What is Dangerous goods?
'''Dangerous goods''' ('''DG''' in short) are substances that when transported pose risk to health, safety, property and the [[natural environment|environment]]. Certain dangerous goods pose risk even when not being transported. These are known as '''hazardous materials''' ('''HAZMAT''' or '''hazmat''' for short). Hazardous material is often subject under [[chemical regulations]]. Examples of dangerous goods are [[biological hazard]]s, [[flammability|flammable]], [[explosive material]], [[corrosive substance]]s and [[allergen]]s.<ref>{{cite web|title=What are the Dangerous Goods|publisher=Federal Aviation Administration|url=https://www.faa.gov/hazmat/what_is_hazmat|access-date=July 20, 2021}}</ref> ==The packing groups== [[File:Corrugated box - haz mat.jpg|thumb|Doublewall [[corrugated fiberboard]] box with dividers for shipping four bottles of corrosive liquid, UN 4G, certified performance for Packing Group III ]] Packing groups are used for the purpose of determining the degree of protective packaging required for dangerous goods during transportation. * Group I: great danger, and most protective packaging required. Some combinations of different classes of dangerous goods on the same vehicle or in the same [[Shipping container|container]] are forbidden if one of the goods is Group I.<ref>{{cite web | title=Land Transport Rule - Dangerous Goods | url=http://www.nzta.govt.nz/resources/rules/dangerous-goods-2005.html#s3cola | publisher=New Zealand Land Transport Agency | access-date=21 February 2010 | url-status=live | archive-url=https://web.archive.org/web/20100510044816/http://www.nzta.govt.nz/resources/rules/dangerous-goods-2005.html#s3cola | archive-date=10 May 2010 }}</ref> * Group II: medium danger * Group III: minor danger among regulated goods, and least protective packaging within the transportation requirement ==The training== Permit cards or [[license]]s that are used with hazmat training must be shown if requested by officials.<ref>{{cite web|title=Hazmat Transportation and Training Requirement|pu