ARC-IT V8 Workshop ARCHITECTURE OVERVIEW · 2017-09-08 · ARCHITECTURE OVERVIEW ARC-IT V8...
Transcript of ARC-IT V8 Workshop ARCHITECTURE OVERVIEW · 2017-09-08 · ARCHITECTURE OVERVIEW ARC-IT V8...
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ARCHITECTURE OVERVIEWARC-IT V8 Workshop
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2U.S. Department of TransportationITS Joint Program Office
ARC-IT combines services of National ITS Arch with connected vehicle content of CVRIA
ARC-IT Scope
National ITS Architecture CVRIA
ARC-IT
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3U.S. Department of TransportationITS Joint Program Office
ARC-IT is comprised of the following□ Architecture Details contained in▪ Databases▪ Diagram files
□ Architecture Website▪ Hyperlinked view of architecture information
□ Support Tools▪ Regional Architecture Development (RAD-IT)▪ Project Architecture Development (SET-IT)
ARC-IT Scope
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4U.S. Department of TransportationITS Joint Program Office
Defined around 4 views:
□ Enterprises to carry out services
□ Functions to implement services
□ Physical objects to implement that functionality
□ Communications protocols necessary
ARC-IT Structure
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5U.S. Department of TransportationITS Joint Program Office
ARC-IT organized around Service Packages □ Represent the portion of each view that provides a single ITS
service User Services (from 1992) have been “retired”
ARC-IT Organization
Service Packages
Service Packages
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6U.S. Department of TransportationITS Joint Program Office
Service Packages grouped by Area
ARC-IT Service Packages
Traffic Management Traveler Information
Maintenance and Construction Management
Commercial Vehicle Operations
•☻◘
Public Safety
Public Transportation
Data Management Vehicle SafetyParking Management
Support
Sustainable Travel
Weather
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7U.S. Department of TransportationITS Joint Program Office
Depicts:□ Physical objects that interact to
deliver services□ Interfaces and flows of information
between those physical objects Identifies options for…
□ What are the interfaces to support ITS services?
□ What functionality is allocated to physical objects?
□ What objects require information security safeguards and what are they?
ARC-IT Physical View
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8U.S. Department of TransportationITS Joint Program Office
Key “building blocks” of Physical View The physical systems, devices, vehicles, or people that
provide ITS services Two Types
□ Subsystems▪ Functionality defined
□ Terminators▪ No Functionality▪ Three types
Physical View- Physical Objects
Subsystems
TerminatorsTerminators
Terminators
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9U.S. Department of TransportationITS Joint Program Office
Organized into 5 Classes
Physical View- Physical Objects
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10U.S. Department of TransportationITS Joint Program Office
Centers□ Provide Key Operational
functionality for ITS Services
□ Subsystem names use “center” (vs subsystems in earlier versions)
□ Includes generic Center to address how support functions interface with all centers.
Physical View- Physical Objects
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Physical View- Physical Objects
Field Equipment□ ITS Field Devices both ▪ Long in use (e.g. CCTV, Traffic
Signals, DMS) and ▪ New (e.g. Connected Vehicle
Roadside Equipment and Electric Charging Stations)
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Physical View- Physical Objects
Vehicles□ ITS equipment in vehicles
(on-board equipment)□ Includes Freight Equipment
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13U.S. Department of TransportationITS Joint Program Office
Traveler Devices□ Personal Devices (e.g.
smart phones, tablets, and computers)
□ Public Devices (e.g. kiosks and transit stop signage)
Physical View- Physical Objects
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Support Systems□ Includes non operational
use of data (e.g. Archived Data System)
□ Systems that support operations ▪ for all ITS (e.g. Map
Update System)▪ For connected vehicle
specific services (e.g. cooperative ITS credentials management system)
Physical View- Physical Objects
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Physical View- Interconnect Diagram
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16U.S. Department of TransportationITS Joint Program Office
Represent People or Systems “on the edge” of the scope of ARC-IT Three primary types
□ System□ Other Systems□ Humans
Within each type organized by class□ Center/ Field/ Vehicle/ etc.
Physical View- Terminators
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Functional Objects are functional building blocks of Subsystems□ Define the functions and interfaces required to support a
“deployable” piece of the subsystem□ Functional requirements are defined for each functional object□ Replaces “Equipment Packages”
Physical View- Functional Objects
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18U.S. Department of TransportationITS Joint Program Office
Service Packages in the Physical View are defined by a set of:□ Physical Objects□ Functional Objects□ Information Flows
Plus a diagram showing all how all these are connected.
Physical View- Service Packages
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19U.S. Department of TransportationITS Joint Program Office
Service Package Example –Transit Signal Priority
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20U.S. Department of TransportationITS Joint Program Office
Security Analysis of Physical Objects and Information flows included□ Based on the FIPS-199 analysis ▪ Confidentiality, Integrity, Availability ▪ Security Device Classes
□ Lays the groundwork for following the NIST cybersecurity framework
Physical View: Security
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Depicts:□ Layered communications
protocols that support communications between physical objects
Identifies options for each “triple”…□ Identity and appropriateness of protocols at
all layers□ How these protocols ensure or support:▪ Security▪ Privacy
□ Status of protocols as standards or privately provided protocols and the implications of their use from an evolve-ability perspective
ARC-IT Communications View
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ARC-IT Communications View Example
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23U.S. Department of TransportationITS Joint Program Office
Depicts:□ Relationships between
organizations□ Roles organizations play in
delivery of ITS services
Organized around Enterprise Objects□ Interact to exchange information
□ Manage or Operate Systems
Details of View will be added in Version 8.1
ARC-IT Enterprise View
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24U.S. Department of TransportationITS Joint Program Office
Depicts:□ Abstract functional objects (processes)□ Flows of data between those
processes Identifies options for…
□ What functionality is in physical objects?
□ What are the interfaces between logical objects?
□ What data flows between those functional objects?
Details of View will be added in Version 8.1
ARC-IT Functional View
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25U.S. Department of TransportationITS Joint Program Office
ARC-IT Website
www.arc-it.net
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26U.S. Department of TransportationITS Joint Program Office
ARC-IT Resources