| Type | SDO | Title | Doc ID |
|---|
| Standard Profile | Profile | NTCIP using DATEX | NTCIP–DATEX |
|---|
| Profile | ProtoBuf | ProtoBuf |
| Message/Data | General Transit Feed Specification Discussion Group | General Transit Feed Specification (GTFS) Realtime | GTFS–Realtime |
|---|
| European Committee for Standardization | Service Interface for Real–Time Information (SIRI) | CEN – EN 15531–1 |
| American Public Transportation Association | Standard for Transit Communications Interface Profiles | APTA TCIP–S–001 |
| Institute of Transportation Engineers | Traffic Management Data Dictionary (TMDD) and Message Sets for External Traffic Management Center Communications (MS/ETMCC) | ITE TMDD |
| Communications Protocol | Consortium of AASHTO, ITE, and NEMA | Point–to–Point Protocol Over RS–232 Subnetwork Profile | NTCIP 2103 |
|---|
| Consortium of AASHTO, ITE, and NEMA | Transportation Transport Profile | NTCIP 2201 |