US Department of Transportation (DOT) Pipeline Hazardous Materials Safety Administration
Topic 4 – Marking, Labeling, and Placarding  
Introduction
Topic1: The Hazadous Materials Table
Topic 2: Hazard Classes
Topic 3: Packaging
 Topic 4: Marking, Labeling, and Placarding
Topic 5: Shipping Papers
 Topic 6: Incident Reporting
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Markings, labels, placards examples
Introduction

Hazard warning information is required to be communicated on all packages in which hazardous materials are being transported, unless explicitly excepted in the HMR. Hazardous materials must be marked, labeled, and placarded, as required. This topic covers the HMR requirements relevant to marking, labeling, and placarding of hazardous materials.