SAE J2735_200911

This SAE Standard specifies a message set, and its data frames and data elements specifically for use by applications intended to utilize the 5.9 GHz Dedicated Short Range Communications for Wireless Access in Vehicular Environments (DSRC/WAVE, referenced in this document simply as “DSRC”), communications systems. Although the scope of this Standard is focused on DSRC, this message set, and its data frames and data elements have been designed, to the extent possible, to also be of potential use for applications that may be deployed in conjunction with other wireless communications technologies. This Standard therefore specifies the definitive message structure and provides sufficient background information to allow readers to properly interpret the message definitions from the point of view of an application developer implementing the messages according to the DSRC Standards. This 2nd edition of the standard provides additional DSRC messages developed beyond those defined in the first edition and incorporating feedback from early deployment experience. A uniform method of message encoding, using ASN.1 DER encoding, replaces the implicit binary encoding developed in the first edition, although some binary encoding remains in selected messages for efficiency. The messages defined in this edition have been designed to support deployment in such a way as to remain compatible with additional further planned message content, still in development at this time.