The Official USDOT Emergency Response Guidebook (ERG), developed by the Pipeline and Hazardous Materials Safety Administration (PHMSA), is an essential tool for first responders tackling incidents involving dangerous goods or hazardous materials during transportation. This guidebook is crucial during the initial response phase, providing vital information to ensure safety and effective management of the situation.

Complementing the physical guidebook, the ERG app serves as a dynamic companion, reflecting the most current edition of the ERG. This app is designed to be a quick-reference tool, enabling responders to instantly access an indexed list of dangerous goods. Each entry includes the material's ID number, details on general hazards, and recommended safety precautions, making it an invaluable resource in the field.

In real-world applications, such as an incident involving an overturned tractor trailer with a DOT hazmat placard, the ERG app empowers emergency responders to swiftly identify the hazardous material linked to the placard. This immediate identification allows them to follow the app's guidance on how to respond effectively, ensuring both their safety and the safety of the public.

The ERG is available in full versions in English, French, and Spanish, ensuring accessibility for a wide range of users across different regions.