This image is from a collection commissioned by the United States Department of Transportation and designed by AIGA. It is copyright-free, and is available here.
File:Aiga railtransportation 25.svg یک نسخهٔ برداری از این پرونده است. آن پرونده را هنگامی که بهتر بود میبایست به جای این نسخهٔ تصویر استفاده کرد.
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This image is from a collection commissioned by the United States Department of Transportation and designed by AIGA. It is copyright-free, and is available [http://www.aiga.org/content.cfm/symbolsigns here].