Practice question

Why can an “empty” cargo tank or package still be regulated as hazardous?

  1. Empty means never regulated
  2. Only Pennsylvania regulates empty containers
  3. Residue or vapor can remain and present a hazard
  4. Empty containers require passenger endorsements

Answer: C — Residue or vapor can remain and present a hazard

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Practice more: Pennsylvania CDL HazMat Practice Questions - Pennsylvania CDL Hazardous Materials Endorsement Test Exam →