The Official USDOT Emergency Response Guidebook (ERG), developed by the Pipeline and Hazardous Materials Safety Administration (PHMSA), is an essential tool for first responders during the initial stages of incidents involving dangerous goods or hazardous materials during transportation.

The ERG app, which is based on the most current edition of the ERG, serves as an indispensable companion for responders. It allows quick and easy access to vital information right at their fingertips. The app includes a comprehensive indexed list of dangerous goods, detailing their identification numbers, general hazards, and recommended safety measures.

In real-world situations, such as an accident involving an overturned tractor trailer with a DOT hazmat placard, emergency responders can efficiently use the app to identify the specific material linked to the placard and receive immediate guidance on effective response strategies.

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