Placards
UN Numbers on Hazmat Placards Explained (and NA Numbers)
What the four-digit UN or NA identification number on a hazmat placard means, where it appears, how it differs from the hazard class, and how responders use it.
Lawrence Arya··5 min
Posts tagged Un Numbers from the CDL Placards team.
What the four-digit UN or NA identification number on a hazmat placard means, where it appears, how it differs from the hazard class, and how responders use it.