| Type | SDO | Title | Doc ID |
|---|
| Message/Data | AASHTO/ITE/NEMA | Field Management Stations (FMS) - Part 1: Object Definitions for Signal System Masters | NTCIP 1210 |
| AASHTO/ITE/NEMA | Global Object Definitions | NTCIP 1201 |
| AASHTO/ITE/NEMA | Object Definitions for Actuated Traffic Signal Controller (ASC) Units | NTCIP 1202 |
| AASHTO/ITE/NEMA | Object Definitions for Conflict Monitor Units (CMU) | NTCIP 1214 |
| AASHTO/ITE/NEMA | Object Definitions for Signal Control and Prioritization (SCP) | NTCIP 1211 |
| Communications Protocol | AASHTO/ITE/NEMA | NTCIP Center-to-Field Standards Group | NTCIP C2F |