ISO/TR 21718:2017

TECHNICAL ISO/TR
REPORT 21718
First edition
2017-11
Intelligent transport systems —
Spatio-temporal data dictionary
for cooperative ITS and automated
driving systems
Systèmes de transport intelligents — Dictionnaire de données spatio-
temporelles pour les systèmes de conduite automatisée et les STI
coopératifs
Reference number
©
ISO 2017
© ISO 2017, Published in Switzerland
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ii © ISO 2017 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 2
5 Contents and descriptive names of data dictionary . 3
6 Data dictionary description . 3
Annex A (informative) Dedicated data type for data dictionary .184
Bibliography .191
Foreword
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This document was prepared by Technical Committee ISO/TC 204, Intelligent transport systems.
iv © ISO 2017 – All rights reserved

Introduction
Cooperative ITS and automated driving systems as energy-saving technology have attracted much
attention. These systems are expected to reduce traffic congestion and achieve smoother transportation.
Recently, car manufacturers, car parts manufacturers and IT companies have started driving tests for
automated driving systems on the public road. Several car manufacturers have released the schedule
of commercial viability and automated driving systems and are expected to put it into practical use
within two or three years.
In the existing ITS applications, geographical information are optimally designed for individual
systems. Thus, a large amount of resources are required in order to create, provide and maintain this
information.
In the future, spatio-temporal data for ITS which includes static and dynamic temporal-spatial data
will be required for Cooperative ITS and automated driving systems. In order to create, provide and
maintain these data, much more resources will be required.
Spatio-temporal data can be used for different types of application systems. A common understanding
and sharing of spatio-temporal data is formulated by this data dictionary. For instance, spatio-temporal
data for ITS includes location information or has relationships with location.
Standardization of spatio-temporal data dictionary is expected to contribute to research and
development and dissemination of cooperative ITS and automated systems by stakeholders.
TECHNICAL REPORT ISO/TR 21718:2017(E)
Intelligent transport systems — Spatio-temporal data
dictionary for cooperative ITS and automated driving
systems
1 Scope
This document describes a spatio-temporal data dictionary for cooperative ITS and automated driving
systems.
This data dictionary includes static data and dynamic data.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
aggregate domain
data concept that defines a grouping of data elements and/or data frames
3.2
data concept
item that may be stored in a data dictionary that refers to an abstraction or thing in the natural world
that can be identified with explicit boundaries and meaning and whose properties and behaviour all
follow the same rules
Note 1 to entry: Data concepts can be classified into the following types: object class, value domain, data element,
aggregate domain, data frame, message, interface dialogue, dictionary document, or module.
3.3
data concept type
categorization of the kind of data concept
3.4
data dictionary
listing of data concepts and their meta-attributes in a consistent format
3.5
data element
data concept represented by a specific value domain that describes a single atomic property about an
object class
Note 1 to entry: A data element is composed of an object class, a property of the represented object class and a
value domain.
3.6
data frame
data concept represented by a specific aggregate domain that describes information of interest through
a useful grouping of more atomic properties about one or more object classes
Note 1 to entry: The grouping may be a set, sequence, or a choice.
3.7
dynamic data
data which has short life-span data such as a position of vehicle
3.8
message
data concept that is a grouping of data elements, data frames, or data elements and data frames that is
used to convey a complete set of information
Note 1 to entry: For the purposes of this document, a message is an abstract description; it is not a specific
instance.
3.9
module
data concept that contains the formal syntactic definition, and optionally the semantic definition, of a
defined set of other data concepts that are all version-controlled as a single unit
Note 1 to entry: A module can be represented in multiple languages (e.g., ASN.1 or XML Schema) and compiled by
computer systems.
3.10
source
document or other reference that was used to develop the pertinent data concept
3.11
spatio-temporal (adjective)
relating to both space and time
3.12
static data
data which do not change automatically
3.13
value domain
data concept that defines a set of permissible values
4 Abbreviated terms
ACC Adaptive Cruise Control systems
APS Assisted Parking System
CACC Cooperative adaptive cruise control
CIWS Cooperative Intersection signal information and violation Warning Systems
CSWS Curve Speed Warning Systems
FVCMS Forward Vehicle Collision Mitigation Systems
GNSS Global Navigation Satellite System
ITS Intelligent Transport Systems
2 © ISO 2017 – All rights reserved

JARI Japan Automobile Research Institute
LCDAS Lane Change Decision Aid Systems
LKAS Lane Keeping Assistance Systems
TISA Traveller Information Services Association
5 Contents and descriptive names of data dictionary
The data dictionary consists of the following items.
Data concept name descriptive name of data concepts
data concept type module/message/data frame/data element/aggregate
domain/value domain
data status category dynamic/static
Definition and description Definition and description of data contents
Data definition of data content by XML schema
structure
Issued by authors who published the source documents
source documents original documents
remark other information
6 Data dictionary description
This data dictionary is described alphabetically.
[a]
absolute geo coordinate
Data concept AbsoluteGeoCoordinate Data status category static
name
Data concept type data element
Definition and AbsoluteGeoCoordinate specifies a geo position with longitude and latitude values
description with a deca micro degree accuracy stored in 24 bit integer value.
Longitude: 24-bit representation of a longitude value in deca micro degree precision.
Latitude: 24-bit representation of a latitude value in deca micro degree precision.
Altitude: Elevation of location in metres above/below Mean Sea Level.
Data
structure 





Issued by source document ISO/TS 21219-22:2017
Remarks
acceleration
Data concept Acceleration Data status category dynamic
name
Data concept type data element
Definition and Acceleration provides a value and unit of vehicle acceleration.
description
Value of unit of acceleration is given by unit code which is assigned as 0,01 m/sec*sec,
0,02 m/sec*sec, 0,1 m/sec*sec, 0,25 m/sec*sec, 1 m/sec*sec, 0,01 G and 0,02 G.
Data
structure




Issued by JARI source document proposed CITS data dictionary
Remarks
acceleration set
Data concept Acceleration Set Data status category dynamic
name
Data concept type data element
Definition and Acceleration Set provides accelerations of three axial directions of vehicle.
description
Data
structure 



Issued by JARI source document proposed CITS data dictionary
Remarks
acceleration confidence
Data concept Acceleration confidence Data status category dynamic
name
Data concept type data element
Definition and AccelerationConfidence provides the confidence of acceleration of the vehicle.
description
It is a confidence level of 95 % of reliability.
Data
structure 

Issued by JARI source document proposed CITS data dictionary
Remarks
4 © ISO 2017 – All rights reserved

accuracy millimetre
Data concept AccuracyMillimetre Data status category static
name
Data concept type value domain
Definition and It is one of the accuracy expressions for a length or distance.
description
Unit is a millimetre.
Data
structure 



Issued by source document ISO 22837:2009
Remarks
advisory point
Data concept AdvisoryPoint Data status category static
name
Data concept type data element
Definition and Advisor Point provides a location and contents of the advisory on the road.
description
Data
structure 




cures="0"/>
cures="0"/>
cures="0"/>





Issued by source document ISO 14296:2016
Remarks
altitude
Data concept Altitude Data status category static
name
Data concept type value domain
Definition and It provides a value of the Altitude of ITRF94 coordinate.
description
Unit of standard resolution is 10 mm and unit of high resolution is 1 cm.
Data
structure 












Issued by source document ISO 14296:2016
Remarks
ambient air pressure
Data concept AmbientAirPressure Data status category dynamic
name
Data concept type data element
Definition and It provides an ambient air pressure sensed by OBU/RSU
description
conformity SAE J2735
The value of data expresses 1,090 hPa from 580 hPa. Value "0" means "unknown", unit
is 2 hPa.
Data
structure 

Issued by JARI source document proposed CITS data dictionary
Remarks
6 © ISO 2017 – All rights reserved

angle of curved road
Data name AngleOfCurvedRoad Data status category static
Data concept type value domain
Definition and Central angle between the curve start point and the curve end point [radian]
description
Data
structure
Issued by source document ISO 11067:2015 CSWS
Remarks
availability of moving adjoining lane
Data concept AvailabilityOfMovingAdjoin-
Data status category static
name ing Lane
Data concept type value domain
Definition It is one of the attributes of the lane. It provides availability of moving to adjoining lanes.
and
description
Data
structure   













Issued by source document ISO 14296:2016
Remarks
available service
Data concept AvailableService Data status category static
name
Data concept type data element
Definition and This is services in Parking Facility
description
(i.e. fuel station, car wash, toilet, restaurant, shop, shower room, break room)
Data
structure
Issued by source document ISO 16787:2016 APS
Remarks
axle location
Data concept AxleLocation Data status category static
name
Data concept type aggregate domain
Definition and This is location of the axle of the vehicle. Location is shown by the length from a bumper.
description
conformity SAE J1939
Unit value of location is given by 4 bit code which is assigned as 0,01 m, 0,05 m,
0,1 m, 0,2 m.
Data
structure 






Issued by JARI source document proposed CITS data dictionary
Remarks Real value of location is the product of a valueOfAlexPosition and unitOfAlex.
axle weight
Data concept AxleWeight Data status category static
name
Data concept type value domain
Definition and It provides the weight of the axle of vehicle.
description
conformity SAE J1939
Unit value of weight is given by 4 bit code which is assigned as 0,1 Kg, 0,2 Kg, 0,5 Kg,
1 kg, 10 Kg, 20 Kg.
8 © ISO 2017 – All rights reserved

Data
structure 






















Issued by JARI source document proposed CITS data dictionary
Remarks Real weight is the product of a valueOfWeight and a unitOfWeight.
azimuth
Data concept Azimuth Data status category dynamic
name
Data concept type value domain
Definition and It provides an angle between a direction of target and direction of reference of the hori-
description zontal plane. Generally, direction of reference is north and clockwise.
Data
structure 


Issued by JARI source document proposed CITS data dictionary
Remarks Real value of Azimuth is the product of an azimuthValue and azimuthUnit.
azimuth and length
Data concept AzimuthAndLength Data status category dynamic
name
Data concept type aggregate domain
Definition and It provides a relative position from reference point to target object.
description
A relative position is expressed by an azimuth and a length.
Data
structure   


Issued by source document ISO 16787:2016 APS
Remarks
azimuth attribute
Data concept AzimuthAttribute Data status category dynamic
name
Data concept type data frame
Definition and AzimuthAttribute provides objects and unit of azimuth.
description
Data
structure 




Issued by JARI source document proposed CITS data dictionary
Remarks
azimuth confidence
Data concept AzimuthConfidence Data status category dynamic
name
Data concept type data frame
Definition and AzimuthConfidence is composed of heading confidence and direction of road confidence.
description
Data
structure  




Issued by JARI source document proposed CITS data dictionary
Remarks
azimuth expression
Data concept AzimuthExpression Data status category dynamic
name
Data concept type data frame
Definition and AzimuthExpression is composed of Azimuth and AzimuthAttribute.
description
10 © ISO 2017 – All rights reserved

Data
structure  




Issued by JARI source document proposed CITS data dictionary
Remarks
azimuth object
Data concept AzimuthObject Data status category dynamic
name
Data concept type data frame
Definition and AzimuthObject indicates the expression object (i.e. device, road, event and region) of
description Azimuth.
Data
structure 






Issued by JARI source document proposed CITS data dictionary
Remarks
azimuth object device
Data concept AzimuthObjectDevice Data status category dynamic
name
Data concept type data frame
Definition and It indicates an OBU or RSU device for azimuth object.
description
Data
structure
Issued by JARI source document proposed CITS data dictionary
Remarks Data Type "EXTERNAL" represents to be defined by other organization, or undefined.
azimuth object event
Data concept AzimuthObjectEvent Data status category dynamic
name
Data concept type data frame
Definition and It indicates the event for azimuth object.
description
Data
structure
Issued by JARI source document proposed CITS data dictionary
Remarks Data Type "EXTERNAL" represents to be defined by other organization, or undefined.
azimuth object region
Data concept AzimuthObjectRegion Data status category dynamic
name
Data concept type data frame
Definition and AzimuthObjectRegion indicates the region for azimuth object.
description
Data
structure
Issued by JARI source document proposed CITS data dictionary
Remarks Data Type "EXTERNAL" represents to be defined by other organization, or undefined.
azimuth object road
Data concept AzimuthObjectRoad Data status category dynamic
name
Data concept type data frame
Definition and AzimuthObjectRoad indicates the road for azimuth object.
description
Data
structure
Issued by JARI source document proposed CITS data dictionary
Remarks Data Type "EXTERNAL" represents to be defined by other organization, or undefined.
azimuth type
Data concept AzimuthType Data status category dynamic
name
Data concept type data element
Definition and AzimuthType indicates "azimuth" or "direction".
description
Data
structure
Issued by JARI source document proposed CITS data dictionary
Remarks True indicates "azimuth", False indicates "direction"
12 © ISO 2017 – All rights reserved

azimuth unit
Data concept AzimuthUnit Data status category dynamic
name
Data concept type value domain
Definition and AzimuthUnit indicates minimum unit of azimuth.
description
Value of Unit of Azimuth is provided by 4 bit code.
Data
structure 




















Issued by JARI source document proposed CITS data dictionary
Remarks
[b]
bad weather condition
Data concept BadWeatherCondition Data status category dynamic
name
Data concept type data frame
Definition and BadWeatherCondition indicates weather condition such as rain, sunshine and ambient
description air pressure.
Data
structure 





Issued by JARI source document proposed CITS data dictionary
Remarks
bearing
Data concept Bearing Data status category dynamic
name
Data concept type value domain
Definition and Bearing stores the value of a bearing angle in a compressed way. The full circle is divid-
description ed into 256 sectors which yields a precision of 360/256 °.
Data
structure 



Issued by source document ISO/TS 21219-22:2017
Remarks
boundary object
Data concept BoundaryObject Data status category static
name
Data concept type data element
Definition and It provides a feature object for indicating the boundary of an individual parking space
description
14 © ISO 2017 – All rights reserved

Data
structure   



Issued by source document ISO 16787:2016 APS
Remarks
brake applied pressure
Data concept BrakeAppliedPressure Data status category dynamic
name
Data concept type value domain
Definition and BrakeAppliedPressure indicates operating pressure or target pressure by brake pres-
description sure ratio that is expressed by dividing full pressure into 15.
Data
structure
Issued by JARI source document proposed CITS data dictionary
Remarks
brake applied status
Data concept BrakeAppliedStatus Data status category dynamic
name
Data concept type data element
Definition and BrakeAppliedStatus indicates status of operating brake or target brake and type of brake.
description
Data
structure  



















































Issued by JARI source document proposed CITS data dictionary
Remarks
16 © ISO 2017 – All rights reserved

brake status
Data concept BrakeStatus Data status category dynamic
name
Data concept type data frame
Definition and BrakeStatus indicates operating status of brake and brake pressure.
description
Data
structure 




Issued by JARI source document proposed CITS data dictionary
Remarks
bridge and tunnel
Data concept BridgeAndTunnel Data status category static
name
Data concept type data element
Definition and It provides the structural specifications of a bridge and tunnel and also provides infor-
description mation on isolated crossing roads.
Data
structure  











Issued by source document ISO 14296:2016
Remarks
bumper height
Data concept BumperHeight Data status category static
name
Data concept type data element
Definition and BumperHeight provides the height of a front bumper and rear bumper.
description
Unit of height is a centimetre.
Data
structure 




Issued by JARI source document proposed CITS data dictionary
Remarks
[c]
cancel effective range
Data concept CancelEffectiveRange Data status category dynamic
name
Data concept type data frame
Definition and CancelEffectiveRange is the flag which enables an effective range or disable.
description
Data
structure
Issued by JARI source document proposed CITS data dictionary
Remarks True indicates "disable", False indicates "enable"
cargo weight
Data concept CargoWeight Data status category dynamic
name
Data concept type value domain
Definition and It is the loading weight of cargo for a vehicle.
description
conformity SAE J1939
Unit value of weight is given by unit code which is assigned as 0,1 Kg, 0,2 Kg, 0,5 Kg, 1 Kg,
10 Kg, 20 Kg.
Data
structure 




Issued by JARI source document proposed CITS data dictionary
Remarks Real weight is the product of the value of weight and unit of weight.
cartographic
Data concept Cartographics Data status category static
name
Data concept type data frame
18 © ISO 2017 – All rights reserved

Definition and Cartographics are the data to make a map, and are used for drawing the background map
description except the road network in ITS.
Cartographics consists of data blocks of CartographicFeatures
Data
structure  











Issued by source document ISO 14296:2016
Remarks
cartographic feature
Data concept CartographicsFeature Data status category static
name
Data concept type data frame
Definition and CartographicFeatures are sub-blocks of Cartographics.
description
Each data block of CartographicFeature is categorized by the Feature Types.
Data
structure  












Issued by source document ISO 14296:2016
Remarks
cartographic figure element
Data concept CartographicsFigureElement Data status categorystatic
name
Data concept type data frame
Definition and Cartographic Figure element provides the shape data of individual map objects.
description
There are three types:point, polyline, polygon, in cartographics figure elements.
Data
structure  
cures="0"/>
cures="0"/>

















Issued by source document ISO 14296:2016
Remarks
cause event
Data concept CauseEvent Data status category static
name
Data concept type data frame
Definition and It provides the cause of traffic regulations and obstacle events that disrupt the traffic flow.
description
For example: accident, fire, disabled vehicle, road obstacle, construction, roadwork, bad
weather, disaster, earthquake caution.
Data
structure
Issued by JARI source document proposed CITS data dictionary
Remarks
caution point
Data concept CautionPoint Data status category static
name
Data concept type data element
Definition and Caution Point provides the location and text of the caution that is provided to the driver.
description
20 © ISO 2017 – All rights reserved

Data
structure 






Issued by source document ISO 14296:2016
Remarks
circle location reference
Data concept CircleLocationReference Data status category dynamic
name
Data concept type data element
Definition and A circle location shall be given by the position of the center and the radius. The center
description position shall be a geo-coordinate pair of longitude and latitude coordinate values that
may be everywhere on the surface. The radius shall be integer-valued and given in metres.
Data
structure






Issued by source document ISO/TS 21219-22:2017
Remarks
clockwise angle direction
Data concept ClockwiseAngleDirection Data status category static
name
Data concept type value domain
Definition and The Clockwise Angle Direction expresses a direction by the clockwise angles that were
description based on a running direction or north.
Value of Angle is 0° to 359° and unit is 1°.
Data
structure 

























Issued by source document ISO 14296:2016
Remarks baseDirection: True indicates "North", False indicates "Heading".
clockwise direction
Data concept ClockwiseDirection Data status category static
name
Data concept type value domain
Definition and The Clockwise Direction expresses a direction by the value of the dial of the clock that
description is based on a running direction or the north.
Data
structure    

...