The Northwest Territories Transportation of Dangerous Goods Act (1990) came into effect on August 1, 1991. The Transportation of Dangerous Goods Act is the territorial complement of the federal Transportation of Dangerous Goods Act. The Transportation of Dangerous Goods Regulations were first amended on August 15, 2002 to meet the clear language requirements and is further amended from time to time. Where the federal legislation applies to the transportation modes subject to its jurisdiction (i.e., air, marine, rail and road transport), the territorial Act applies to road transport operations. In the interests of consistency and national uniformity, the territorial Act references the federal regulations pursuant to the federal Act. In this way, dangerous goods moving in Canada from one mode of transportation to another and/or between jurisdictions are always subject to the same regulations.