ADR pictogram 2.1-Flammable gases
by Juhele - uploaded on April 13, 2017, 7:39 pm
Official ADR pictogram (formally, the European Agreement concerning the International Carriage of Dangerous Goods by Road (ADR)) is a 1957 United Nations treaty that governs transnational transport of hazardous materials.
Author: United Nations Economic Commision for Europe
License: Public Domain according to Wikipedia