1. National and Regional ITS Architectures Courtesy of Bart Cima, IBI Group

2. Overview What is the National ITS Architecture? User Services
Logical Architecture
Physical Architecture
Market Packages
Developing a Regional ITS Architecture
Information Sources

3. What is the National ITS Architecture?

4. What is the National ITS Architecture?
Provides a structured approach for planning, defining, and integrating intelligent transportation systems that meet national and regional needs
Defines:
Types of systems to be deployed
Functionality of the systems
Information exchanged between the systems
The National ITS Architecture is a framework for ITS planning that builds on the systems engineering approach.

5. The National ITS Architecture Is a “Tool”
Framework
Identifies ITS components and interconnections
Vocabulary
Uses specific terms for clear communications
Guidance
For development of ITS project
For early identification of integration opportunities
For compliance with ITS Standards
For customized development of a Regional ITS Architecture

6. Federal Regulations FHWA Rule and FTA Policy
Regions deploying ITS projects shall use the National ITS Architecture to develop a Regional ITS Architecture
All ITS projects shall subsequently adhere to the Regional ITS Architecture and ITS Standards
Applies to all ITS projects that are funded in whole or in part with the Highway Trust Fund (including Mass Transit Account)

7. Entry Points Into the Architecture
Source: National ITS Architecture – Version 5

8. User Services

9. What is a User Service?
Defines What ITS Should Do From the User's Perspective
Represents a Broad Range of Users
Allows System or Project Definition to Begin by Establishing the High Level Services That Will Be Provided to Address Identified Problems and Needs

10. User Services Bundles Travel and Traffic Management
Public Transportation Management
Electronic Payment
Commercial Vehicle Operations
Emergency Management
Advanced Vehicle Safety Systems
Information Management
Maintenance and Construction Operations

11. Travel and Traffic Management
1.1 Pre-trip Travel Information
1.2 En-route Driver Information
1.3 Route Guidance
1.4 Ride Matching And Reservation
1.5 Traveler Services Information
1.6 Traffic Control
1.7 Incident Management
1.8 Travel Demand Management
1.9 Emissions Testing And Mitigation
1.10 Highway Rail Intersection

12. Transit and E-Payment 2.0 Public Transportation Management
2.2 En-route Transit Information
2.3 Personalized Public Transit
2.4 Public Travel Security
3.0 Electronic Payment
3.1 Electronic Payment Services

13. Logical Architecture

14. Logical Architecture
Defines the Processes (the Activities and Functions) That Are Required to Provide the Required User Services
Many Different Processes Must Work Together and Share Information to Provide a User Service
Can Be Implemented Via Software, Hardware, or Firmware
Independent of Technologies and Implementations

15. Data Flow Diagram
Show the Functions That Are Required for ITS and the Information That Moves Between These Functions
Circles Represent the Processes or Functions
Arrows Represent the Data Flows
Parallel Lines Represent Data Stores
Rectangles Represent the Terminators

16. Manage ITS Data Flow Diagram
Information Management
Emergency Management
Travel & Traffic Management
Electronic Payment
Public Transportation Management
Commercial Vehicle Operations
Advanced Vehicle Safety Systems
M&C Ops
Source: Version 5 National ITS Architecture

17. Manage Traffic – User Services
1.1 Pre Trip Travel Information
1.2 En-Route Driver Information
1.5 Traveler Services Information
1.6 Traffic Control
1.7 Incident Management
1.8 Travel Demand Management
1.9 Emission Testing and Mitigation
1.10 Highway Rail Intersections
3.1 Electronic Payment Services
5.3 Disaster Response and Evacuation
7.1 Archived Data Function
8.1 Maintenance and Construction Operations

18. Breakdown of Manage Traffic
1.1 Provide Traffic Surveillance
1.2 Provide Device Control
1.3 Manage Incidents
1.4 Manage Travel Demand
1.5 Manage Emissions
1.6 Manage Highway Rail Intersections

19. 1.2 Provide Device Control
1.2.1 Select Strategy
1.2.2 Determine Road and Freeway State
1.2.3 Determine Ramp State
1.2.4 Output Control Data
1.2.5 Manage Parking Lot State
1.2.6 Maintain Static Data for TMC
1.2.7 Provide Roadside Control Facilities
1.2.8 Collect and Process Indicator Fault Data

20. Source: Version 5 National ITS Architecture

21. Process Specification
Provides an Overview of the Process
Set of Functional Requirements
Complete Set of Inputs and Outputs
Data Dictionary

22. 1.2.7.1-Process Indicator Output Data for Roads
Implement the indicator output data
Provide control at intersections or pedestrian crossings
Provide the interface for data for units that manage multimodal crossings or highway-rail intersections
Monitor the status of the indicator equipment and provide fault status
Includes list of Data Inputs and Outputs

24. Physical Architecture

25. Physical Architecture
Forms a high-level structure around the processes and data flows in the Logical Architecture
Defines the Physical Entities and Their Connections
Relates to Solutions as Implemented

26. Subsystems
Individual physical systems that comprise the overall ITS program
Four Types
Center
Field
Vehicle
Traveler

27. National ITS Architecture Subsystems
Source: Version 5 National ITS Architecture

28. Key Terms Equipment Packages: The building blocks of subsystems.
Examples: “Onboard Transit Signal Priority”, “Roadway Basic Surveillance”
Architecture Flows: Data exchanged between ITS subsystems.
Examples: “signal control data”, “traffic images”
Market Packages:
Links needs to appropriate solutions provided by ITS applications
Define the components (equipment packages and subsystems) and interfaces (architecture flows) needed to implement a particular solution

29. Market Package Service Areas
Advanced Traveler Information Systems
Advanced Traffic Management Systems
Advanced Public Transportation Systems
Emergency Management
Maintenance and Construction Management
Archived Data Management
Commercial Vehicle Operations
Advanced Vehicle Safety Systems
USER SERVICES
Travel and Traffic Management
Public Transportation Management
Electronic Payment
Emergency Management
Maintenance and Construction Operations
Information Management
Commercial Vehicle Operations
Advanced Vehicle Safety Systems

30. Market Package Example
Architecture Flow
Subsystem
Equipment Package
Source: Version 5 National ITS Architecture

31. Market Package Example
APTS7 –
Multi -
modal Coordination
Source: Version 5 National ITS Architecture

32. Market Package Example

33. Consolidated View of the Architecture
Source: City of Seattle ITS Master Plan (IBI Group)

34. Developing a Regional Architecture

35. What is a Regional ITS Architecture?
A framework for implementing and integrating ITS with a region
Planning tool for identifying gaps in existing and planned ITS deployments versus transportation needs
Involves working with agencies to document partnerships, roles, and responsibilities.

36. Developing a Regional ITS Architecture
Source:
Regional ITS Architecture Guidance: Developing, Using and Maintaining an ITS Architecture For Your Region (October 2001)

37. Regional ITS Architecture Elements
Description Of The Region
Identification Of Stakeholders
Operational Concept
Required Agreements
System Functional Requirements
Interface Requirements And Information Exchanges
Identification Of ITS Technical Standards
Sequence Of Projects Required For Implementation

38. Operational Concept Development
Operational Concept Defines:
Institutional Relationships Among Organizations
Roles And Responsibilities
Information Exchange

39. Agreements Between Organizations
Documents Current Status of ITS Agreements
Identifies Needed Agreements as New Projects are Deployed
Provides Guidance on Elements of New Agreement

40. Technical Framework Provides Guidance For Defining
System Functional Requirements
Interface Requirements
Information Exchanges

41. ITS Technical Standards
Allows systems to “talk to each other”
Removes dependency on one vendor
FHWA will tie funding to use of standards
Identifies Key Regional ITS Technical Standards
Provides Guidance on Use of Standards

42. Fitting It Together

43. Why Develop a Regional ITS Architecture?
Saves Time and Money During Project Development
Guides Coordination Among Individual Projects
Sets Direction for Improving Efficiency of Transportation System
Provides Framework for Sharing Information Among Agencies and General Public
Reduces Cost of Implementation
Conformance With the Federal ITS Requirements Is Required to Receive Federal Highway Trust Funds

44. Information Sources National ITS Architecture: US DOT ITS Program:
US DOT ITS Program:
ITS Standards:
ITS Benefits and Costs
ITS America
ITS Washington