What does 49 CFR 172.530 (OXYGEN placard) require?
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Based on 49 CFR 172.530, here are the requirements for the OXYGEN placard:
* Background Color: The background color of the placard must be yellow.
* Symbol, Text, Class Number, and Inner Border: The symbol, text, class number, and inner border must all be black.
* General Compliance: In addition to these specific color rules, the placard must also comply with the general placard requirements found in 49 CFR 172.519.
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