Trade restriction
artificial restriction on the trade of goods and/or services between two or more countries
A trade restriction is an artificial restriction on the trade of goods and/or services between two or more countries. It is the byproduct of protectionism. However, the term is controversial because what one part may see as a trade restriction another may see as a way to protect consumers from inferior, harmful or dangerous products.
Examples
German purity laws: Beer
Germany required the production of beer to adhere to its purity law. The law, originally implemented in Bavaria in 1516 and eventually becoming law for newly unified Germany in 1871, made many foreign beers unable to be sold in Germany as "beer". This law was struck down in 1987 by the European Court of Justice, but is still voluntarily followed by many German breweries.
US motor vehicle headlamps
Rectangular headlamps were promoted in the United States where round lamps were required until 1975. By 1979, the majority of new cars had rectangular headlamps. Again, the US permitted only two standardized sizes of rectangular sealed-beam lamp: A system of two 200 mm x 142 mm high/low beam units corresponding to the existing 7" round format, or a system of four 165 mm x 100 mm units (two high/low and two high-beam) corresponding to the existing 5+3⁄4 inches (150 mm) round format.
In 1968, the US Department of Transportation outlawed any decorative or protective element in front of the headlamps if the headlamps are switched on.
The public source identifies “Trade restriction” as artificial restriction on the trade of goods and/or services between two or more countries. This brief keeps that definition visible, then builds a research path around Trade, restriction and artificial.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Sep 14, 2026. The linked authority identifier is Q7832074. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1516, 1871, 1987 and 1975.
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This entry incorporates text from “Trade restriction” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.