| Type | SDO | Title | Doc ID |
|---|
| Standard Profile | Profile | NTCIP using DATEX | NTCIP-DATEX |
| Message/Data | American Public Transportation Association | Standard for Transit Communications Interface Profiles | APTA TCIP-S-001 3.0.4 |
| 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 |