What does 49 CFR 172.315 (Limited quantities) require?

Short answer

49 CFR 172.315 requires a limited quantity marking on packages of hazardous materials, except for certain classes and divisions, when transported by modes other than air. The marking must be durable, legible, and of a specific size.

The rule says

"A package prepared in accordance with applicable limited quantity requirements in part 173 of this subchapter and offered for transportation by a mode other than air must display the limited quantity marking shown in paragraph (a)(1) of this section." (49 CFR 172.315)

"The square-on-point must be durable, legible and of a size relative to the packaging, readily visible, and must be applied on at least one side or one end of the outer packaging." (49 CFR 172.315)

In plain English

The limited quantity marking is required for packages of hazardous materials transported by truck, rail, or vessel, but not by air. The marking must be clearly visible and durable, and its size must be proportional to the package. This marking is an exception to the usual hazardous materials marking requirements, and it's intended to simplify the transportation of small quantities of hazardous materials. However, there are specific exceptions and limitations to this rule, such as for certain classes and divisions of hazardous materials.

What to do

• Verify that the package meets the limited quantity requirements in part 173 of the subchapter.
• Ensure the limited quantity marking is durable, legible, and of the correct size.
• Apply the marking to at least one side or one end of the outer packaging.
• Check for exceptions and limitations to the limited quantity marking requirement, such as for certain classes and divisions of hazardous materials.