Functions are a description of WHAT the system has to do. In the architecture, functions are defined at several different levels. Each inventory element is mapped to one or more physical objects from ARC–IT. The general descriptions associated with these physical objects identify functionality in a very general sense. At the next level of detail, most of the ITS elements have been mapped to one or more "Functional Objects" that provide additional functional detail. At the most detailed level, each functional object includes several specific Functional Requirements that more precisely specify the functions to be performed. All three levels of detail are available on this web site. The subsystems and functional objects that are associated with the regional ITS architecture are listed in the table below. Each table entry is a link to more detailed descriptions and functional requirements.

SubsystemFunctional Area
Archived Data SystemArchive Data Repository
Archive Government Reporting
Archive On–Line Analysis and Mining
Archive Situation Data Archival
Authorizing CenterCore Authorization
CenterCenter Connected Vehicle Infrastructure Management
Center Data Collection
Center Data Subscription Management
Center Map Management
Center Permission Management
Center Support Services
Certification SystemCertification of Applications
Certification of Devices
Commercial Vehicle Administration CenterCVAC Credentials and Taxes Administration
CVAC Data Collection
CVAC Information Exchange
CVAC Safety and Security Administration
Commercial Vehicle Check EquipmentCVCE Citation and Accident Electronic Recording
CVCE Electronic Screening
CVCE Safety and Security Inspection
CVCE Weigh–In–Motion
Commercial Vehicle OBECV On–Board Cargo Monitoring
CV On–Board Electronic Screening Support
CV On–Board Safety and Security
CV On–Board Signal Priority
CV On–Board Trip Monitoring
Connected Vehicle Roadside EquipmentRSE Automated Vehicle Operations
RSE CACC Operations
RSE Communications Relay
RSE Data Subscription Management
RSE Device Management
RSE Environmental Monitoring
RSE Incident Scene Safety
RSE Infrastructure Monitoring
RSE Intersection Management
RSE Intersection Safety
RSE Loading Zone Management
RSE Map Management
RSE Parking Management
RSE Position Correction Support
RSE Queue Warning
RSE Rail Crossing Warning
RSE Restricted Lanes Application
RSE Road Closure Management
RSE Situation Monitoring
RSE Speed Management
RSE Speed Warning
RSE Support Services
RSE Traffic Gap Assist
RSE Traffic Monitoring
RSE Transit User Guidance
RSE Traveler Information Communications
RSE Work Zone Safety
Cooperative ITS Credentials Management SystemCCMS Authorization
CCMS Enrollment
CCMS Misbehavior Reporting and Action
CCMS Provisioning
CCMS Revocation
Data Distribution SystemDDS Data Access Management
DDS Data Collection and Aggregation
DDS Support Services
Electric Charging StationElectric Charging Station Management
Emergency Management CenterEmergency Call–Taking
Emergency Commercial Vehicle Response
Emergency Data Collection
Emergency Dispatch
Emergency Early Warning System
Emergency Environmental Monitoring
Emergency Evacuation Support
Emergency Incident Command
Emergency Incident Scene Safety Management
Emergency Notification Support
Emergency Response Management
Emergency Routing
Emergency Secure Area Alarm Support
Emergency Secure Area Sensor Management
Emergency Secure Area Surveillance
Emergency Vehicle OBEEV Barrier System Control
EV On–Board En Route Support
EV On–Board Incident Management Communication
EV Service Patrol Vehicle Operations
Emissions Management CenterEmissions Data Management
Fleet and Freight Management CenterFleet Administration
Fleet Credentials and Taxes Management and Reporting
Freight Administration and Management
ITS Communications EquipmentITS Communications Privacy Protection
ITS Communications Services
ITS ObjectITS Communications Support
ITS Management Support
ITS Security Support
ITS Roadway EquipmentRoadway Barrier System Control
Roadway Basic Surveillance
Roadway Data Collection
Roadway Dynamic Lane Management and Shoulder Use
Roadway Environmental Monitoring
Roadway Field Device Support
Roadway Field Management Station Operation
Roadway Mixed Use Crossing Safety
Roadway Safeguard System Control
Roadway Signal Control
Roadway Signal Preemption
Roadway Speed Monitoring and Warning
Roadway Standard Rail Crossing
Roadway Time Management
Roadway Traffic Information Dissemination
Roadway Traffic Metering
Roadway Variable Speed Limits
Roadway Warning
Roadway Work Zone Traffic Control
Maint and Constr Management CenterMCM Data Collection
MCM Environmental Information Collection
MCM Environmental Information Processing
MCM Field Equipment Maintenance
MCM Incident Management
MCM Infrastructure Monitoring
MCM Maintenance Decision Support
MCM Reduced Speed Zone Warning
MCM Roadway Maintenance
MCM Vehicle Maintenance Management
MCM Vehicle Tracking
MCM Winter Maintenance Management
MCM Work Activity Coordination
MCM Work Zone Management
MCM Work Zone Safety Management
Maint and Constr Vehicle OBEMCV Barrier System Control
MCV Environmental Monitoring
MCV Infrastructure Monitoring
MCV Roadway Maintenance and Construction
MCV Vehicle Location Tracking
MCV Vehicle Safety Monitoring
MCV Vehicle System Monitoring and Diagnostics
MCV Winter Maintenance
MCV Work Zone Support
Map Update SystemMap Management
Object Registration and Discovery SystemObject Registration and Discovery
Parking Management SystemLoading Zone Management
Parking Coordination
Parking Data Collection
Parking Electronic Payment
Parking Management
Payment Administration CenterPAC Data Collection
PAC Payment Administration
Personal Information DevicePersonal Data Subscription Management
Personal Interactive Traveler Information
Personal Intersection Safety
Personal Location Determination
Personal Map Management
Personal Shared Use Planning
Personal Traveler Information Reception
Personal Trip Planning and Route Guidance
Security Monitoring EquipmentField Secure Area Sensor Monitoring
Field Secure Area Surveillance
Service Monitor SystemSM Device Management
SM Time Synchronization
Traffic Management CenterTMC Advanced Rail Crossing Management
TMC Automated Vehicle Operations
TMC Barrier System Management
TMC Basic Surveillance
TMC CACC Operations
TMC Data Collection
TMC Dynamic Lane Management and Shoulder Use
TMC Environmental Monitoring
TMC Evacuation Support
TMC Incident Detection
TMC Incident Dispatch Coordination
TMC Intersection Safety
TMC In–Vehicle Signing Management
TMC Multi–Modal Coordination
TMC Regional Traffic Management
TMC Restricted Lanes CV Application
TMC Road Weather Advisories and Warnings
TMC Roadway Equipment Monitoring
TMC Roadway Warning
TMC Safeguard System Management
TMC Service Patrol Management
TMC Signal Control
TMC Situation Data Management
TMC Speed Warning
TMC Standard Rail Crossing Management
TMC Traffic Gap Assist
TMC Traffic Information Dissemination
TMC Traffic Metering
TMC Variable Speed Limits
TMC Work Zone Traffic Management
Transit Management CenterTransit Center Connection Protection
Transit Center Data Collection
Transit Center Environmental Monitoring
Transit Center Fare Management
Transit Center Fixed–Route Operations
Transit Center Information Services
Transit Center Multi–Modal Coordination
Transit Center Operator Assignment
Transit Center Paratransit Operations
Transit Center Passenger Counting
Transit Center Priority Management
Transit Center Security
Transit Center Vehicle Assignment
Transit Center Vehicle Tracking
Transit Evacuation Support
Transit Garage Maintenance
Transit Vehicle OBETransit Vehicle On–Board Connection Protection
Transit Vehicle On–Board Fare Management
Transit Vehicle On–Board Information Services
Transit Vehicle On–Board Maintenance
Transit Vehicle On–Board Paratransit Operations
Transit Vehicle On–Board Trip Monitoring
Transit Vehicle Passenger Counting
Transit Vehicle Pedestrian Safety
Transit Vehicle Schedule Management
Transit Vehicle Security
Transit Vehicle Signal Priority
Transit Vehicle V2V Safety
Transportation Information CenterTIC Connected Vehicle Traveler Info Distribution
TIC Data Collection
TIC Dynamic Ridesharing
TIC Emergency Traveler Information
TIC Freight–Specific Travel Planning
TIC Interactive Traveler Information
TIC Operations Data Collection
TIC Road Weather Advisories and Warnings
TIC Shared Use
TIC Situation Data Management
TIC Travel Services Information and Reservation
TIC Traveler Information Broadcast
TIC Traveler Telephone Information
TIC Trip Planning
Traveler Support EquipmentTransit Stop Information Services
Traveler Fare Management
Traveler Information Reception
Traveler Interactive Information
Traveler Security
Traveler Trip Planning
Vehicle OBEVehicle Basic Safety Communication
Vehicle Basic Toll/Parking Payment
Vehicle Control Automation
Vehicle Control Warning
Vehicle Cooperative Cruise Control
Vehicle Data Subscription Management
Vehicle Environmental Monitoring
Vehicle Gap Assist
Vehicle Interactive Traveler Information
Vehicle Intersection Warning
Vehicle Location Determination
Vehicle Map Management
Vehicle Payment Service
Vehicle Platoon Operations
Vehicle Queue Warning
Vehicle Rail Crossing Warning
Vehicle Restricted Lanes Application
Vehicle Roadside Information Reception
Vehicle Safety Monitoring
Vehicle Secure Area Access System
Vehicle Situation Data Monitoring
Vehicle Speed Management Assist
Vehicle Support Services
Vehicle System Executive
Vehicle System Monitoring and Diagnostics
Vehicle Traveler Information Reception
Vehicle Trip Planning and Route Guidance
Wide Area Information Disseminator SystemWAID Broadcast Services