No person may display a placard on a freight container unless the material which is transported is a Hazardous Material and the placards must represent the hazard of the hazard material being transported.

Also, no person shall display any sign such as drive safely or any advertisement in the shape, color or content of a placard.

Placards may be displayed for a hazardous material even when not required. If you are transporting a class 3 material and placards are not required, you can display the class 3 placard.

Remember, when you display a placard they must be square on point. They can not be displayed as a square, otherwise point on point.