PlacardingQuestion 52 of 80
When must a four-digit identification number be displayed on or near a placard?
a.Never
b.When required for certain bulk packagings and cargo tanks
c.Only for non-hazardous cargo
d.Only at night
Explanation
Certain shipments, especially bulk packagings and cargo tanks, must display the material's four-digit ID number on the placard or on an orange panel next to it. This number lets responders identify the exact material. It corresponds to the ID number on the shipping paper.
Practice all 80 questions free — no signup required.
Related questions on this topic
- What shape is a hazardous materials placard?
- How must placards be positioned on a vehicle?
- What does the number in the bottom corner of a placard represent?
- There are two placard tables. What is the key difference between Table 1 and Table 2 materials?
- At what total weight of Table 2 hazardous materials must a vehicle be placarded?
- Who is responsible for supplying the placards to the driver?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against CDL Hazardous Materials (H) Endorsement Knowledge Test · How we review