ITS Standards Support for variable speed limit control

Type SDO Title Doc ID
Message/Data AASHTO/ITE/NEMA Data Element Definitions for Transportation Sensor Systems (TSS) NTCIP 1209
AASHTO/ITE/NEMA Global Object Definitions NTCIP 1201
Communications Protocol AASHTO/ITE/NEMA NTCIP Center-to-Field Standards Group NTCIP C2F