Though inconsequential to the test performance of a package, DOT markings are critical for package identification and regulation. For the most part, US packaging manufacturers are putting the required information on packaging in both durable and embossed formats, but some minor errors have surfaced. For instance, for the UN emblem, the letters “un” must appear vertically in lower case, while some are using upper case letters. If the emblem is not used, then the upper case letters positioned horizontally are required. Also, for packagings that have more than one certification, some manufacturers were noting the year of manufacture only once, when this information would have to be a part of each certified marking. CFR 178.503 specifically states the sequence for marking information. While the DOT does not consider these non-compliance issues to be a safety issue, it is best that all manufacturers and fillers verify that the markings on their packagings are compliant. Responsibility rests in the hand of the shipper.
DOT/UN Industry News Safety