To determine if you need to use placards, which of the following do you NOT need to know?
a) The amount of the substance or material being shipped
b) The manufacturing date of the materials
c) The hazard class of the substance or material
d) The amount of all the hazardous materials of all the hazard classes you are carrying in your vehicle
Answer: b) The manufacturing date of the materials
If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.