Intelligent transport systems - Traffic and travel information messages via traffic message coding - Part 3: Location referencing for Radio Data System - Traffic Message Channel (RDS-TMC) using ALERT-C (ISO 14819-3:2021)

This document specifies location referencing rules to address the specific requirements of Traffic Message Channel (TMC) systems, which use abbreviated coding formats to provide traffic and travel information (TTI) messages over mobile bearers (e.g. GMS, DAB) or via exchange protocols like DATEX
II. In particular, the rules address the Radio Data System-Traffic Message Channel (RDS-TMC), a means
of providing digitally-coded TTI to travellers using a silent data channel on FM radio stations, based on the ALERT-C protocol.

Intelligente Verkehrssysteme - Verkehrs- und Reiseinformationen über Verkehrsmeldungskodierung - Teil 3: Ortsreferenzierung für Radiodatensysteme - Verkehrsmeldungskanal (RDS-TMC) unter Nutzung von ALERT-C (ISO 14819-3:2021)

Dieses Dokument legt Ortsreferenzierungsregeln fest, welche die spezifischen Anforderungen von Verkehrsmeldungskanal-Systemen (TMC-Systemen) adressieren, in denen abgekürzte Kodierungsformate zur Bereitstellung von Verkehrs- und Reiseinformations(TTI)-Meldungen über mobile Träger (z. B. GMS, DAB) oder über Austauschprotokolle wie DATEX II, zum Einsatz kommen. Die Regeln gelten insbesondere für den digitalen Radiokanal für Verkehrsmeldungen (RDS-TMC), den FM-Radiosender nutzen, um Reisenden digital kodierte TTI über einen stummen Datenkanal auf der Basis des ALERT C-Protokolls bereitzustellen.

Systèmes de transport intelligents - Informations sur le trafic et les déplacements via le codage de messages sur le trafic - Partie 3 : Références de localisants pour le système de radiodiffusion de données - canal de messages d'informations sur le trafic (RDS-TMC) avec Alert-C (ISO 14819-3:2021)

Inteligentni transportni sistemi - Sporočila prometnih in potovalnih informacij prek kodiranih prometnih sporočil - 3. del: Navajanje lokacije za radijski podatkovni sistem (RDS) - Prometni informacijski kanal (RDS-TMC), ki uporablja sistem ALERT-C (ISO 14819-3:2021)

General Information

Status
Published
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
24-Feb-2021
Completion Date
24-Feb-2021

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SLOVENSKI STANDARD
SIST EN ISO 14819-3:2021
01-maj-2021
Nadomešča:
SIST EN ISO 14819-3:2014

Inteligentni transportni sistemi - Sporočila prometnih in potovalnih informacij prek

kodiranih prometnih sporočil - 3. del: Navajanje lokacije za radijski podatkovni
sistem (RDS) - Prometni informacijski kanal (RDS-TMC), ki uporablja sistem
ALERT-C (ISO 14819-3:2021)

Intelligent transport systems - Traffic and travel information messages via traffic message

coding - Part 3: Location referencing for Radio Data System - Traffic Message Channel

(RDS-TMC) using ALERT-C (ISO 14819-3:2021)
Intelligente Transportsysteme - Verkehrs- und Reiseinformationen über

Verkehrsmeldungskodierung - Teil 3: Ortsreferenzierung für Radiodatensysteme für den

digitalen Radiokanal für Verkehrsmeldungen (RDS-TMC) unter Nutzung von ALERT-C
(ISO 14819-3:2021)

Systèmes intelligents de transport - Informations sur le trafic et le tourisme via le codage

de messages sur le trafic - Partie 3: Références de localisants pour le système de

radiodiffusion de données (RDS) - Canal de messages d'informations sur le trafic (RDS-

TMC) avec ALERT-C (ISO 14819-3:2021)
Ta slovenski standard je istoveten z: EN ISO 14819-3:2021
ICS:
03.220.20 Cestni transport Road transport
35.240.60 Uporabniške rešitve IT v IT applications in transport
prometu
SIST EN ISO 14819-3:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 14819-3:2021
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SIST EN ISO 14819-3:2021
EN ISO 14819-3
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2021
EUROPÄISCHE NORM
ICS 03.220.20; 35.240.60 Supersedes EN ISO 14819-3:2013
English Version
Intelligent transport systems - Traffic and travel
information messages via traffic message coding - Part 3:
Location referencing for Radio Data System - Traffic
Message Channel (RDS-TMC) using ALERT-C (ISO 14819-
3:2021)

Systèmes de transport intelligents - Informations sur le Intelligente Verkehrssysteme - Verkehrs- und

trafic et les déplacements via le codage de messages Reiseinformationen über Verkehrsmeldungskodierung

sur le trafic - Partie 3 : Références de localisants pour - Teil 3: Ortsreferenzierung für Radiodatensysteme -

le système de radiodiffusion de données - canal de Verkehrsmeldungskanal (RDS-TMC) unter Nutzung

messages d'informations sur le trafic (RDS-TMC) avec von ALERT-C (ISO 14819-3:2021)

Alert-C (ISO 14819-3:2021)
This European Standard was approved by CEN on 30 July 2020.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14819-3:2021 E

worldwide for CEN national Members.
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SIST EN ISO 14819-3:2021
EN ISO 14819-3:2021 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 14819-3:2021
EN ISO 14819-3:2021 (E)
European foreword

This document (EN ISO 14819-3:2021) has been prepared by Technical Committee ISO/TC 204

"Intelligent transport systems" in collaboration with Technical Committee CEN/TC 278 “Intelligent

transport systems” the secretariat of which is held by NEN.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by August 2021, and conflicting national standards shall

be withdrawn at the latest by August 2021.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN ISO 14819-3:2013.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,

Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of

North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the

United Kingdom.
Endorsement notice

The text of ISO 14819-3:2021 has been approved by CEN as EN ISO 14819-3:2021 without any

modification.
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SIST EN ISO 14819-3:2021
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SIST EN ISO 14819-3:2021
INTERNATIONAL ISO
STANDARD 14819-3
Third edition
2021-02
Intelligent transport systems — Traffic
and travel information messages via
traffic message coding —
Part 3:
Location referencing for Radio Data
System-Traffic Message Channel (RDS-
TMC) using ALERT-C
Systèmes de transport intelligents — Informations sur le trafic et le
tourisme via le codage de messages sur le trafic —
Partie 3: Références de localisants pour le système de radiodiffusion
de données (RDS) — Canal de messages d'informations sur le trafic
(RDS-TMC) avec ALERT-C
Reference number
ISO 14819-3:2021(E)
ISO 2021
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SIST EN ISO 14819-3:2021
ISO 14819-3:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
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SIST EN ISO 14819-3:2021
ISO 14819-3:2021(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms, definitions and abbreviated terms ................................................................................................................................ 1

4 Location coding ...................................................................................................................................................................................................... 2

4.1 General ........................................................................................................................................................................................................... 2

4.2 Location tables ........................................................................................................................................................................................ 2

4.2.1 General...................................................................................................................................................................................... 2

4.2.2 Versions and versioning of location tables ................................................................................................ 3

4.2.3 Exchanging location tables ...................................................................................................................................... 3

4.2.4 Hierarchical structure ................................................................................................................................................. 3

4.2.5 Location types .................................................................................................................................................................... 4

4.2.6 Offsets ........................................................................................................................................................................................ 5

4.2.7 Direction of the road ..................................................................................................................................................... 5

4.2.8 Country codes and location table numbers .............................................................................................. 5

4.2.9 Constraints ............................................................................................................................................................................ 6

4.3 TMC location categories, types and subtypes .............................................................................................................. 6

4.4 Location table content ...................................................................................................................................................................... 6

4.4.1 General...................................................................................................................................................................................... 6

4.4.2 Nominal record content ............................................................................................................................................. 6

4.4.3 Road descriptions ........................................................................................................................................................11

4.4.4 Names .....................................................................................................................................................................................12

4.4.5 Upward references ......................................................................................................................................................12

4.4.6 Offsets .....................................................................................................................................................................................12

4.4.7 Urban ......................................................................................................................................................................................12

4.4.8 Intersection reference ..............................................................................................................................................12

4.4.9 WGS84 co-ordinates ..................................................................................................................................................13

4.4.10 InterruptsRoad ...............................................................................................................................................................13

4.5 Detailed junction referencing ..................................................................................................................................................14

4.5.1 Conventional junctions ............................................................................................................................................14

4.5.2 Complex junctions .......................................................................................................................................................14

4.5.3 Detailed coding of link roads ..............................................................................................................................14

4.6 Detailed situation locations ......................................................................................................................................................14

4.6.1 Introduction ......................................................................................................................................................................14

4.6.2 Normal location referencing ...............................................................................................................................14

4.6.3 Detailed location referencing .............................................................................................................................15

4.6.4 Precise location referencing ................................................................................................................................15

4.7 One- and two-way locations .....................................................................................................................................................15

4.7.1 Basic principles ..............................................................................................................................................................15

4.7.2 Junctions ..............................................................................................................................................................................15

4.7.3 Locations with only an exit or entry and locations occurring on one side only.....15

4.7.4 DiversionPos/DiversionNeg ...............................................................................................................................17

Annex A (normative) TMC location categories, types and subtypes ................................................................................18

Annex B (informative) Location table identification ........................................................................................................................26

Annex C (normative) Detailed methods for the usage of location tables ....................................................................32

Annex D (informative) Background information .................................................................................................................................67

Bibliography .............................................................................................................................................................................................................................69

© ISO 2021 – All rights reserved iii
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SIST EN ISO 14819-3:2021
ISO 14819-3:2021(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, in

collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/

TC 278, Intelligent transport systems, in accordance with the Agreement on technical cooperation

between ISO and CEN (Vienna Agreement).

This third edition cancels and replaces the second edition (ISO 14819-3:2013), which has been

technically revised.
The main changes compared to the previous edition are as follows:
The following TISA specifications were integrated:
— Location Table Exchange Format 24.
— Reuse-of-location-codes.
— Roads-and-Junction-number-translation.
— Coding of isolated areas.
— Language identifiers.
— Backward compatibility.
— Coding of name translations and languages in TMC tables.
— DLR methods for locations in TMC Location.
A list of all parts in the ISO 14819 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.
iv © ISO 2021 – All rights reserved
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SIST EN ISO 14819-3:2021
ISO 14819-3:2021(E)
Introduction

This document primarily addresses the needs of RDS-TMC ALERT-C messages which are in widespread

worldwide use. The modular approach used here is intended to facilitate future extension of the location

referencing rules to other traffic and travel messaging systems.

This document sets out ways of specifying places and positions in traffic and travel information

messages, including RDS-TMC messages (the Radio Data System-Traffic Message Channel).

It defines the structure and semantics of location tables for Traffic Information Centres (TICs) and

receivers.
a) Traffic and travel messages:

1) Traffic and travel information is created and updated in an originating database, by human

operators or automated systems. Information is transferred to one or more remote systems by

means of messages.

2) In this context, a message is a collection of data which is exchanged to convey information for an

agreed purpose between two or more parties. Traffic and travel messages are digitally-coded

sets of data exchanged by interested parties, which convey information about traffic, travel

and/or transport networks. Digital coding may be alphanumeric, as in EDIFACT, or binary, as in

RDS-TMC.

3) The traffic and travel messages developed in programmes of the European Union are open,

non-proprietary proposals for standards intended to serve the public interest by facilitating

interconnection and interoperability of the relevant information systems.
b) Location referencing.

Location references provide the means of saying where in traffic and travel messages.

The location referencing component of a traffic and travel message enables a service provider to indicate

the physical location of the event being described. The management of TMC location databases requires

on-going maintenance. It is necessary to both manage location database ID allocation for countries

implementing TMC services and to validate new and updated location databases when ground features

change. These activities are led by service providers who also need to ensure that their end-users

are kept up-to-date. The Traveller Information Services Association (www .tisa .org) manages the ID

allocation on a worldwide basis. TISA provides location database validation for service providers who

generally arrange location database updates on a bi-annual cycle. This certification procedure extends

the basic rules mentioned in this standard and also applies a best-practice validation. TISA grants a

stamp of quality to those location tables that pass a set of tests.
© ISO 2021 – All rights reserved v
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SIST EN ISO 14819-3:2021
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SIST EN ISO 14819-3:2021
INTERNATIONAL STANDARD ISO 14819-3:2021(E)
Intelligent transport systems — Traffic and travel
information messages via traffic message coding —
Part 3:
Location referencing for Radio Data System-Traffic
Message Channel (RDS-TMC) using ALERT-C
1 Scope

This document specifies location referencing rules to address the specific requirements of Traffic

Message Channel (TMC) systems, which use abbreviated coding formats to provide traffic and travel

information (TTI) messages over mobile bearers (e.g. GMS, DAB) or via exchange protocols like DATEX

II. In particular, the rules address the Radio Data System-Traffic Message Channel (RDS-TMC), a means

of providing digitally-coded TTI to travellers using a silent data channel on FM radio stations, based on

the ALERT-C protocol.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 639-1, Codes for the representation of names of languages — Part 1: Alpha-2 code

ISO 14819-1, Intelligent transport systems — Traffic and travel information messages via traffic message

coding — Part 1: Coding protocol for Radio Data System-Traffic Message Channel (RDS-TMC) using ALERT-C

ISO 15924, Information and documentation — Codes for the representation of names of scripts

3 Terms, definitions and abbreviated terms
No terms and definitions are listed in this document.

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/
For the purposes of this document, the following abbreviated terms apply:
ALERT-C Advice and Problem Location for European Road Traffic, Version C
ASCII American Standard Code for Information Interchange
CCD country code
CID country identifier
CLST code of location subtype
CNAME country name
ECC extended country code
EDIFACT Electronic data interchange for administration commerce and transport
© ISO 2021 – All rights reserved 1
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SIST EN ISO 14819-3:2021
ISO 14819-3:2021(E)

GDF geographic data files (for modelling and exchange of geographic data for transport

telematics applications)
LC location code
LTCC location table country code
LTN location table number
POI point of interest
RDS radio data system (digital information channel on FM sub carrier)
TIC traffic information centre
TISA Traveller Information Services Association
TMC traffic message channel
TTI traffic and travel information
WGS84 World Geodetic System 1984
4 Location coding
4.1 General

Location references used by RDS-TMC are covered by the location referencing rules defined in this

subclause. The ALERT-C coding protocol for RDS-TMC is defined in ISO 14819-1.

ALERT-C supports a digital, silent data broadcast service for motorists, providing information about

many kinds of traffic situations. This includes roadwork, weather and traffic incident information

relating to major national and international roads, regional roads and local or urban roads.

4.2 Location tables
4.2.1 General

Within RDS-TMC, locations are identified and referenced by their location code. A given RDS-TMC

service uses a pre-defined location table, containing the pre-stored details of the locations that can be

referenced in messages from that service.

A location code in such a message refers and serves as a tabular ‘address’ of the pre-stored location

details in the location table used by the service. A real-world location may have more than one location

code within the same location table. However, within a given location table, each location code refers to

one and only one location. A location code has a number in the range 1 to 63 487.

In ALERT-C, a further 2048 numbers shall be reserved for INTER-ROAD (see ISO 14819-1) and other

forms of referencing.

A table may contain a maximum number of 65 536 codes allocated in the following way:

Location code Use
0 reserved
1 - 63,487 free for normal location coding
63,488 - 64,511 for special purposes
64,512 - 65,532 for INTER-ROAD
64,533 - 65,535 special functions

NOTE INTER-ROAD is a coding mechanism within ALERT-C to reference in a specific type of ALERT-C

message (the INTER-ROAD message) a location belonging to a different location table. The INTER-ROAD location

can be a table in the same country as well as a table in another country.
2 © ISO 2021 – All rights reserved
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SIST EN ISO 14819-3:2021
ISO 14819-3:2021(E)
4.2.2 Versions and versioning of location tables

Once a location has been allocated, it cannot easily be re-allocated (in an RDS-TMC/ALERT-C

environment). Therefore, all existing locations and their associated location codes in a given location

table should be regarded as fixed. However, other attributes of a location may, within certain

constraints, sometimes change (e.g. name, positive offset, negative offset).

Within each location table, space (unallocated location codes) shall be left to accommodate future

requirements for additional locations (to deal with new construction and location referencing

requirements not originally foreseen).

Whenever new locations are added to, or removed from, a location table (for example to extend coverage

or to reflect changes to the road network), the resulting table shall be treated as a new version. The

creation and tracking of versions of a location table allows the evolution of a location table to be

understood and supports the successful use of the table and associated TMC service. A new version of

an existing location table shall remain compatible with the previous versions of the same location table

– the changes shall not be such that the location of a TMC message could be wrongly interpreted by a

receiver. For example, location codes which are deleted should not be re-used for a long period. Also,

changing the attributes class and type of a location might cause an incompatible version of the table. It

is part of TISA's location certification process to judge if a table is backwards compatible.

The method for identifying and labelling different versions of a location table is shown in C.3.1.

TISA has established an allocation of location tables to show which are in use or available for use in

each country. The responsible agency in a country may apply for additional location table numbers in

future, to support further applications or more detailed, regional location tables. New tables can also be

issued occasionally to allow for complete updates to existing tables. Such major changes will, however,

be very disruptive for users, as existing receivers will not recognize TMC messages relating to the new

location table unless the same location table is also installed in the receiver. Switches from one location

table to a different one (rather than a new version of the same table) should therefore be avoided as far

as possible, especially in established markets.
4.2.3 Exchanging location tables

For TMC services to work well, the different organizations involved need to be able to understand the

location table number, version and contents. To achieve this, a location table exchange format has been

defined.
This format will be used for the exchange of TMC location tables between the var
...

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