Legal corpus: the complete U.S. Code (59,740 sections, all 53 titles)

Ingested titles 12–51 and 54 from OLRC USLM XML @119-100 (the whole Code
now, uniform edition; Title 53 is reserved/empty). LegalText 11,221 ->
59,740; repo total 105,704 records. Deterministic (byte-identical rerun,
verified on Title 42's 8,356 sections); make check green. make
legal-us-code default now covers every title.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

legal/us/code/title-49/chapter-311/section-31147.md

@@ -0,0 +1,41 @@
+---
+type: "LegalText"
+title: "49 U.S.C. § 31147"
+description: "Limitations on authority"
+jurisdiction: "us"
+corpus: "united_states_code"
+kind: "code_section"
+title_number: 49
+title_name: "TRANSPORTATION"
+chapter_number: "311"
+chapter_name: "COMMERCIAL MOTOR VEHICLE SAFETY"
+section: "31147"
+citation: "49 U.S.C. § 31147"
+status: "current"
+release_point: "119-100"
+release_date: "2026-06-26"
+source: "official"
+source_url: "https://uscode.house.gov/download/releasepoints/us/pl/119/100/xml_usc49@119-100.zip"
+source_identifier: "/us/usc/t49/s31147"
+source_file: "data/legal/raw/us/code/title-49/usc49.xml"
+source_hash: "762baabb08b38be497692e1d1e21fd8bc0843b4fff66349120973d559b6f1e75"
+raw_snapshot_hash: "0786acdd244d8f42c5a8e8ed1ec2a8dcb47dd0e02a286752710a20745702a4fb"
+text_hash: "8e2eb0f464f8ebadf27a4bc0049ada7d486b5160c208ea18ad2c28cfcade963f"
+retrieved_at: "2026-07-04"
+confidence: "official"
+tags: ["legal", "us-code"]
+---
+
+# 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 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.
+
+(Pub. L. 103–272, § 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. 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.