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"Functions" are a description of WHAT the system has to do.  In the National ITS Architecture, functions are defined at several different levels, ranging from general subsystem descriptions through somewhat more specific equipment package descriptions to Process Specifications that include substantial detail.  The equipment packages that are associated with one or more elements in the Lower Rio Grande Valley Regional ITS Architecture are listed below.  Each equipment package is a link to more detailed information, including the portion of the Regional ITS Architecture that implements the function, and the National ITS Architecture Process Specifications that may be applicable. 

Subsystem Equipment Package
Archived Data Management Subsystem Government Reporting Systems Support
ITS Data Repository
Traffic and Roadside Data Archival
Virtual Data Warehouse Services
Commercial Vehicle Administration Credentials and Taxes Administration
CV Information Exchange
CV Safety Administration
International CV Administration
Commercial Vehicle Check Citation and Accident Electronic Recording
International Border Crossing
Roadside Electronic Screening
Roadside WIM
Commercial Vehicle Subsystem On-board Cargo Monitoring
On-board CV Electronic Data
On-board Trip Monitoring
Emergency Management Emergency Call-Taking
Emergency Data Collection
Emergency Dispatch
Emergency Environmental Monitoring
Emergency Response Management
Mayday Support
Emergency Vehicle Subsystem On-board EV En Route Support
Fleet and Freight Management Fleet Administration
Fleet Credentials and Taxes Management and Reporting
Fleet HAZMAT Management
Fleet Maintenance Management
Freight Administration and Management
Information Service Provider Basic Information Broadcast
Infrastructure Provided Dynamic Ridesharing
Infrastructure Provided Route Selection
Interactive Infrastructure Information
Maintenance and Construction Management MCM Data Collection
MCM Environmental Information Collection
MCM Environmental Information Processing
MCM Incident Management
MCM Maintenance Decision Support
MCM Roadway Maintenance and Construction
MCM Vehicle and Equipment Maintenance Management
MCM Vehicle Tracking
MCM Work Zone Management
MCM Work Zone Safety Management
Maintenance and Construction Vehicle MCV Infrastructure Monitoring
MCV Roadway Maintenance and Construction
MCV Vehicle Location Tracking
MCV Vehicle Safety Monitoring
MCV Vehicle System Monitoring and Diagnostics
MCV Work Zone Support
Parking Management Parking Coordination
Parking Electronic Payment
Parking Management
Parking Surveillance
Personal Information Access Personal Interactive Information Reception
Remote Traveler Support Remote Mayday I/F
Remote Transit Fare Management
Remote Transit Information Services
Secure Area Monitoring
Roadway Subsystem Advanced Rail Crossing
Roadside Data Collection
Roadside Signal Priority
Roadway Basic Surveillance
Roadway Environmental Monitoring
Roadway Equipment Coordination
Roadway Freeway Control
Roadway Incident Detection
Roadway Probe Beacons
Roadway Signal Controls
Roadway Traffic Information Dissemination
Roadway Work Zone Safety
Roadway Work Zone Traffic Control
Standard Rail Crossing
Toll Administration Toll Administration
Toll Collection Toll Plaza Toll Collection
Traffic Management Collect Traffic Surveillance
HRI Traffic Management
Rail Operations Coordination
TMC Environmental Monitoring
TMC Freeway Management
TMC Incident Detection
TMC Incident Dispatch Coordination/Communication
TMC Probe Information Collection
TMC Regional Traffic Control
TMC Signal Control
TMC Traffic Information Dissemination
TMC Work Zone Traffic Management
Traffic Data Collection
Traffic Maintenance
Transit Management Transit Center Fare and Load Management
Transit Center Fixed-Route Operations
Transit Center Information Services
Transit Center Paratransit Operations
Transit Center Security
Transit Center Tracking and Dispatch
Transit Data Collection
Transit Garage Operations
Transit Vehicle Subsystem On-board Fixed Route Schedule Management
On-board Paratransit Operations
On-board Transit Fare and Load Management
On-board Transit Security
On-board Transit Trip Monitoring
Vehicle Vehicle Location Determination
Vehicle Mayday I/F
Vehicle Probe Support
Vehicle Toll/Parking Interface

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