Ask X3What does 49 CFR 172.508 (Placarding and affixing placards: Rail) require?
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Based on 49 CFR 172.508:
1. If you are shipping hazardous materials by rail: You must affix the required placards to the rail car containing the material. You are allowed to use placards already displayed on motor vehicles, transport containers, or portable tanks to meet this requirement, as long as those placards conform to the proper regulations.
2. If you are a rail carrier: You are prohibited from accepting a rail car containing hazardous materials for transportation unless the required placards are properly affixed to it.
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