Also known as:four pronged test · 4-pronged test · four-prong test · four prong test · four-part test · four-factor test
Written by attorneys · grounded in primary & secondary sources — see below
A four-part analytical framework used to evaluate the constitutionality of government restrictions on commercial speech. The framework first asks whether the speech concerns lawful activity and is not misleading. If that threshold is met, the restriction is valid only when the asserted governmental interest is substantial, the regulation directly advances that interest, and the restriction is no more extensive than necessary.
Sources & Authorities
How it applies
Common Examples
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Streaming Ad Ban on Drug Ads
The State Health Authority bars pharmaceutical companies from advertising prescription drugs on streaming platforms while permitting print ads in medical journals. PharmaCorp runs truthful ads that include risk disclosures. A court applies the four-part test and finds the speech protected at the first step, then examines whether public health qualifies as a substantial interest that the ban directly advances and whether the medium-based restriction is narrowly fitted to the goal.
Below-Cost Sale Advertising Ban
A state statute prohibits large discount chains from advertising below-cost holiday sales in circulars or online. MetroMart runs accurate ads that clearly state the promotional period and prices. A court applies the four-part test, confirms the speech is lawful and nonmisleading, and concludes that the total ban fails the tailoring requirement because narrower disclosure rules could address consumer confusion without suppressing truthful price information.
Select any source to read its text and confirm it supports the definition.
Cases
Study Supplements
Cleveland Board of Education v. Loudermill470 U.S. 532, 541 (1985)
Solar Installer Savings Claims
The State Energy Commission forbids local solar installers from advertising projected monthly bill savings even when based on verified data. SunPeak Solar runs ads that accurately project savings for customers. A court applies the four-part test, finds the speech protected, and holds that the selective ban on one class of advertisers fails both the direct-advancement and reasonable-fit prongs because utilities may still advertise similar estimates.
Lorillard Tobacco Co. v. Reilly533 U.S. 625 (2001)
Performance Banner Ads After Collapse
After a credit union collapse, the Department of Education bars online platforms from running performance-focused banner ads for securities. Midnight Securities continues to run ads that include risk disclosures in small print. A court applies the four-part test and determines that the ads are misleading at the threshold step because the visual hierarchy hides material risk information from unsophisticated investors.
United States v. Stevens559 U.S. 460 (2010)
Newsrack Ban on Commercial Publications
The City of Cincinnati prohibits the placement of newsracks containing commercial publications on public sidewalks while allowing newsracks for noncommercial publications. Discovery Network places racks containing its free magazines that carry paid advertisements. A court applies the four-part test and concludes that the distinction between commercial and noncommercial publications fails the reasonable-fit requirement because the city has not shown why the same sidewalk clutter concerns do not apply equally to both.
City of Cincinnati v. Discovery Network, Inc.507 U.S. 410 (1993)
Beer Label Alcohol Content Ban
A federal regulation prohibits brewers from displaying alcohol content on beer labels. Coors Brewing Company seeks to include accurate alcohol percentages on its labels to inform consumers. A court applies the four-part test, finds the speech lawful and nonmisleading, and determines that the prohibition fails the direct-advancement prong because the government has not shown that the ban materially reduces strength wars among brewers.
Rubin v. Coors Brewing Co.514 U.S. 476 (1995)
Common questions
Frequently Asked
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What is the first step of the four-part test for commercial speech restrictions?+
The first step asks whether the speech concerns lawful activity and is not misleading. If the speech fails this threshold, the government may prohibit it outright without further analysis.
Supporting sources
When does a regulation of commercial speech fail the tailoring requirement?+
A regulation fails the tailoring requirement when it is more extensive than necessary to serve the asserted interest. Courts look for a reasonable fit between the means chosen and the ends pursued, and will invalidate a total ban when narrower alternatives such as disclosure rules would suffice.
Supporting sources
Does the four-part test apply to misleading commercial speech?+
No. Misleading commercial speech receives no First Amendment protection under the test. Only speech that concerns lawful activity and is not misleading triggers the remaining three steps requiring a substantial interest, direct advancement, and reasonable fit.
Supporting sources
447 U.S. 557, 100 S. Ct. 2343, 65 L. Ed. 2d 341 (1980)Property
…asserts, ante , at 566, that "a four-part analysis has developed" from our decisions concerning commercial speech. Under this four-part test a restraint on commercial "communication [that] is neither misleading nor related to unlawful activity" is subject to an intermediate level of scrutiny, and suppression is permitted…