Practice question

Hazardous materials must be marked with all of the following, except:

  1. The material’s name.
  2. The material's identification number.
  3. The appropriate hazard label.
  4. The phone number of a contact person.

Answer: D — The phone number of a contact person.

The correct answer is shown above. Try the full quiz for additional practice.

Practice more: Pennsylvania CDL Passenger Test 2 →