Title 49 › Subtitle SUBTITLE VI— - MOTOR VEHICLE AND DRIVER PROGRAMS › Part PART B— - COMMERCIAL › Chapter CHAPTER 311— - COMMERCIAL MOTOR VEHICLE SAFETY › Subchapter SUBCHAPTER III— - SAFETY REGULATION › § 31141
The Secretary of Transportation reviews state laws and rules about commercial motor vehicle safety and decides if a state may enforce them. States that get federal safety money must send the Secretary any new law or rule right away. The Secretary will say a state rule is either the same as the federal rule, less strict, or extra/more strict. If it is the same, the state may enforce it. If it is less strict, the state may not enforce it. If it is extra or more strict, the state may enforce it unless the Secretary finds the rule has no safety benefit, conflicts with the federal rule, or would create an unreasonable burden on interstate commerce (the Secretary may consider how similar state rules add up). Anyone, including a state, can ask the Secretary for a waiver of a no-enforcement decision. The Secretary must give a hearing before deciding and must grant the waiver quickly if it is in the public interest and keeps commercial vehicles safe. If the Secretary says a state law may not be enforced, the state gets written notice within 10 days. A person harmed by the Secretary’s decision or by a waiver ruling has 60 days to ask a U.S. court of appeals (the D.C. Circuit or the circuit where they live or do business) for review. The court can grant relief under federal administrative law, and its judgment can be reviewed only by the Supreme Court under 28 U.S.C. 1254. The Secretary can start these reviews on the Secretary’s own or after someone asks.
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Transportation — Source: USLM XML via OLRC
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Reference
Citation
49 U.S.C. § 31141
Title 49 — Transportation
Last Updated
Apr 6, 2026
Release point: 119-73