Title 49 › Subtitle SUBTITLE IV— - INTERSTATE TRANSPORTATION › Part PART B— - MOTOR CARRIERS, WATER CARRIERS, BROKERS, AND FREIGHT FORWARDERS › Chapter CHAPTER 145— - FEDERAL-STATE RELATIONS › § 14506
States and multi-state or local agencies may not make or enforce rules that force motor carriers, motor private carriers, freight forwarders, or leasing companies to put any kind of ID on or inside a commercial motor vehicle, except for ID the U.S. Secretary of Transportation requires under 49 CFR 390.21. (See section 14504a for the meaning of "commercial motor vehicle.") A State can still require certain credentials to be shown. Those include IDs required by the International Registration Plan (section 31704); the International Fuel Tax Agreement (section 31705) or a state highway-use tax if the state had that tax on October 1, 2006; state laws about license plates or other displays the Secretary approves; federal hazardous-material rules (section 5103); and federal vehicle inspection rules (section 31136).
Full Legal Text
Transportation — Source: USLM XML via OLRC
Legislative History
Reference
Citation
49 U.S.C. § 14506
Title 49 — Transportation
Last Updated
Apr 6, 2026
Release point: 119-73