What does a green highlighted entry in the ERG material index signify?

• A. A liquid hazard
• B. A toxic inhalation hazard (TIH)
• C. A flammable material
• D. A corrosive substance

Answer: (B)

A green highlighted entry in the Emergency Response Guidebook (ERG) material index signifies a toxic inhalation hazard (TIH). This is an important classification because it alerts emergency responders to the presence of materials that can pose significant health risks through inhalation, which can lead to serious health effects or fatalities if not handled with appropriate precautions. Recognizing a TIH is critical for ensuring the safety of emergency personnel and affected civilians, allowing responders to take necessary measures such as evacuation, protective gear use, or other mitigation strategies. Understanding the classification system and how different hazards are highlighted helps in making informed decisions quickly during an emergency incident, particularly involving hazardous materials.