U.S. Code » Title 49 » Subtitle SUBTITLE IV— INTERSTATE TRANSPORTATION › Part PART B— MOTOR CARRIERS, WATER CARRIERS, BROKERS, AND FREIGHT FORWARDERS › Chapter CHAPTER 145— FEDERAL-STATE RELATIONS

49 U.S.C. § 14506

Identification of vehicles

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(a)Restriction on Requirements.—No State, political subdivision of a State, interstate agency, or other political agency of two or more States may enact or enforce any law, rule, regulation standard, or other provision having the force and effect of law that requires a motor carrier, motor private carrier, freight forwarder, or leasing company to display any form of identification on or in a commercial motor vehicle (as defined in section 14504a), other than forms of identification required by the Secretary of Transportation under section 390.21 of title 49, Code of Federal Regulations.(b)Exception.—Notwithstanding subsection (a), a State may continue to require display of credentials that are required—(1) under the International Registration Plan under section 31704;(2) under the International Fuel Tax Agreement under section 31705 or under an applicable State law if, on October 1, 2006, the State has a form of highway use taxation not subject to collection through the International Fuel Tax Agreement;(3) under a State law regarding motor vehicle license plates or other displays that the Secretary determines are appropriate;(4) in connection with Federal requirements for hazardous materials transportation under section 5103; or(5) in connection with the Federal vehicle inspection standards under section 31136.(Added Pub. L. 109–59, title IV, § 4306(a), Aug. 10, 2005, 119 Stat. 1773; amended Pub. L. 110–244, title III, § 301(q), June 6, 2008, 122 Stat. 1617.)Editorial NotesAmendments

2008—Subsec. (b)(2). Pub. L. 110–244 inserted “or under an applicable State law if, on October 1, 2006, the State has a form of highway use taxation not subject to collection through the International Fuel Tax Agreement” before semicolon at end.

Notes of Decisions
Cited in 6 cases (1 in the last 5 years), 2010–2022 · leading case: Am. Trucking Associations v. City of Los Angeles, 660 F.3d 384 (9th Cir. 2011).
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Am. Trucking Associations v. City of Los Angeles, 660 F.3d 384 (9th Cir. 2011). · cites it 8× “[21] Though it survives preemption by § 14501(c) because of the safety exception, the placard provision may be pre- empted by 49 U.S.C. § 14506 (a), which prevents States from enacting or enforcing any “provision having the force and 17 As discussed in section IV.”
Am. Trucking Assns., Inc. v. Los Angeles, 133 S. Ct. 2096 (2013). · cites it 2× “Most important for our purposes, the court held that §14501(c)(1) does not preempt the agreement’s plac- —————— 1 ATA also contended that a separate provision, 49 U. S. C. §14506 (a), preempts the agreement’s placard requirement.”
Am. Trucking Ass'ns v. City of Los Angeles, 660 F.3d 384 (9th Cir. 2011). · cites it 4× “Though it survives preemption by § 14501(c) because of the safety exception, the placard provision may be preempted by 49 U.S.C. § 14506 (a), which prevents States from enacting or enforcing any "provision having the force and effect of law that requires a motor carrier .”
Am. Trucking Ass'ns v. City of Los Angeles, 596 F.3d 602 (9th Cir. 2010). “ATA asserts that 49 U.S.C. § 14506 (a) precludes states and local agencies from requiring motor carriers to display identification other than that required by the Secretary of Transportation.”
Oles v. City Of New York (S.D.N.Y. 2022). “See 49 U.S.C. § 14506 (a). That argument is also incorrect because the federal law limits state and local regulation of “motor carrier[s], motor private carrier[s], freight forwarder[s], or leasing company[ies].”
Am. Trucking v. the City of Los Angeles (9th Cir. 2010). “ATA asserts that 49 U.S.C. § 14506 (a) precludes states and local agencies from requiring motor carriers to display identification other than that required by the Secretary of Transportation.”
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