[DOT 49 CFR 172 Subpart G] Emergency Response Guidebook

The Emergency Response Guidebook (ERG) is a guide designed to assist responders with identification of the hazards of a material during incidents so that they can protect themselves and the public during response activities. Transportation authorities from the US, Canada and Mexico developed the ERG and update it regularly. It is revised and reissued every three or four years. The ERG is available in book form or can be accessed on-line at The current version of the ERG was released in 2000.

Under OSHA (29 CFR 1910.120), EPA (40 CFR 311) and DOT (49 CFR 172 Subpart G), the ERG is used as a tool to provide critical information to emergency responders. Many shippers of hazardous materials use the ERG to provide the required written emergency response information on hazardous materials bills of lading in accordance with 49 CFR 172.604 (b)(3). A new 2004 version of the ERG is currently being prepared. If you would like to pre-order a copy, please contact