Us department of transportation transport canada and secretariat of transport and communications 2012 2012 emergency response guidebook a guidebook for first responders during the initial phase of a dangerous goods hazardous materials transportation incident. 2012 2012 emergency response guidebook a guidebook for first responders during the initial phase of a dangerous goods hazardous materials transportation incident iowa department of homeland security emergency management. 2012 emergency response guidebook a guidebook for first responders during the initial phase of a dangerous goods hazardous materials transportation incident this guidebook is for use by first responders at the scene of a transportation incident involving dangerous goods it is primarily intended to aid in quickly identifying the materials involved during the initial response phase it . Emergency response guidebook a guidebook for first responders during the initial phase of a dangerous goods hazardous materials incident by united states dept of transportation research and special programs administration canada transport dangerous goods directorate mexico secretaria de comunicaciones y transportes canada transport