An entity is defined in the Architecture Reference for Cooperative and Intelligent Transportation (ARC-IT) as either a subsystem or terminator. Subsystems are internal to the ITS architecture whereas terminators are at the boundary of the ITS architecture. The groupings below contain the subsystems first followed by the terminators.
ITS Architecture Subsystems
Centers
- Center (CTR)
- Commercial Vehicle Administration Center (CVAC)
- Emergency Management Center (EMC)
- Emissions Management Center (EMMC)
- Fleet and Freight Management Center (FFMC)
- Maint and Constr Management Center (MCMC)
- Payment Administration Center (PAC)
- Traffic Management Center (TMC)
- Transit Management Center (TRMC)
- Transportation Information Center (TIC)
Roadside
- Commercial Vehicle Check Equipment (CVCE)
- Connected Vehicle Roadside Equipment (RSE)
- Field (FLD)
- ITS Roadway Equipment (ITSRE)
Traveler
- None
Vehicle
- Commercial Vehicle OBE (CVOBE)
- Emergency Vehicle OBE (EVOBE)
- Transit Vehicle OBE (TVOBE)
- Vehicle OBE (VOBE)
ITS Architecture Terminators
Environment
- None
Human
- None
Other System
- None
System
- Alerting and Advisory System (AAS)
- Alternate Mode Transportation Center (AMTC)
- Archived Data User System (ADUS)
- Asset Management System (AMS)
- Maint and Constr Administrative Systems (MCAS)
- Multimodal Crossing Equipment (MCE)
- Rail Operations Center (ROC)
- Surface Transportation Weather Service (STWS)
- Traveler Information Voice System (TIVS)
- Weather Service System (WSS)