Practice question

What does a UN or NA number identify?

  1. A specific hazardous material or group of materials in transportation
  2. The driver's state of residence
  3. The trailer manufacturer's model year
  4. The Michigan office where the test was taken

Answer: A — A specific hazardous material or group of materials in transportation

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Practice more: Michigan CDL Hazmat Practice Questions - Michigan CDL Hazardous Materials Endorsement Test Exam →