BY GRAPHIC PRODUCTS STAFF. 49 CFR 172.400 specifies that Department of Transportation (DOT) Labels must be used for hazardous materials when they are being transported. It requires that any person who offers a hazardous material for transportation must label the package or containment device.

What does a yellow colored dot label indicate?

All of the companies use the color red for flammability, blue for health, and yellow for reactivity as taken from the National Fire Protection Association (NFPA) color code system.

What color should DOT numbers be?

Color: To ensure visibility, the USDOT number should be printed in colors that contrast with the background – black on white, white on black, light color on a dark background, dark color on a light background, etc.