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 14819-1:2021)

The ALERT-C protocol is designed to provide mostly event-oriented road end-user information
messages.
This document specifies the messages which are presented to the user in accordance with a set of
general requirements. It defines the message structure and content and its presentation to the end-user.
The message management component of this document describes the message management functions
of RDS-TMC. The ALERT-C protocol distinguishes between user messages and system messages. User
messages are those potentially made known to the end-user, as defined in Clause 5. System messages
are of use only to the RDS-TMC terminal, for message management purposes.
RDS-TMC information comprises both ‘system information’ and ‘user messages’. System information
relates to the TMC service and details the parameters that the terminal needs to be able to find,
identify and decode the TMC information. System information is transmitted in type 3A groups and in
type 8A groups.
User messages contain the details of the traffic events; these may use one or more type 8A groups. Most
messages may be transmitted using a single type 8A group, however messages with more detail (e.g.
diversion advice) may use up to a total of five, type 8A groups.
The transmission component of this document conveys the messages over-air. The ALERT-C protocol,
used by RDS-TMC, has the fundamental approach of aiming to code most messages entirely within a
single RDS group.
The ALERT-C Event List, which contains all event descriptions, is described in ISO 14819‑2.

Intelligente Transportsysteme - Verkehrs- und Reiseinformationen über Verkehrsmeldungskodierung - Teil 1: Kodierungsprotokoll für den digitalen Radiokanal für Verkehrsmeldungen (RDS-TMC) unter Nutzung von ALERT-C (ISO 14819-1:2021)

Systèmes intelligents de transport - Informations sur le trafic et le tourisme via le codage de messages sur le trafic - Partie 1: Protocole de codage pour le système de radiodiffusion de données (RDS) - Canal de messages d'informations sur le trafic (RDS-TMC) avec ALERT-C (ISO 14819-1:2021)

Inteligentni transportni sistemi - Sporočila prometnih in potovalnih informacij prek kodiranih prometnih sporočil - 1. del: Kodirni protokol za radijski podatkovni sistem - Prometni informacijski kanal (RDS-TMC), ki uporablja sistem ALERT-C (ISO 14819-1:2021)

General Information

Status
Published
Public Enquiry End Date
10-Nov-2019
Publication Date
04-May-2021
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Apr-2021
Due Date
06-Jun-2021
Completion Date
05-May-2021

RELATIONS

Buy Standard

Standard
SIST EN ISO 14819-1:2021 - BARVE na PDF-str 13
English language
66 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

SLOVENSKI STANDARD
SIST EN ISO 14819-1:2021
01-junij-2021
Nadomešča:
SIST EN ISO 14819-1:2014

Inteligentni transportni sistemi - Sporočila prometnih in potovalnih informacij prek

kodiranih prometnih sporočil - 1. del: Kodirni protokol za radijski podatkovni
sistem - Prometni informacijski kanal (RDS-TMC), ki uporablja sistem ALERT-C
(ISO 14819-1:2021)

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 14819-1:2021)
Intelligente Transportsysteme - Verkehrs- und Reiseinformationen über

Verkehrsmeldungskodierung - Teil 1: Kodierungsprotokoll für den digitalen Radiokanal

für Verkehrsmeldungen (RDS-TMC) unter Nutzung von ALERT-C (ISO 14819-1:2021)

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

de messages sur le trafic - Partie 1: Protocole de codage pour le système de

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

TMC) avec ALERT-C (ISO 14819-1:2021)
Ta slovenski standard je istoveten z: EN ISO 14819-1:2021
ICS:
03.220.20 Cestni transport Road transport
35.240.60 Uporabniške rešitve IT v IT applications in transport
prometu
SIST EN ISO 14819-1:2021 en,fr,de

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

---------------------- Page: 1 ----------------------
SIST EN ISO 14819-1:2021
---------------------- Page: 2 ----------------------
SIST EN ISO 14819-1:2021
EN ISO 14819-1
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2021
EUROPÄISCHE NORM
ICS 03.220.20; 35.240.60 Supersedes EN ISO 14819-1:2013
English Version
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 14819-1:2021)

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

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

sur le trafic - Partie 1: Protocole de codage pour le - Teil 1: Kodierungsprotokoll für den digitalen

système de radiodiffusion de données - canal de Radiokanal für Verkehrsmeldungen (RDS-TMC) unter

messages d'informations sur le trafic (RDS-TMC) avec Nutzung von ALERT-C (ISO 14819-1:2021)

Alert-C (ISO 14819-1:2021)
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 14819-1:2021 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 14819-1:2021
EN ISO 14819-1:2021 (E)
Contents Page

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

---------------------- Page: 4 ----------------------
SIST EN ISO 14819-1:2021
EN ISO 14819-1:2021 (E)
European foreword

This document (EN ISO 14819-1:2021) 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 September 2021, and conflicting national standards

shall be withdrawn at the latest by September 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 14819-1:2013.

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 14819-1:2021 has been approved by CEN as EN ISO 14819-1:2021 without any

modification.
---------------------- Page: 5 ----------------------
SIST EN ISO 14819-1:2021
---------------------- Page: 6 ----------------------
SIST EN ISO 14819-1:2021
INTERNATIONAL ISO
STANDARD 14819-1
Third edition
2021-03
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
Systèmes de transport intelligents — Informations sur le trafic et les
déplacements via le codage de messages sur le trafic —
Partie 1: Protocole de codage pour le système de radiodiffusion de
données - canal de messages d'informations sur le trafic (RDS-TMC)
avec Alert-C
Reference number
ISO 14819-1:2021(E)
ISO 2021
---------------------- Page: 7 ----------------------
SIST EN ISO 14819-1:2021
ISO 14819-1:2021(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
---------------------- Page: 8 ----------------------
SIST EN ISO 14819-1:2021
ISO 14819-1:2021(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................vi

Introduction ..............................................................................................................................................................................................................................vii

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

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

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

3.1 Terms and definitions ....................................................................................................................................................................... 1

3.2 Abbreviated terms ............................................................................................................................................................................... 5

4 Application ................................................................................................................................................................................................................. 6

4.1 General ........................................................................................................................................................................................................... 6

4.2 Definition of the TMC "travel service"................................................................................................................................. 6

4.3 TMC virtual terminal ......... ................................................................................................................................................................. 7

4.4 Event-orientated end-user information messages .................................................................................................. 7

4.5 Strategic and tactical information .......................................................................................................................................... 7

4.6 Geographic relevance ........................................................................................................................................................................ 8

4.7 Transmitted message priority ................................................................................................................................................... 8

4.8 Event List...................................................................................................................................................................................................... 9

4.9 Future extensions ................................................................................................................................................................................. 9

5 Presentation .............................................................................................................................................................................................................. 9

5.1 General ........................................................................................................................................................................................................... 9

5.2 TMC virtual language......................................................................................................................................................................... 9

5.3 Message content .................................................................................................................................................................................10

5.3.1 General...................................................................................................................................................................................10

5.3.2 Event description (11 bits) ..................................................................................................................................10

5.3.3 Primary location (16 bits) ....................................................................................................................................10

5.3.4 Direction and extent (4 bits) ..............................................................................................................................11

5.3.5 Duration (3 bits)............................................................................................................................................................11

5.3.6 Diversion advice (1 bit) ...........................................................................................................................................13

5.4 Implicit information ........................................................................................................................................................................14

5.4.1 Road class and road number ..............................................................................................................................14

5.4.2 Road segment ..................................................................................................................................................................14

5.4.3 Area, region and country .......................................................................................................................................14

5.4.4 Pre-assigned diversion advice ...........................................................................................................................14

5.4.5 Urgency within the terminal ...............................................................................................................................14

5.4.6 Directionality ...................................................................................................................................................................15

5.4.7 Duration type ...................................................................................................................................................................15

5.4.8 Nature .....................................................................................................................................................................................15

5.4.9 Update class ......................................................................................................................................................................15

5.4.10 Quantifier type ................................................................................................................................................................15

5.5 Optional message content ..........................................................................................................................................................15

5.5.1 General...................................................................................................................................................................................15

5.5.2 Combination of additional information ....................................................................................................16

5.5.3 Control codes (label 1).............................................................................................................................................16

5.5.4 Length of route affected (label 2) ...................................................................................................................17

5.5.5 Speed limit (label 3) ...................................................................................................................................................17

5.5.6 Additional quantifiers (labels 4 and 5) ......................................................................................................17

5.5.7 Supplementary information (label 6) .........................................................................................................18

5.5.8 Start and stop times (labels 7 and 8) ..........................................................................................................18

5.5.9 Multi-event messages (label 9) ........................................................................................................................18

5.5.10 Detailed diversion instructions (label 10) ..............................................................................................19

5.5.11 Destinations (label 11) ............................................................................................................................................19

5.5.12 Precise location reference (label 12)...........................................................................................................19

5.5.13 Cross linkage to source of problem (label 13) ....................................................................................20

© ISO 2021 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 14819-1:2021
ISO 14819-1:2021(E)

5.5.14 Separator (label 14) ...................................................................................................................................................20

5.5.15 Other information as defined by sub-labels (label 15) ................................................................21

5.5.16 Reference to telephone services (label 15, sub-label 1-2) ........................................................21

6 Message management ..................................................................................................................................................................................24

6.1 General ........................................................................................................................................................................................................24

6.2 System messages ................................................................................................................................................................................25

6.2.1 General...................................................................................................................................................................................25

6.2.2 Location table ..................................................................................................................................................................25

6.2.3 Terminal requirements ...........................................................................................................................................25

6.2.4 Change of database numbers .............................................................................................................................26

6.3 Message repetition ...........................................................................................................................................................................26

6.4 Message updating ..............................................................................................................................................................................26

6.5 Message deletion ................................................................................................................................................................................27

6.5.1 General...................................................................................................................................................................................27

6.5.2 Message persistence ..................................................................................................................................................27

6.5.3 Detailed stop-time .......................................................................................................................................................28

6.5.4 Non-silent and silent cancellation messages ........................................................................................28

6.5.5 Null message.....................................................................................................................................................................28

6.6 Message presentation ....................................................................................................................................................................29

6.7 Out of area referencing .................................................................................................................................................................29

6.7.1 Structure of the INTER-ROAD concept ......................................................................................................29

6.7.2 INTER-ROAD messages ...........................................................................................................................................30

6.7.3 Updating and cancellation of INTER-ROAD messages .................................................................30

7 Transmission using RDS type 8A and type 3A groups ................................................................................................31

7.1 General ........................................................................................................................................................................................................31

7.2 Format of type 8A groups ...........................................................................................................................................................31

7.3 Group repetition .................................................................................................................................................................................31

7.4 Single-group user messages .....................................................................................................................................................32

7.5 System messages ................................................................................................................................................................................33

7.5.1 General...................................................................................................................................................................................33

7.5.2 System information ....................................................................................................................................................33

8 Method of encrypting an RDS-TMC service ............................................................................................................................36

8.1 General ........................................................................................................................................................................................................36

8.2 Summary of TMC data elements in type 3A groups .............................................................................................37

8.3 Summary of TMC data elements in type 8A groups .............................................................................................37

8.4 Principles of the Encryption and Conditional Access methodology ......................................................37

8.5 Encryption by the service provider ...................................................................................................................................38

8.6 Use of type 8A groups for RDS-TMC encryption .....................................................................................................38

8.7 Encryption Administration group .......................................................................................................................................39

8.7.1 General...................................................................................................................................................................................39

8.7.2 Service identifier (SID) ............................................................................................................................................39

8.7.3 Encryption identifier (ENCID) ..........................................................................................................................39

8.7.4 Location table number before encryption (LTNBE) .......................................................................40

8.7.5 Test Bits ................................................................................................................................................................................40

8.8 Encrypting location codes ..........................................................................................................................................................40

8.8.1 General...................................................................................................................................................................................40

8.8.2 Test mode ............................................................................................................................................................................41

8.8.3 Repetition rate ................................................................................................................................................................41

8.9 Access to decrypted services by a terminal ................................................................................................................42

8.10 ‘Activation’ of a terminal...............................................................................................................................................................42

8.10.1 General...................................................................................................................................................................................42

8.10.2 Serial number of terminal .....................................................................................................................................42

8.10.3 Access profile (ACP) ...................................................................................................................................................43

8.10.4 PIN code composition ........................................................................................................................................... ....43

8.10.5 Implementation rules for PIN codes ............................................................................................................43

8.11 Identifying an encrypted RDS-TMC service .................................................................................................................43

8.12 Decrypting location codes ..........................................................................................................................................................44

iv © ISO 2021 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 14819-1:2021
ISO 14819-1:2021(E)

8.13 Alternative encryption strategy ............................................................................................................................................45

9 Following an RDS-TMC service ............................................................................................................................................................45

9.1 General ........................................................................................................................................................................................................45

9.2 System information repetition rates .................................................................................................................................46

9.3 Tuning information ..........................................................................................................................................................................46

9.3.1 General...................................................................................................................................................................................46

9.3.2 Format of the Tuning Information .................................................................................................................46

9.3.3 Conditions for using tuning information .................................................................................................48

9.3.4 Repetition rate ................................................................................................................................................................49

9.4 Multi-group messages ......... ...........................................................................................................................................................49

9.4.1 General...................................................................................................................................................................................49

9.4.2 First group ..........................................................................................................................................................................50

9.4.3 Subsequent groups .....................................................................................................................................................51

9.5 Summary of X-bit usage in RDS-TMC type 8A groups ........................................................................................52

Bibliography .............................................................
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.