Ask X3What does 49 CFR 172.540 (POISON GAS placard) require?
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Based on 49 CFR 172.540, the POISON GAS placard must meet the following requirements:
* Background and Symbol: The background of the placard and the symbol must be white.
* Upper Diamond: The background of the upper diamond must be black, and its lower point must be positioned 65 mm (2 5/8 inches) above the horizontal center line.
* Text, Class Number, and Inner Border: The text, class number, and inner border must be black.
* General Standards: In addition to these specific design elements, the placard must also comply with the general requirements found in § 172.519.