Bills and Statutes
Collection United States Code
SuDoc Class Number Y 1.2/5:
Contained Within Title 49 - TRANSPORTATION
SUBTITLE VI - MOTOR VEHICLE AND DRIVER PROGRAMS
PART B - COMMERCIAL
CHAPTER 311 - COMMERCIAL MOTOR VEHICLE SAFETY
SUBCHAPTER III - SAFETY REGULATION
Sec. 31147 - Limitations on authority
Contains section 31147
Date 2020
Laws In Effect As Of Date January 13, 2021
Positive Law Yes
Disposition standard
Statutes at Large References 98 Stat. 2853
108 Stat. 1013
Public Law References Public Law 98-554, Public Law 103-272
Disclaimer: These codes may not be the most recent version. United States may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.