Final answer:
The Emergency Response Guide (ERG) is a resource for first responders that provides information on responding to hazardous materials incidents. It includes guide numbers for identification and outlines safety measures and protocols to protect responders and the public.
Step-by-step explanation:
The Emergency Response Guide (ERG) is a manual used by emergency services personnel to deal with emergency situations involving hazardous substances. It is primarily used in North America to assist first responders during the initial phase of a transportation incident involving dangerous goods/hazardous materials. The guide provides critical information on health risks, public safety instructions, and environmental precautions.
One essential characteristic of the ERG is its collection of guide numbers. Each number correlates with a specific substance or category of substances, providing response recommendations and safety precautions. First responders use this guide to quickly assess a situation, establish a safe perimeter, and take the necessary steps to protect themselves and the public.