49 U.S.C. § 14506
Section 14506 · Identification of vehicles
Amended 2 times on record
Applied in 4 court decisions — leading case American Trucking Associations v. City of Los Angeles (2011)
Most recently applied in American Trucking Assns., Inc. v. Los Angeles (June 2013)
How often courts cite this section
Court decisions citing this, by year.Markers show enactment, consequential amendments, and circuit splits over this section — watch for a citation surge after a change or a disagreement. The dip in the last several years is a data-coverage gap, not a real trend — our corpus holds fewer opinions from the most recent years, so recent citations are undercounted.
(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.
Editorial notes U.S. Code · Office of the Law Revision Counsel
Amendments
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.