In below cases the UN Number must be displayed on the Vehicles, Tanks or Containers
| Tank | Solids, liquids or gases transported (on each compartment of a multi-compartment tank) |
| Container | When only one UN Number is loaded and it is having excess of 4,000 KG gross mass |
| Tanks | Unpackaged LSA-I or SCO-I material of class 7 |
| Vehicle | Unpackaged LSA-I or SCO-I material of class 7 |
| Container | Unpackaged LSA-I or SCO-I material of class 7 |
| Vehicle | Packaged radioactive material with a single UN Number transported under exclusive use |
| Container | Packaged radioactive material with a single UN Number transported under exclusive use |
| Bulk Container | Solid dangerous goods |
UN Number must be displayed in black digits not less than 65 mm high.
Example >>
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