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What must be displayed on a bulk hazmat vehicle in addition to placards?
- A.The driver's CDL number
- B.The cargo's retail price
- C.The four-digit UN identification number for the material, on the placard or on an orange panel or marking as prescribed
- D.The shipper's logo only
Correct answer
C. The four-digit UN identification number for the material, on the placard or on an orange panel or marking as prescribed
Why
The UN number lets responders look up exact response guidance for the specific material, not just its class. On bulk loads it appears on all required sides, positioned with the placard system so it can be read in an emergency.
Manual topic: HazMat - UN Number · From the General Knowledge practice bank (GK-349).