Entities

An entity is defined in the National ITS Architecture 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

• Authorizing Center (AC)
• Center (CTR)
• Emergency Management Center (EMC)
• Emissions Management Center (EMMC)
• Fleet and Freight Management Center (FFMC)
• Maint and Constr Management Center (MCMC)
• Parking Management Center (PMC)
• Payment Administration Center (PAC)
• Shared Use Transportation Center (SUTC)
• 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)
• Intermodal Terminal (IT)
• ITS Roadway Equipment (ITSRE)
• ITS Roadway Payment Equipment (RPE)
• Parking Area Equipment (PAE)
• Security Monitoring Equipment (SME)
• Traveler Support Equipment (TSE)

Traveler

• Personal (P)
• Personal Information Device (PID)
• Personnel Device (PD)

Vehicle

• Commercial Vehicle OBE (CVOBE)
• Emergency Vehicle OBE (EVOBE)
• Light Vehicle OBE (LVOBE)
• Maint and Constr Vehicle OBE (MCVOBE)
• Transit Vehicle OBE (TVOBE)
• Vehicle (V)

 

ITS Architecture Terminators

Environment

• None

Human

• MMV User (MMVU)
• Pedestrian (PED)

Other System

• None

System

• Alerting and Advisory System (AAS)
• Alternate Mode Transportation Center (AMTC)
• Archived Data User System (ADUS)
• Asset Management System (AMS)
• Basic Commercial Vehicle (BCV)
• Basic Vehicle (BV)
• Care Facility (CF)
• DMV (DMV)
• Enforcement Center (EC)
• Equipment Repair Facility (ERF)
• Event Promoter System (EPS)
• Financial Center (FC)
• Government Reporting Systems (GRS)
• Media (M)
• Other Data Sources (ODS)
• Payment Device (PAYD)
• Rail Operations Center (ROC)
• Surface Transportation Weather Service (STWS)
• Traveler Card (TC)
• Wayside Equipment (WE)
• Weather Service System (WSS)