This standard is a companion volume for IEEE Std 1512-2006@ referred to here as the ??Base Standard.?? This standard specifies messages@ data frames@ and data elements for communicating general and cargo information to other responders in support of real-time interagency transportation-related incident management. It addresses the unique disciplines associated with communications dealing with the control and confinement of hazardous materials during and after an incident.The Base Standard specifies messages@ data frames@ and data elements for the basic underlying communication involved in real-time interagency transportation-related incident management. Refer to the Base Standard for specification of the scope of the combination of the Base Standard and companion volumes such as this one. Together@ the Base Standard and companion volumes shall be referred to as the ??IEEE 1512 Family of Standards.??Clause 5 and Clause 6 of this standard present the specified messages@ data frames@ and data elements in ASN.1 format and in XML formats.