ISO/TR 14823-2:2019

Intelligent transport systems — Graphic data dictionary — Part 2: Examples

This document reports examples of ASN.1 codes based on ISO 14823-1[1], which specifies a graphic data dictionary (GDD) including the ASN.1 coding rule for GDD. NOTE Some of the ASN.1 codes described in this document are re-formatted based on ISO 14813-6. [1] To be published.

Systèmes de transport intelligents — Dictionnaire de données graphiques — Partie 2: Exemples

General Information

• Status: Published
• Publication Date: 02-Sep-2019
• ICS: 35.240.60 - IT applications in transport
• ICS: 43.040.15 - Car informatics. On board computer systems
• Technical Committee: ISO/TC 204 - Intelligent transport systems
• Drafting Committee: ISO/TC 204/WG 10 - Traveller information systems
• Current Stage: 6060 - International Standard published
• Due Date: 08-May-2020
• Completion Date: 03-Sep-2019

Standards Content (Sample)

TECHNICAL ISO/TR
REPORT 14823-2
First edition
2019-09
Intelligent transport systems —
Graphic data dictionary —
Part 2:
Examples
Systèmes de transport intelligents — Dictionnaire de données
graphiques —
Partie 2: Exemples
Reference number
ISO/TR 14823-2:2019(E)
©
ISO 2019

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ISO/TR 14823-2:2019(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
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Published in Switzerland
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ISO/TR 14823-2:2019(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 2
5 Use case . 2
6 Examples of ASN.1 description . 2
6.1 ASN.1 schema . 2
6.2 pictogramCode . 6
6.3 Attributes . 7
6.3.1 Basic structure . 7
6.3.2 applicablePeriod . 7
6.3.3 exempted ApplicablePeriod . 9
6.3.4 signSection .10
6.3.5 numberOfLane and directionalFlowOfLane .11
6.3.6 applicableVehicleDimensions .12
6.3.7 speedLimits .15
6.3.8 rateOfIncline .16
6.3.9 distanceBetweenVehicles .17
6.3.10 destinationInformation .17
6.3.11 Combination of multiple signs with an attribute .24
Bibliography .26
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ISO/TR 14823-2:2019(E)

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 204, Intelligent transport systems.
A list of all parts in the ISO 14823 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
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ISO/TR 14823-2:2019(E)

Introduction
This document presents examples of ASN.1 coding of a Graphic Data Dictionary (GDD) that has been
developed with the intent of creating a common basis for transmitting encoded information for existing
road traffic signs and pictograms. The coding system has been developed to be language independent,
such that data that can be interpreted, irrespective of language or regional differences. It supports
Intelligent Transport System (ITS) applications such as in-vehicle signage or in-vehicle information.
This document supports
— the efficient IT-centric encoding for ITS messaging to represent specific road traffic signs and
pictograms, and
— the consistent decoding of encoded road traffic signs and pictogram data for display in ITS.
This document can support the translation of signs and pictograms with a similar purpose from the
representation used in one country to the representation used in another country.
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TECHNICAL REPORT ISO/TR 14823-2:2019(E)
Intelligent transport systems — Graphic data dictionary —
Part 2:
Examples
1 Scope
1)
This document reports examples of ASN.1 codes based on ISO 14823-1 , which specifies a graphic data
dictionary (GDD) including the ASN.1 coding rule for GDD.
NOTE Some of the ASN.1 codes described in this document are re-formatted based on ISO 14813-6.
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:
— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
3.1
attribute
code attached to the pictogram (3.4) in order to clarify the meaning of the pictogram
3.2
country code
internationally recognised codes stipulated by ISO 3166-1 when referring to countries and subdivisions
of countries
3.3
graphic data dictionary
GDD
catalogue of codes for pictograms (3.4) organised systematically
3.4
pictogram
sign or icon rendered on a display of an IT system such as a computer or VMS to inform travellers of
information such as traffic regulations or public facilities
3.5
pictogram category code
codes assigned to the more detailed category of a pictogram (3.4) type under the service category
3.6
qualifier
parameter for an attribute (3.1) used to express the meaning of pictogram (3.4) quantitatively
1) To be published.
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4 Abbreviated terms
ASN.1 Abstract Syntax Notation One
ITS Intelligent Transport Systems
IT Information Technology
UML Unified Modelling Language
U.N. United Nations
VMS Variable Message Sign
5 Use case
A typical use case of GDD is in-vehicle signage service, which is detailed in ISO/TS 17425.
6 Examples of ASN.1 description
6.1 ASN.1 schema
The ASN.1 description of GDD consists of pictogramCode and attributes. Attributes are optionally
utilised when a pictogram has quantitative factors such as time, length or angle. The ASN.1 schema of
GDD is as follows.
GDD {iso (1) standard (0) gdd(14823) version1 (0)}
DEFINITIONS AUTOMATIC TAGS::=
BEGIN

GddStructure::= SEQUENCE{
pictogramCode    Pictogram,
 attributes      GddAttributes OPTIONAL
}
Pictogram::=SEQUENCE {
 countryCode   Pictogram-countryCode OPTIONAL,
 serviceCategoryCode   Pictogram-serviceCategory,
 pictogramCategoryCode  Pictogram-category
}

Pictogram-countryCode::=OCTET STRING (SIZE (2))

Pictogram-serviceCategory::=CHOICE {
 trafficSignPictogram   Pictogram-trafficSign,
 publicFacilitiesPictogram Pictogram-publicFacilitySign,
 ambientOrRoadConditionPictogram Pictogram-conditionsSign
}
Pictogram-category::= SEQUENCE {
 nature    Pictogram-nature,
 serialNumber    Pictogram-serialNumber
}

Pictogram-trafficSign::=ENUMERATED{
 dangerWarning (11),
 regulatory (12),
 informative (13),
 .
}
Pictogram-publicFacilitySign ::= ENUMERATED {
 publicFacilities (21),
 .
}
Pictogram-conditionsSign::=ENUMERATED{
 ambientCondition(31),
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 roadCondition (32),
 .
}
Pictogram-nature::=INTEGER (1.9)
Pictogram-serialNumber::=INTEGER (0.99)

GddAttributes::= SEQUENCE (SIZE(1.8),.) OF CHOICE{
dtm InternationalSign-applicablePeriod,
edt InternationalSign-exemptedApplicablePeriod,
dfl InternationalSign-directionalFlowOfLane,
ved InternationalSign-applicableVehicleDimensions,
spe InternationalSign-speedLimits,
roi InternationalSign-rateOfIncline,
dbv InternationalSign-distanceBetweenVehicles,
ddd InternationalSign-distinationInformation,
set InternationalSign-section,
nol InternationalSign-numberOfLane
}

InternationalSign-applicablePeriod::= SEQUENCE {
year SEQUENCE {
yearRangeStartYear Year,
yearRangeEndYear Year
} OPTIONAL,
month-day SEQUENCE {
dateRangeStartMonthDate MonthDay,
dateRangeEndMonthDate MonthDay
} OPTIONAL,
repeatingPeriodDayTypes RPDT OPTIONAL,
hourMinutes SEQUENCE {
timeRangeStartTime HoursMinutes,
timeRangeEndTime HoursMinutes
} OPTIONAL,
dateRangeOfWeek DayOfWeek OPTIONAL,
durationHourminute HoursMinutes OPTIONAL
}

MonthDay::= SEQUENCE {
month MonthDay-month,
day MonthDay-day
}
HoursMinutes::= SEQUENCE {
hours HoursMinutes-hours,
mins HoursMinutes-mins
}
Year::=INTEGER(2000.2127,.)
MonthDay-month::=INTEGER (1.12)
MonthDay-day::=INTEGER (1.31)
HoursMinutes-hours::=INTEGER (0.23)
HoursMinutes-mins::=INTEGER (0.59)
RPDT::= BIT STRING {national-holiday (0), even-days(1), odd-days(2), market-day(3) } (SIZE
(4))
DayOfWeek::= BIT STRING {unused(0), monday(1), tuesday(2), wednesday(3), thursday(4),
friday(5), saturday(6), sunday(7)} (SIZE (8))

InternationalSign-exemptedApplicablePeriod::= InternationalSign-applicablePeriod

InternationalSign-section::= SEQUENCE{
startingPointLength  Distance OPTIONAL,
continuityLength   Distance OPTIONAL
}

InternationalSign-numberOfLane::= INTEGER(0.99)

InternationalSign-directionalFlowOfLane::= INTEGER {
  sDL  (1),
  sLT  (2),
  sRT  (3),
  lTO  (4),
  rTO  (5),
  cLL  (6),
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  cRI  (7),
  oVL  (8)
} (1.8)

InternationalSign-applicableVehicleDimensions::= SEQUENCE{
  vehicleHeight  Distance OPTIONAL,
  vehicleWidth  Distance OPTIONAL,
  vehicleLength Distance OPTIONAL,
  vehicleWeight  Weight OPTIONAL
}
Distance::= SEQUENCE{
  value INTEGER(1.16384),
  unit Code-Units(2.4|6.8)
}
Weight::= SEQUENCE {
value INTEGER(1.16384),
unit Code-Units (10.12)
}

Code-Units::= INTEGER {
kmperh (0),
milesperh (1),
kilometre (2),
metre (3),
decimetre (4),
centimetre (5),
mile (6),
yard (7),
foot (8),
minutesOfTime (9),
tonnes (10),
hundredkg (11),
pound (12),
rateOfIncline (13),
durationinminutes (14)
} (0.15)

InternationalSign-speedLimits::= SEQUENCE{
speedLimitMax INTEGER(0.250) OPTIONAL,
speedLimitMin INTEGER(0.250) OPTIONAL,
unit Code-Units (0.1)
}

InternationalSign-rateOfIncline::= INTEGER(1.32)

InternationalSign-distanceBetweenVehicles::= Distance

InternationalSign-distinationInformation::= SEQUENCE{
  junctionDirection     DistinInfo-junctionDirection OPTIONAL,
  roundaboutCwDirection   DistinInfo-roundaboutCwDirection OPTIONAL,
  roundaboutCcwDirection  DistinInfo-roundaboutCcwDirection OPTIONAL,
  ioList          SEQUENCE (SIZE (1.8,.)) OF DistinationInformationIO
  }

DistinationInformationIO::=SEQUENCE{
  arrowDirection         IO-arrowDirection,
  destPlace           SEQUENCE (SIZE (1.4,.)) OF DestinationPlace OPTIONAL,
  destRoad            SEQUENCE (SIZE (1.4,.)) OF DestinationRoad OPTIONAL,
  roadNumberIdentifier      IO-roadNumberIdentifier OPTIONAL,
  streetName           IO-streetName OPTIONAL,
  streetNameText         IO-streetNameText OPTIONAL,
  distanceToDivergingPoint    DistanceOrDuration OPTIONAL,
  distanceToDestinationPlace   DistanceOrDuration OPTIONAL
  }

DestinationPlace::= SEQUENCE{
  destType  DestinationType,
  destRSCode GddStructure (WITH COMPONENTS {., attributes ABSENT}) OPTIONAL,
  destBlob  DestPlace-destBlob OPTIONAL,
  placeNameIdentification  DestPlace-placeNameIdentification OPTIONAL,
placeNameText  DestPlace-placeNameText OPTIONAL
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  }

DestinationRoad::= SEQUENCE{
  derType  DestinationRoadType,
  roadNumberIdentifier  DestRoad-roadNumberIdentifier OPTIONAL,
roadNumberText  DestRoad-roadNumberText OPTIONAL
  }

DistanceOrDuration::= SEQUENCE {
value DistOrDuration-value,
unit DistOrDuration-Units
}

DistinInfo-junctionDirection::=INTEGER(1.128)
DistinInfo-roundaboutCwDirection::=INTEGER(1.128)
DistinInfo-roundaboutCcwDirection::=INTEGER(1.128)

IO-arrowDirection::=INTEGER(0.7)
IO-roadNumberIdentifier::=INTEGER(1.999)
IO-streetName::=INTEGER(1.999)
IO-streetNameText::=UTF8String

DestPlace-destBlob::=OCTET STRING
DestPlace-placeNameIdentification::=INTEGER(1.999)
DestPlace-placeNameText::=UTF8String

DestRoad-roadNumberIdentifier::=INTEGER(1.999)
DestRoad-roadNumberText::= UTF8String

DistOrDuration-value::= INTEGER(1.16384)
DistOrDuration-Units::= Code-Units (2.9)

DestinationRoadType::= INTEGER {
  none          (0),
  nationalHighway    (1),
  localHighway      (2),
  tollExpresswayMotorway (3),
  internationalHighway  (4),
  highway        (5),
  expressway       (6),
  nationalRoad      (7),
  regionalProvincialRoad (8),
  localRoad       (9),
  motorwayJunction    (10),
  diversion       (11),
  rfu1          (12),
  rfu2          (13),
  rfu3          (14),
  rfu4          (15)
  } (0.15, .)

DestinationType::= INTEGER {
  none  (0),
  importantArea     (1),
  principalArea     (2),
  generalArea      (3),
  wellKnownPoint    (4),
  country        (5),
  city         (6),
  street        (7),
  industrialArea    (8),
  historicArea     (9),
  touristicArea     (10),
  culturalArea     (11),
  touristicRoute    (12),
  recommendedRoute   (13),
  touristicAttraction  (14),
  geographicArea    (15)
  } (0.15, .)

END
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ISO/TR 14823-2:2019(E)


6.2 pictogramCode
ASN.1 codes of PictogramCode are shown below. It consists of countryCode, serviceCategoryCode and
pictogramCategoryCode. A countryCode refers to the country or subdivision of country where traffic
signs are used and is decided based on ISO 3166-1. serviceCategoryCode and pictogramCategoryCode
are used to digitally show the meaning of a traffic sign and are decided based on ISO 14823-1:—, Tables
1 and 2.
EXAMPLE 1
Figure 1 is an example sign which indicates an “intersection where the priority is prescribed by the
general priority rule (crossroads)”. The ASN.1 code of this example is shown below.
example1 GddStructure ::= {
  pictogramCode {
   serviceCategoryCode  trafficSignPictogram:11,
   pictogramCategoryCode{
     nature    1,
     serialNumber 11
   }
  }
}

Figure 1 — Sign of example 1
EXAMPLE 2
Figure 2 shows example signs which indicate an overtaking (right hand side of Figure 2) and a parking
(left hand side of Figure 2) is prohibited simultaneously. In this case, each sign's ASN.1 code shall be
coded separately (example2-1 and example2-2) and encoded separately, as ISO 14823-1 does not allow a
sequential structure of GddStructures.
example2-1 GddStructure ::= {
  pictogramCode {
   serviceCategoryCode  trafficSignPictogram:12,
   pictogramCategoryCode{
     nature    5,
     serialNumber 77
   }
  }
}
example2-2 GddStructure ::= {
  pictogramCode {
   serviceCategoryCode  trafficSignPictogram:12,
   pictogramCategoryCode{
     nature    5,
     serialNumber 42
   }
  }
}

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Figure 2 — Sign of example 2
6.3 Attributes
6.3.1 Basic structure
ASN.1 codes of GddAttributes consists of 10 elements that can be used selectively.
6.3.2 applicablePeriod
This attribute indicates the date/time/period status when the sign is valid.
EXAMPLE 3
Figure 3 is an example sign which indicates roadworks will start on 31 December 2017, at 0:00 a.m. and
end on 1 January 2018, at 12:30 a.m. The ASN.1 code of this example is shown below.
example3 GddStructure ::= {
  pictogramCode {
   serviceCategoryCode  trafficSignPictogram:11,
     pictogramCategoryCode{
      nature    1,
      serialNumber 11
     }
   },
attributes{
...