Functional Requirements

Functional requirements 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 subsystems and terminators from the National ITS Architecture. The general descriptions associated with these entities 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 Areas" that provide additional functional detail. At the most detailed level, each functional area includes several specific Functional Requirements that precisely specify the functions to be performed. All three levels of detail are available on this web site. The subsystems and functional areas 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 ManagementTraffic and Roadside Data Archival
Commercial Vehicle AdministrationCredentials and Taxes Administration
Emergency ManagementEmergency Call-Taking
Emergency Dispatch
Emergency Early Warning System
Emergency Evacuation Support
Emergency Response Management
Emergency Routing
Incident Command
Emergency VehicleOn-board EV Incident Management Communication
Information Service ProviderBasic Information Broadcast
Maintenance and Construction ManagementMCM Automated Treatment System Control
MCM Environmental Information Collection
MCM Incident Management
MCM Vehicle Tracking
MCM Winter Maintenance Management
Maintenance and Construction VehicleMCV Environmental Monitoring
MCV Vehicle Location Tracking
MCV Winter Maintenance
Personal Information AccessPersonal Basic Information Reception
Personal Interactive Information Reception
RoadwayRoadway Automated Treatment
Roadway Basic Surveillance
Roadway Data Collection
Roadway Safety Warning System
Roadway Speed Monitoring and Warning
Roadway Traffic Information Dissemination
Roadway Variable Speed Limits
Security MonitoringField Secure Area Surveillance
Traffic ManagementTMC Evacuation Support
TMC Signal Control
TMC Traffic Information Dissemination
TMC Variable Speed Limits
Traffic Data Collection
Transit ManagementTransit Center Fixed-Route Operations
Transit Center Paratransit Operations
Transit Center Vehicle Tracking
Transit VehicleOn-board Passenger Counting
On-board Transit Fare Management