role of the highway-rail intersection in the national its architecture ieee wg14 june 20, 2000 bruce...

Role of the Highway-Rail Role of the Highway-Rail Intersection in theIntersection in the

National ITS ArchitectureNational ITS Architecture

IEEE WG14

June 20, 2000

Bruce EisenhartLockheed Martin

ArchitectureDevelopment

Team


TeamAgendaAgenda

What is the National ITS Architecture Highway Rail User Service/ User Service

Requirements Support of HRI in the National ITS

Architecture What can the National ITS Architecture

provide to HRI standards development process?


Team What is an architecture?What is an architecture?

Identifies boundaries and participants

Describes activities or functions

Provides framework for planning, defining, and integrating your ITS


TeamWhy was the National ITS Why was the National ITS Architecture needed?Architecture needed?

Interface standards identification/coordination

ITS complexity ITS integration

CONGESTIONAHEAD


Team

What does the National ITS What does the National ITS Architecture Consist of?Architecture Consist of?

User Services

LogicalArchitecture

PhysicalArchitecture

National ITS Architecture

Requirementseg. Incident Management, HRI

What functions?eg. Detect Incident Verify Incident

Where are the functions?E.g. Traffic Management

Center


TeamPhysical ArchitecturePhysical Architecture

Interfaces

Objectives &Requirements

Solutions

Communications

Transportation

Institutional

Defines physical entity interfaces Distributes functionality 3 layers

Communications Layer How information is transferred

between transportation systems Transportation Layer

What transportation systems transfer what information

Institutional Layer Supporting institutional structure,

policy, and strategies


Team

Physical Architecture EntitiesPhysical Architecture Entities

What is a Physical Architecture Entity? Major “building block” of the architecture

What “types” of entities are there? Terminator:

Users or institutions on the edge of the Architecture

Subsystem: Collection of functions within a single

institutional boundary


Team

Terminators Establish the Terminators Establish the

Architecture BoundaryArchitecture Boundary

Related SystemsEnvironment8 Terminators Including:•Environment•Roadway•Potential Obstacles

Users19 Terminators Including:•Driver•Traffic Operations Personnel•Emergency System Operator

29 Terminators Including:•DMV•Financial Institution•Other Vehicle

The Rest of the World

ITS

Terminators


Team

Physical Architecture SubsystemsPhysical Architecture SubsystemsPhysical Architecture SubsystemsPhysical Architecture SubsystemsTravelers

Vehicles Roadside

Centers

CommercialVehicle

Administration

Archived DataManagement

Vehicle

TransitVehicle

CommercialVehicle

EmergencyVehicle

RemoteTravelerSupport

PersonalInformation

Access

TollAdministration

EmergencyManagement

TrafficManagement

Fleet andFreight

Management

TransitManagement

EmissionsManagement

InformationServiceProvider

Roadway

Toll Collection

ParkingManagement

CommercialVehicleCheck


Team

Physical Architecture SubsystemsPhysical Architecture Subsystemsand Interconnectsand Interconnects

Travelers

Vehicles Roadside

Centers

Wide Area Wireless Communications

Veh

icle

to

Veh

icle

Co

mm

un

icat

ion

s

CommercialVehicle

Administration


Ded

icat

ed S

ho

rt R

ang

e C

om

mu

nic

atio

ns

Vehicle

TransitVehicle

CommercialVehicle

EmergencyVehicle


PersonalInformation

Access

TollAdministration

EmergencyManagement

TrafficManagement

Fleet andFreight

Management

TransitManagement

EmissionsManagement


Roadway

Toll Collection

ParkingManagement


Wireline Communications


TeamConnecting Entities:Architecture Flows

TrafficManagement Roadway Vehicle

signal control status

local traffic flow

environmental conditions

signal control data vehicle probe data

vehicle signage data

• Architecture Flows (456 Total)

– High-level subsystem information exchange

– Considerations for integration


Team

Subsystems are made up of Subsystems are made up of functionsfunctions

Centers

CommercialVehicle

Administration


TollAdministration

EmergencyManagement

TrafficManagement

Fleet andFreight

Management

TransitManagement

EmissionsManagement


• Logical Architecture elements are processes and data flows

Traffic Management Subsystem

Provide Device Control

Manage Travel

Demand

Manage Incidents

Provide Traffic

Surveillance

Logical Architecture defines the functionality required by each subsystem


Team

Logical ArchitectureLogical Architecture

Logical Architecture Defines The Functions To Be Performed The Information Transfers

Between Functions

It Does NOT Define: Where the Functions are Performed

This is the Role of the Physical Architecture How the Functions are Implemented

This isn’t done anywhere in the National ITS Architecture

SelectRoute

DirectDriver

destination

currentposition

trafficconditions

directionsselectedroute

map data

Route Guidance - Logical View


Team

Focused Architecture ViewsFocused Architecture ViewsV

ehic

le to

Veh

icle

Com

mun

icat

ions


Vehicle Subsystems Roadside Subsystems

ParkingManagement

Toll Collection

Roadway

EmergencyVehicle

CommercialVehicle

TransitVehicle

Vehicle

RemoteTraveler Support

Wide Area Wireless Communications

CommercialVehicle

Administration

Freight and FleetManagement

Toll AdministrationEmergency

ManagementTraffic

Management

TransitManagement

EmissionsManagement

Information ServiceProvider

Traveler Subsystems Center Subsystems

PersonalInformation Access

Planning

Wireline Communications

Shor

t Ran

ge W

irel

ess

Com

mun

icat

ions

“Technical Framework” “Transportation Services”

?


Team

Travelers

Vehicles Roadside

Centers


Vehicle

TransitVehicle

CommercialVehicle

EmergencyVehicle


PersonalInformation

Access

TollAdministration

EmergencyManagement

TrafficManagement

Fleet andFreight

Management

TransitManagement

EmissionsManagement


Roadway

Toll Collection

ParkingManagement


CommercialVehicle

Administration

Next Level of Detail:Next Level of Detail:Equipment PackagesEquipment Packages

• Subsystems are comprised of Equipment Packages

EquipmentPackages

TMC Basic Signal Control

TMC Based Freeway Control

HRI Traffic Management


TMC Incident Detection


TeamMarket PackagesMarket Packages

Identify the Pieces of the Architecture Required to Implement a Particular Service Physical Architecture subsets with multiple, related

equipment packages from one or more subsystems”

More Specific Than User Services Segregate Potential Early Deployments From

Higher Risk Services Defined To Support Benefits Analysis with Clear

Ties to Transportation Problems


Team

Focused Architecture View:Focused Architecture View:Market PackagesMarket Packages

Traffic Management Subsystem Roadway Subsystem

TMC Incident Detection

TMC Based Freeway Control

TMC Basic Signal Control Roadway Signal Control

Roadway Basic Surveillance

Roadway Incident Detection

Surface Street Control

EquipmentPackages

Market Package

Subsystems

Traffic Maintenance


Team

Version2.0

19931994

1995

19961997 1998

UserServices

Phase ICompetition

Phase IIArchitecture

PublishedHRI

Update

Current Architecture VersionCurrent Architecture Version

• Published December 1999

Version3.0

1999


Team

National ITS Architecture National ITS Architecture Release 3.0Release 3.0

Where to find it CD-ROM Web Page: http://www.iteris.com/itsarch


TeamHRI in ITS HRI in ITS

HRI User Service

HRI User Service Reqmts

Nat’l ITS Arch Update

Developed 2/96 by FRA, Volpe, and JPL

Created 6/96 byFRA and JPL

Completed 1/97


TeamHRI User Service RequirementsHRI User Service Requirements

Key areas of User Service Requirements Types of Users Interfaces

Non-Real-time Real-time

Active Warning Systems Augment Intersection with Highway traffic control devices Automated Collision Avoidance Function Intelligent Intersection Controller

Standard Crossing (Standard Speed Rail) Advanced Crossing (High Speed Rail) Collision Notification


Team

Example User Service Example User Service RequirementsRequirements

USR Description1.10 Highway-Rail Intersection1.10.0 Highway-Rail Intersection. ITS shall include a Highway-

Rail Intersection (HRI) function to control highway and rail traffic in at-grade HRIs. Two sub-services are supported: Standard Speed Rail Subservice which is applicable to light rail transit, commu

1.10.1 The Highway-Rail Intersection (HRI) shall be applicable to operational, at-grade highway-rail intersections with train operational speeds up to 125 MPH.

1.10.1.1 HRI users shall include light rail transit and rapid rail transit approaching and crossing HRIs.

1.10.1.2 HRI users shall include commuter rail trains approaching and crossing HRIs.

1.10.1.3 HRI users shall include freight and intercity passenger trains approaching and crossing HRIs.


Team

The National ITS Architecture: The National ITS Architecture: Consensus ProcessConsensus Process

The National ITS Architecture is based on Stakeholder Consensus

Developing HRI consensus: Architecture HRI Kickoff and Special Program Review (FRA,

FHWA, FTA, Volpe, AAR, Canac, American Shortline Railroad Association, NCDOT, AASHTO, ITE, ITS America)

Site Visits (Union Pacific, Norfolk Southern/NCDOT) Key Meetings (HRI Technical Working Group, TRB HRI

Session) Direct Discussion and Feedback (Volpe, Canac, AAR, TTI,

UP)


Team

Some Drivers for Physical Some Drivers for Physical Architecture DecisionsArchitecture Decisions

What are the Existing System Boundaries? What are the Crucial Interfaces?

Does the Interface: Span Agencies? Connect Public and Private Sectors? Require Broad and Interoperable Implementation?

Are (Inter)National Standards Desirable?

Where are the Key Performance and Functional Requirements?


Team

The National ITS Architecture: The National ITS Architecture: HRI User Service Addition (1)HRI User Service Addition (1)

WaysideEquipment

IntelligentController

AutomaticGates/Barriers

TrafficSignals

VariableMessage Signs

Surveillance

Short RangeCommunications

TrackCircuits

TRAINAPPROACHING

Rail Operations Traffic Management

What are the current and potential entities and how do they or might they interface ?


Team

The National ITS Architecture: The National ITS Architecture: HRI User Service Addition (2)HRI User Service Addition (2)

WaysideEquipment

IntelligentController

AutomaticGates/Barriers

TrafficSignals

VariableMessage Signs

Surveillance

Short RangeCommunications

TrackCircuits

TRAINAPPROACHING

Rail Operations Traffic Management


VehicleSubsystemWayside

EquipmentTerminator

RailOperationsTerminator

RoadwaySubsystem


Team

Standard Railroad Grade Standard Railroad Grade Crossing Market PackageCrossing Market Package

SubsystemEquipment Package

Terminatorarchitecture

flow

Roadway

Standard SpeedRail Crossing

WaysideEquipment

track status

Traffic

trafficcharacteristics

Pedestrians

Driver

crossingpermission

driverinformation

hristatus

RailOperations

Traffic Management

HRI TrafficManagement

hri advisories

hri status

hri control datahri request


Team

Advanced Railroad Grade Advanced Railroad Grade Crossing Market PackageCrossing Market Package



flow

Roadway

Advanced SpeedRail Crossing

WaysideEquipment

track status

Traffic

trafficcharacteristics

Pedestrians

Driver

crossingpermission

driverinformation

hristatus

RailOperations

Traffic Management

HRI TrafficManagement

hri advisories

hri status

hri control data

hri request

Intersection

blockage notification

Intersectionblockage

notification arriving traininformation


Team

Railroad Operations Railroad Operations Coordination Market PackageCoordination Market Package

Roadway

RailOperations

Traffic Management

Rail OperationsCoordination

hri advisories

hri status

hri control data

hri request

railroadadvisories

railroadschedules


trafficinformation



flow


Team

The National ITS Architecture: The National ITS Architecture: HRI Update SummaryHRI Update Summary

Rail Operations and Wayside Equipment Added as Terminators

Augmented Traffic Management and Roadway Subsystems

New Traffic Management Equipment Packages HRI Traffic Management Rail Operations Coordination

New Roadway Equipment Packages Standard Rail Crossing Advanced Rail Crossing

New Architecture Flows Defined and Mapped to Communications Interconnects New Flows Identified (e.g., Rail Operations to Traffic Management) Existing Supporting Flows Reviewed (e.g., Roadway to Vehicle)

New Market Packages Created


Team ITS StandardsITS Standards

Define subsystem interfaces in more detail

Use National ITS Architecture interface definitions as starting point


TeamArchitecture and StandardsArchitecture and Standards

TrafficManagementSubsystem

Transit ManagementSubsystem

traffic information

request fortraffic information

transit system data

signal priority status

NTCIP Center to Center

Traffic Management Data Dictionary

Transit Communications Interface Profiles

ITS Architecturerequest for signal priority

ITS Standards Message Set

Data Elements Communications

Profile


Team

Links Between Architecture and Standards

TM Data Dictionary

EVENT_IncidentSeverity_code

Data element

incident information

Physical Architecture

ArchitectureFlow

TrafficManagementSubsystem

Emergency Management Subsystem

incident_alert

incident_severity

Logical (Leveled) Architecture

Dataflow (primitive)

Dataflow

ContainsContains

Contains

M A P S T O

Incident-Description

External TMC Message Set

Message Set

Event-Incident Severity

Message

Contains

M A P S T O


Team

How Can Architecture Support How Can Architecture Support Standards DevelopmentStandards Development

Definition of Interfaces in National ITS Architecture serves as starting point for standards effort

Where to find definition of HRI Interfaces: Standards Requirements Package 12: Highway

Rail Intersections Available on CD-ROM- Archdocs/Standards

Requirements Document (pages 640-663) Essential information also on CD-ROM hypertext under

Hypertext View/Standards Requirements


TeamSR Package 12: OutlineSR Package 12: Outline

1 Introduction to Standards Requirements Documentation 2 Introduction: Highway Rail Intersections (HRI) 3 Transaction Sets for Highway Rail Intersection Interfaces 3.1 Rail Operations and Traffic Management Subsystem 3.2 Roadway Subsystem and Traffic Management Subsystem 3.3 Roadway Subsystem and Wayside Equipment Terminator 4 Interface Decomposition 4.1 Traffic Management -> Rail Operations 4.2 Traffic Management -> Roadway Subsystem 4.3 Wayside Equipment -> Roadway Subsystem 4.4 Rail Operations -> Traffic Management 4.5 Roadway Subsystem -> Traffic Management 4.6 Roadway Subsystem -> Wayside Equipment 5 Communications Layer Requirements

6 Constraints 7 Data Dictionary Elements


Team

RSRoadway Subsystem

TMSTraffic Management

Wayside Equipment

Rail Operations

hri statusintersection blockage notification

hri statusintersection blockage notification

hri control datahri request

hri advisories

arriving train informationtrack status

railroad advisoriesrailroad schedules

NationalRegionalProductNone

HRI InterfacesHRI Interfaces


TeamHRI Arch Flows HRI Arch Flows

Source Destination Architecture FlowRail Operations Traffic Management railroad advisoriesRail Operations Traffic Management railroad schedulesRoadway Subsystem Traffic Management hri statusRoadway Subsystem Traffic Management intersection blocking

notificationRoadway Subsystem Wayside Equipment hri statusRoadway Subsystem Wayside Equipment intersection blocking

notificationTraffic Management Rail Operations hri advisoriesTraffic Management Roadway Subsystem hri control dataTraffic Management Roadway Subsystem hri requestWayside Equipment Roadway Subsystem arriving train informationWayside Equipment Roadway Subsystem track status


TeamSummarySummary

National ITS Architecture describes interfaces and information flows critical to HRI as part of ITS

Standards Package 12: HRI is key starting point for development of standards.

role of the highway-rail intersection in the national its architecture ieee wg14 june 20, 2000 bruce...

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