Built on the U.S. Department of Transportation (DOT) PHMSA Emergency Response Guidebook (ERG 2024), the ERG app supports initial response actions during transportation incidents involving hazardous materials and dangerous goods. Whether at the scene of a roadway, rail, or shipping incident, users can quickly identify hazards, assess risks, and reference recommended safety actions-even without an internet connection.

For more than 70 years, J. J. Keller & Associates, Inc. has been a trusted leader in safety and regulatory compliance. This app extends that expertise into the field, delivering trusted ERG content in a mobile‑ready, easy‑to‑use format designed for speed and clarity.

Key Features:
• Complete ERG Content
 Browse the full Emergency Response Guidebook in a mobile‑optimized experience.
• Fast, Intuitive Navigation
 Numerically indexed and color‑coded sections help users find information quickly under pressure.
• Search by UN Number or Material Name
 Instantly locate the appropriate ERG response guide for hazardous materials or dangerous goods.
• Visual Identification Support
 Identify materials using hazmat placards, road trailer visuals, and rail car references when details are limited.
• Offline Access
 Fully functional without internet connectivity-ideal for emergency scenes and remote locations.
• Light and Dark Mode
 Optimized for readability in all environments.