Practice question

What does a four-digit UN or NA identification number help emergency responders identify?

The driver license number
The hazardous material involved
The carrier insurance policy
The trailer registration year

Answer: B — The hazardous material involved

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

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