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Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-06 10:51:44 -04:00

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LegalText 49 U.S.C. § 31147 Limitations on authority us united_states_code code_section 49 TRANSPORTATION 311 COMMERCIAL MOTOR VEHICLE SAFETY 31147 49 U.S.C. § 31147 current 119-100 2026-06-26 official https://uscode.house.gov/download/releasepoints/us/pl/119/100/xml_usc49@119-100.zip /us/usc/t49/s31147 data/legal/raw/us/code/title-49/usc49.xml 762baabb08b38be497692e1d1e21fd8bc0843b4fff66349120973d559b6f1e75 0786acdd244d8f42c5a8e8ed1ec2a8dcb47dd0e02a286752710a20745702a4fb 8e2eb0f464f8ebadf27a4bc0049ada7d486b5160c208ea18ad2c28cfcade963f 2026-07-04 official
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49 U.S.C. § 31147 - Limitations on authority

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 390399 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.

(Pub. L. 103272, § 1(e), July 5, 1994, 108 Stat. 1013.)

Notes

Historical and Revision Notes RevisedSectionSource (U.S. Code)Source (Statutes at Large) 31147(a)49 App.:2519(a).Oct. 30, 1984, Pub. L. 98554, § 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.