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 ManagementITS Data Repository
Emergency ManagementEmergency Call-Taking
Emergency Data Collection
Emergency Dispatch
Emergency Evacuation Support
Emergency Response Management
Emergency Routing
Incident Command
Emergency VehicleOn-board EV En Route Support
Maintenance and Construction ManagementMCM Automated Treatment System Control
MCM Incident Management
MCM Roadway Maintenance and Construction
MCM Vehicle Tracking
MCM Winter Maintenance Management
MCM Work Zone Management
Maintenance and Construction VehicleMCV Vehicle Location Tracking
MCV Winter Maintenance
Remote Traveler SupportRemote Transit Information Services
RoadwayRoadway Automated Treatment
Roadway Basic Surveillance
Roadway Data Collection
Roadway Equipment Coordination
Roadway Signal Controls
Roadway Signal Preemption
Roadway Signal Priority
Roadway Speed Monitoring and Warning
Roadway Traffic Information Dissemination
Roadway Traffic Metering
Standard Rail Crossing
Traffic ManagementCollect Traffic Surveillance
TMC Evacuation Support
TMC Regional Traffic Management
TMC Signal Control
TMC Traffic Information Dissemination
TMC Traffic Metering
TMC Traffic Network Performance Evaluation
Traffic Data Collection
Transit ManagementTransit Center Fixed-Route Operations
Transit Center Information Services
Transit Center Passenger Counting
Transit Center Security
Transit Center Vehicle Tracking
Transit Data Collection
Transit Evacuation Support
Transit Garage Maintenance
Transit Vehicle Assignment
Transit VehicleOn-board Maintenance
On-board Passenger Counting
On-board Transit Fare Management
On-board Transit Information Services
On-board Transit Security
On-board Transit Signal Priority
On-board Transit Trip Monitoring