PRESTOCurrent status is WD

-PWI in November, 2000

-NP in January, 2003

-Planning to submit CD in Fall, 2004

What’s ‘PRESTO’? Data Dictionary and Message Sets for Preemption and Prioritization Signal System for Emergency and Public

Transport Vehicles

Cooperative with various systems

-OPTICOM in USA

-FAST in Japan (UTMS)

-TSS in Denmark, e ｔｃ． Media independent

-Beacon

-Radio Transmitter/Receiver

-IR Emitter-Detector, etc.

Purposes of PRESTO

1)Reduces the response time of emergency vehicles

-Early solution of accidents and improvement of arrest rates

-Support for speedy rescue activity and improvement of lifesaving

rates 2)Reduces the traffic accidents associated with en-route

emergency vehicles

3)Improves convenience of public buses, etc.

OPTICOM in USA

TSCTraffic

ManegementCentre

Vehicle

RF-ActiveAntenna

PositionTag

Uplink Information : Vehicle ID, TagID, Position, Speed, etc.

TSS in Denmark

FAST in Japan (UTMS)

Route Guidance

Priority Signal Control

Fire StationTraffic Control Center

Emergency Hospital

Incident Point

Infrared BeaconSafety Support

Warning

Congestion Information Macro Control

Micro Control

Traffic Management Center

In some countries (e.x., Japan), ambulances are not targeted for macro control to avoid violating privacy

Scope for this standard

Roadside Communication Unit

Traffic Management Center

Roadside Unit

In-vehicle Unit

Scope of PRESTO

Process of standardization

Case study -Practical examples -User needs

Extraction of messages within scope

System Architecture (Logical)

　　 -User services　　 -Functions & Messages

Study of data elements

Requirements

Data Registry

Concept

Data registry

TCIPrefer

Data element

Data frameMessage

ISO 14817Central Data Registry and

Data Dictionaries

Development from the NP draft

Priority signal control for PTV is optional

Eliminate recommended speed information

Describe data concept according to ISO 14817

-Data element

-Data frame

-Message

Example of data elements

Descriptive name PSC.authorityClassification:cd

Descriptive name context

Support for public transport

Support for emergency vehicle operations

Definition A unique code indicating an authority body responsible for emergency and public transport vehicles. This code is assigned to each organization controlling vehicles such as busses, police cars, fire engines and ambulances.

Context It is a component of PscVehicleID:frame that is sent to roadside communication units or signal controllers by emergency or public transport vehicles or to signal controllers or other data processing facilities by roadside communication units. Its usage includes vehicle

authentication for the priority signal control service.

Remarks Value details shall be left undefined to allow discretional definition by each country

ASN.1 name PSC-authorityClassification

Format PSC-authorityClassification ::= ENUMERATED {Police, Fire..}

Example of Data frames

Descriptive name PscVehicleID:frame

Descriptive name

context Support for public transport

Support for emergency vehicle operations

Definition An ID that identifies an emergency or a public transport vehicle requesting the priority signal control service. This ID is an aggregate of an authority body code, a municipality or operator code, the fleet management code of the vehicle and other data.

Context It is a component of PscVehicleInformation:message that is sent to roadside communication units or signal controllers by emergency or public transport vehicles or of PscVehicleData:message that is sent to signal controllers or other data processing facilities by roadside communication units. It is used for identifying an emergency or public transport vehicle subject to the priority signal control service.

Remarks This data frame is not used for public transport vehicles in case the priority signal control for these vehicles is not implemented.

ASN.1 name PscVehicleID

ASN.1 Format PscVehicleID ::= SET {

Autority [0] PSC-autorityClassification,

Jurisdiction [1] SP-Country OPTIONAL, -- referred to TCIP

code [2] PSC-vehicleCode OPTIONAL

}

Example of Messages (1)

Descriptive name PscVehicleInformation.message

Descriptive name

context Support for public transport

Support for emergency vehicle operations

Definition The vehicle data of an emergency or a public transport vehicle that includes the country code that the vehicle and the road on which it is travelling belong to, the message transmit time, the vehicle identification data, the priority signal control service request data, current location data and vehicle travel data

Context Emergency or public transport vehicles transmit this message to roadside communication units or signal controllers. A signal controller or other data processing facility uses the message for authenticating an emergency or a public transport vehicle subjects to priority signal control and for identifying the intersection, direction and timing for priority signal control.

Remarks This message is not used for public transport vehicles in case the priority signal control for these vehicles is not implemented. Data the detailed values of which are not defined shall conform to the regulations of the specific country that the vehicle or the road belongs to.

ASN.1 name PscVehicleInformation

ASN.1 Format

PscVehicleInformation ::= SET{

countryOfAVehicleFromVehicle [0] SP-Country OPTIOANL, -- referred to TCIP

countryOfARoadFromVehicle [1] SP-Country OPTIOANL, -- referred to TCIP

vehicleIDFromVehicle [2] PscVehicleID OPTIONAL,

transportModeFromVehicle [3] PSC-transportMode OPTIONAL,

RouteNoFromVehicle [4] SCH-TripID OPTIONAL, -- referred to TCIP

requestFromVehicle [5] PscPrioritySignalRequest OPTIONAL,

LocationFromVehicle [6] PscVehicleCurrentLocation OPTIONAL,

TravelInformationFromVehicle [7] PscTravelInformation OPTIONAL,

timeFromVehicle [8] PSC-transmissionTime OPTIONAL

}

(WITH COMPONENTS {..., vehicleIDFromVehicle PRESENT}|

WITH COMPONENTS {..., requestFromVehicle PRESENT})

Example of Messages (2)

Descriptive name PiSchedAdherenceOffSched:message

Descriptive name

context Support for public transport

Definition The schedule-related data of a public transport vehicle that includes information such as travel route identification code, the delay in the operational timetable, etc..

Context Public transport vehicles transmit this message to roadside communication units or signal controllers. A signal controller or other data processing facility that received a request for the priority signal control service sent by a public transport vehicle performs priority signal control only when the delay time obtained from this message exceeds a predetermined threshold.

Remarks This message is registered in TCIP and not used in case the priority signal control for public transport vehicles is not implemented.

ASN.1 name PiSchedAdherenceOffSched

ASN.1 Format

Referred to TCIP.

List of data conceptDiscriptive name ASN.1 name ASN.1 name in NP draft

Data elementPSC.authorityClassification:cd PSC-authorityClassification PRST-AuthorityClassification

PSC.vehicleCode:nbr PSC-vehicleCode PRST-VehicleCoder

PSC.transportMode:cd PSC-transportMode PRST-TypeOfACar

PSC.prioritySignalRequestFlag:cd PSC-prioritySignalRequestFlag PRST-PrioritySignalRequest

PSC.reqestIntersectionID:nbr PSC-reqestIntersectionID PRST-RequestIntersectionID

PSC.directionAtIntersection:cd PSC-directionAtIntersection PRST-Direction

PSC.spotID:nbr PSC-spotID PRST-SpotID

PSC.spotPassingTime:tm PSC-spotPassingTime PRST-PassingTime

PSC.vehicleSpeed:qty PSC-vehicleSpeed PRST-VehicleSpeed

PSC.vehicleAcceleration:qty PSC-vehicleAcceleration PRST-Acceleration

PSC.travelDistance:qty PSC-travelDistance PRST-TravelDistance

PSC.transmissionTime:tm PSC-transmissionTime PRST-TransmissionTime

Data framePscVehicleID:frame PscVehicleID PrstVehicleID

PscPtioritySignalRequest:frame PscPtioritySignalRequest PrstPrioritySignalRequest

PscVehicleCurrentLocation:frame PscVehicleCurrentLocation PrstCurrentVehicleLocation

PscTravelInformation:frame PscTravelInformation PrstVehicleTravelInformation

PscTravelInformation PscSpotLocation PrstLocation

PscSpotPassingPoint:frame PscSpotPassingPoint PrstVehiclePassingPoint

MessagePscVehicleInformation:message PscVehicleInformation PrstVehicleInformation

PscVehicleData:message PscVehicleData PrstVehicleData

PiSchedAdherenceOffSched:message PiSchedAdherenceOffSched PrstSchedule

List of eliminated data in NP draft

PRST-Jurisdiction

PRST-RunningMode

PRST-InVehicleUnit

PRST-BusTramRouteNo

PrstRecommendedSpeed

PrstRecommendedSpeed