Traffic and Travel Information (TTI) - TTI via Transport Protocol Expert Group (TPEG) data-streams - Part 6: Location referencing applications (ISO/TS 18234-6:2006)

This Technical Specification establishes the method of location referencing used by TPEG applications such as TPEG-RTM or TPEG-PTI. TPEG applications are specified to contain all the information required by a client TPEG decoder (i.e. both location referencing and event information), to present all the information intended for the end-user when it was originated by the service provider. The term "application" is used in TPEG specifications to describe specific applications, which are at the highest layer of the ISO/OSI protocol stack (ISO/IEC 7498-1). Each TPEG application (e.g. TPEG-RTM) is assigned a unique number that is called the Application IDentification (AID). In this respect TPEG-Loc is not an application, but it is an essential constituent part of an application. Location referencing requires a service provider to give an impression or image to the human end-user of where an event has taken place. This cannot be done easily because the human end-user may or may not be familiar with the location. TPEG-Loc has the added challenge of attempting to be as language independent as possible. This is achieved by the use of TPEG-Loc tables (essentially word oriented data object dictionaries). TPEG-Loc also provides location data in a machine-readable form that allows a "thick" client such as a navigation system to map-match, on-the-fly, to locate the event being described onto a digital map display.

Reise- und Verkehrsinformation (TTI) ) - TTI über Datenströme der Transportprotokoll Expertengruppe (TPEG) - Teil 6: Ortskodierung für Anwendungen (TPEG-Loc) (ISO/TS 18234-6:2006)

Informations sur le trafic et le tourisme (TTI) - Messages TTI via les flux de données du groupe d'experts du protocole de transport (TPEG) - Partie 6: Applications de référence de localisation (ISO/TS 18234-6:2006)

Prometne in potovalne informacije (TTI) – TTI preko toka podatkov ekspertne skupine za prometne in potovalne protokole (TPEG) – 6. del: Aplikacije za navajanje lokacije (ISO/TS 18234-6:2006)

General Information

Status
Published
Publication Date
30-Jun-2006
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Jul-2006
Due Date
01-Jul-2006
Completion Date
01-Jul-2006

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SLOVENSKI STANDARD
SIST-TS CEN ISO/TS 18234-6:2006
01-julij-2006
Prometne in potovalne informacije (TTI) – TTI preko toka podatkov ekspertne
skupine za prometne in potovalne protokole (TPEG) – 6. del: Aplikacije za
navajanje lokacije (ISO/TS 18234-6:2006)
Traffic and Travel Information (TTI) - TTI via Transport Protocol Expert Group (TPEG)
data-streams - Part 6: Location referencing applications (ISO/TS 18234-6:2006)
Reise- und Verkehrsinformation (TTI) ) - TTI über Datenströme der Transportprotokoll
Expertengruppe (TPEG) - Teil 6: Ortskodierung für Anwendungen (TPEG-Loc) (ISO/TS
18234-6:2006)
Informations sur le trafic et le tourisme (TTI) - Messages TTI via les flux de données du
groupe d'experts du protocole de transport (TPEG) - Partie 6: Applications de référence
de localisation (ISO/TS 18234-6:2006)
Ta slovenski standard je istoveten z: CEN ISO/TS 18234-6:2006
ICS:
03.220.01
35.240.60
SIST-TS CEN ISO/TS 18234-6:2006 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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TECHNICAL SPECIFICATION CEN ISO/TS 18234-6

SPÉCIFICATION TECHNIQUE

TECHNISCHE SPEZIFIKATION June 2006
ICS 35.240.60; 03.220.01
English Version
Traffic and Travel Information (TTI) - TTI via Transport Protocol
Expert Group (TPEG) data-streams - Part 6: Location
referencing applications (ISO/TS 18234-6:2006)
Informations sur le trafic et le tourisme (TTI) - Messages Reise- und Verkehrsinformation (TTI) ) - TTI über
TTI via les flux de données du groupe d'experts du Datenströme der Transportprotokoll Expertengruppe
protocole de transport (TPEG) - Partie 6: Applications de (TPEG) - Teil 6: Ortskodierung für Anwendungen (TPEG-
référence de localisation (ISO/TS 18234-6:2006) Loc) (ISO/TS 18234-6:2006)
This Technical Specification (CEN/TS) was approved by CEN on 28 September 2004 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available
promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)
until the final decision about the possible conversion of the CEN/TS into an EN is reached.

CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.






EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN ISO/TS 18234-6:2006 E
worldwide for CEN national Members.

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CEN ISO/TS 18234-6:2006 (E)





Foreword


This document (CEN ISO/TS 18234-6:2006) has been prepared by Technical Committee
CEN/TC 278 "Road transport and traffic telematics", the secretariat of which is held by NEN, in
collaboration with Technical Committee ISO/TC 204 "Transport information and control
systems".

According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to announce this CEN Technical Specification: Austria,
Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United
Kingdom.
2

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TECHNICAL ISO/TS
SPECIFICATION 18234-6
First edition
2006-06-01

Traffic and Travel Information (TTI) — TTI
via Transport Protocol Expert Group
(TPEG) data-streams —
Part 6:
Location referencing applications
Informations sur le trafic et le tourisme (TTI) — Messages TTI via les
flux de données du groupe d'experts du protocole de transport
(TPEG) —
Partie 6: Applications de référence de localisation




Reference number
ISO/TS 18234-6:2006(E)
©
ISO 2006

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ISO/TS 18234-6:2006(E)
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ii © ISO 2006 – All rights reserved

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ISO/TS 18234-6:2006(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 2
4 Abbreviations . 4
5 Location container. 5
5.1 Location container concepts. 6
5.2 Structure of TPEG-Loc . 20
5.3 Coding of location container . 23
5.4 TPEG-Loc application primitives . 39
6 TPEG-Loc coding for compatibility with ILOC method. 70
6.1 TPEG location referencing within ‘location co-ordinates’ – Encoding and decoding . 70
6.2 TPEG-location encoder rules . 71
6.3 TPEG-location decoder rules . 74
Bibliography . 76

© ISO 2006 – All rights reserved iii

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ISO/TS 18234-6:2006(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
In other circumstances, particularly when there is an urgent market requirement for such documents, a
technical committee may decide to publish other types of normative document:
— an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical experts in
an ISO working group and is accepted for publication if it is approved by more than 50 % of the members
of the parent committee casting a vote;
— an ISO Technical Specification (ISO/TS) represents an agreement between the members of a technical
committee and is accepted for publication if it is approved by 2/3 of the members of the committee casting
a vote.
An ISO/PAS or ISO/TS is reviewed after three years in order to decide whether it will be confirmed for a
further three years, revised to become an International Standard, or withdrawn. If the ISO/PAS or ISO/TS is
confirmed, it is reviewed again after a further three years, at which time it must either be transformed into an
International Standard or be withdrawn.
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.
ISO/TS 18234-6 was prepared by Technical Committee ISO/TC 204, Intelligent transport systems.
ISO/TS 18234 consists of the following parts, under the general title Traffic and Travel Information (TTI) — TTI
via Transport Protocol Expert Group (TPEG) data-streams:
⎯ Part 1: Introduction, numbering and versions
⎯ Part 2: Syntax, Semantics and Framing Structure (SSF)
⎯ Part 3: Service and Network Information (SNI) application
⎯ Part 4: Road Traffic Message (RTM) application
⎯ Part 5: Public Transport Information (PTI) application
⎯ Part 6: Location referencing applications


iv © ISO 2006 – All rights reserved

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ISO/TS 18234-6:2006(E)
Introduction
The TPEG technology uses a byte-oriented stream format, which may be carried on almost any digital bearer
with an appropriate adaptation layer. TPEG-messages are delivered from service providers to end-users, and
are used to transfer information from the database of a service provider to an end-user’s equipment.
The TPEG-Loc methodology has been developed to provide a unified location referencing system for all
TPEG applications that require such referencing systems. This CEN ISO Technical Specification describes
the TPEG-Loc application in detail.
TPEG-Loc is designed to offer service providers and end-users several large and significant advantages over
previous location based services. TPEG-Loc forms the basis of location referencing for any TPEG application
that may be specified.
It is very important to remember the original TPEG objectives, which ensure that the TPEG-Loc is designed to
meet all needs. It is flexible in use, from both a service provision and end-user viewpoint. TPEG-Loc offers
choices for service providers to provide simple single-application services through to multi-application services
using the same location referencing method. TPEG-Loc offers filtering choices for end-users to provide wide
or narrowly focussed information, both urban and inter-urban and for single or multi-modal journeys. TPEG-
Loc provides for both large networked service providers and small single area service providers and allows a
full range of end-user products to be developed, from thick clients such as navigation systems to thin clients
such as small hand held travel assistants.
The Broadcast Management Committee of the European Broadcast Union (EBU) established the B/TPEG
project group in autumn 1997 with the mandate to develop, as soon as possible, a new protocol for
broadcasting traffic and travel-related information in the multimedia environment. The TPEG technology, its
applications and service features are designed to enable travel-related messages to be coded, decoded,
filtered and understood by humans (visually and/or audibly in the user’s language) and by agent systems.
One year later in December 1998, the B/TPEG group produced its first public specifications. Two documents
were released. Part 2 (TPEG-SSF, CEN ISO/TS 18234-2) described the Syntax, Semantics and Framing
structure, which will be used for all TPEG applications. Part 4 (TPEG-RTM, CEN ISO/TS 18234-4) described
the first application, for Road Traffic Messages.
CEN /C 278/WG 4, in conjunction with ISO/TC 204/WG 10, established a project group comprising the
members of B/TPEG and they have continued the work concurrently since March 1999. Since then two further
parts have been developed to make the initial complete set of four parts, enabling the implementation of a
consistent service. Part 3 (TPEG-SNI, CEN ISO/TS 18234-3) describes the Service and Network Information
Application, which is likely to be used by all service implementations to ensure appropriate referencing from
one service source to another. Part 1 (TPEG-INV, CEN ISO/TS 18234-1), completes the work, by describing
the other parts and their relationship; it also contains the application IDs used within the other parts.
In April 2000, the B/TPEG group released revised Parts 1 to 4, all four parts having been reviewed and
updated in the light of initial implementation results. Thus a consistent suite of specifications, ready for wide
scale implementation, was submitted to the CEN/ISO commenting process.
In November 2001, after extensive response to the comments received and from many internally suggested
improvements, all four parts were completed for the next stage: the Parallel Formal Vote in CEN and ISO. But
a major step forward has been to develop the so-called TPEG-Loc location referencing method, which
enables both map-based TPEG-decoders and non map-based ones to deliver either map-based location
referencing or human readable information. Part 6 (TPEG-Loc, CEN ISO/TS 18234-6, this document) is now a
separate specification and is used in association with the other parts of CEN ISO/TS 18234 to provide
comprehensive location referencing. Additionally Part 5, the Public Transport Information Application (TPEG-
PTI, CEN ISO/TS 18234-5), has been developed and been through the commenting process.
© ISO 2006 – All rights reserved v

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ISO/TS 18234-6:2006(E)
This Technical Specification, CEN ISO/TS 18234-6, describes the data structure, the encoding and decoding
of “TPEG-Loc”. This document has been prepared by CEN/TC 278 Road Transport and Traffic Telematics in
co-operation with ISO/TC 204, Intelligent Transport Systems.
During the development of the TPEG technology a number of versions have been documented and various
trials implemented using various versions of the specifications. At the time of the publication of this Technical
Specification, all parts are fully inter-workable and no specific dependencies exist. This Technical
Specification has the technical version number TPEG-Loc_3.0/001.


vi © ISO 2006 – All rights reserved

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TECHNICAL SPECIFICATION ISO/TS 18234-6:2006(E)

Traffic and Travel Information (TTI) — TTI via Transport
Protocol Expert Group (TPEG) data-streams —
Part 6:
Location referencing applications
1 Scope
This Technical Specification establishes the method of location referencing used by TPEG applications such
as TPEG-RTM or TPEG-PTI.
TPEG applications are specified to contain all the information required by a client TPEG decoder (i.e. both
location referencing and event information), to present all the information intended for the end-user when it
was originated by the service provider.
The term “application” is used in TPEG specifications to describe specific applications, which are at the
highest layer of the ISO/OSI protocol stack (ISO/IEC 7498-1). Each TPEG application (e.g. TPEG-RTM) is
assigned a unique number that is called the Application IDentification (AID). In this respect TPEG-Loc is not
an application, but it is an essential constituent part of an application.
Location referencing requires a service provider to give an impression or image to the human end-user of
where an event has taken place. This cannot be done easily because the human end-user may or may not be
familiar with the location. TPEG-Loc has the added challenge of attempting to be as language independent as
possible. This is achieved by the use of TPEG-Loc tables (essentially word oriented data object dictionaries).
TPEG-Loc also provides location data in a machine-readable form that allows a “thick” client such as a
navigation system to map-match, on-the-fly, to locate the event being described onto a digital map display.
NOTE Explicit backwards compatibility with the RDS-TMC location referencing method (EN ISO 14819-3) has NOT
been attempted, because RDS-TMC locations are finite in number and must be predetermined. TPEG technology does
not suffer from this restriction.
2 Normative references
The following referenced documents are indispensable for the application 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/TS 18234-1, Traffic and Travel Information (TTI) — TTI via Transport Protocol Expert Group (TPEG)
data-streams — Part 1: Introduction, Numbering and Versions
ISO/TS 18234-2, Traffic and Travel Information (TTI) — TTI via Transport Protocol Expert Group (TPEG)
data-streams — Part 2: Syntax, Semantics and Framing Structure (SSF)
ISO/TS 18234-3, Traffic and Travel Information (TTI) — TTI via Transport Protocol Expert Group (TPEG)
data-streams — Part 3: Service and Network Information (SNI) Application
© ISO 2006 – All rights reserved 1

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ISO/TS 18234-6:2006(E)
ISO/TS 18234-4, Traffic and Travel Information (TTI) – TTI via Transport Protocol Expert Group (TPEG) data-
streams — Part 4: Road Traffic Message (RTM) application
ISO/TS 18234-5, Traffic and Travel Information (TTI) — TTI via Transport Protocol Expert Group (TPEG)
data-streams — Part 5: Public Transport Information Application
ISO/IEC 7498-1, Information technology — Open Systems Interconnection — Basic Reference Model: The
Basic Model
3 Terms and definitions
For the purposes of this Technical Specification, the following terms and definitions apply.
NOTE 1 TPEG-Loc is completely focussed on location references for TPEG applications, which are delivering
messages to end-users, so for this key operational reason some definitions have a different meaning from that found in
other location reference systems.
NOTE 2 Digital map based systems, either on the message generation side or the client end-user side tend to be
based upon road mapping rather than, for example, rail track mapping, therefore throughout this specification there is a
tendency to use roads as examples. However roads are not necessarily implied, so the use and context of an element
must be clarified and this is declared in the coding in 5.3.1.
3.1
additional location descriptions
all information needed to filter, select and process a location in only text-based systems. Information
referenced through hierarchically structured text
3.2
connected point
point where several intersection points or non-linked points, together, make up one connected location. Also
the connected points are listed within it
3.3
framed point
a Framed point may be used to describe a point on a network such as a road network or rail network, where
the location is not likely to be well known or is a point without a predefined name. The two points either side
are used to frame the location with known points
3.4
height
in TPEG-Loc, height is used to describe a point in the vertical plane, relative to the height descriptor as shown
in TPEG Table loc04. Height consists of a numerical value, in metres, and descriptor
3.5
intersection point
Point at the intersection of two roads. The given co-ordinate is accompanied by up to three road descriptors
to match it exactly on the map
3.6
large area
an area with a large radius of more than one kilometre. The longitude/latitude co-ordinate pair used, does not
need to be matched exactly to a road or other object on the map
3.7
location container
in TPEG-Loc, a location container is a concept applied to the location referencing elements, to show how they
are grouped together. The TPEG-Loc container comprises a default language code, a location co-ordinates
container and an additional location descriptions container
2 © ISO 2006 – All rights reserved

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ISO/TS 18234-6:2006(E)
3.8
location co-ordinates
in TPEG-Loc, the location co-ordinates container includes information needed to identify a location exactly in
map-based systems and in many cases also in text-based systems. Information includes WGS 84 co-ordinate
pair and descriptive information
3.9
location referencing
method for referencing locations to facilitate the exchange of location related information between different
systems
3.10
location type
in TPEG-Loc, a location type describes the structure of location referencing data as defined in TPEG Table
loc01
3.11
message
collection of coherent information sent through an information channel. Describes an event or a collection of
related events, or status information and includes message management information
3.12
network description
network description describes links in networks. It is an element of the additional location descriptions
container
3.13
nodal area
area with a small radius, e.g. less than one kilometre. The given co-ordinate should be accompanied by one
or more descriptors to match it exactly on a map
3.14
node description
node description describes single points or complex nodes, which are part of a network. It is an element of
the additional location descriptions container
3.15
non-linked point
Point that cannot be matched exactly with the road network on a map. Road descriptors therefore do not
accompany the point co-ordinate
3.16
position
position defines where an event has taken place in relation to the road: e.g. driving lane 1, hard shoulder,
central reservation, etc. The driving lanes are numbered according to the usual local practice, i.e. driving
Lane 1 is the lane nearest to the hard shoulder. In countries which drive on the left, driving lanes are hence
numbered from left-to-right, and in countries driving on the right, from right-to-left
NOTE Position is an event element and NOT a location reference element.
3.17
radius of expansion
in TPEG-Loc, a radius of expansion is described by a circle of a certain radius value around a fixed point
3.18
segment
segment marked by two co-ordinates. The direction of the segment is default from first co-ordinate to second
co-ordinate. The direction field can change this. Both co-ordinates are accompanied by up to three road
descriptors to match them exactly on the map
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ISO/TS 18234-6:2006(E)
3.19
TPEG-Loc definitions
see section 5 for further explanations
3.20
WGS 84 usage
in TPEG-Loc, latitude and longitude are the only two elements used from the WGS 84 specification (see
bibliography)
4 Abbreviations
For the purposes of this Technical Specification, the following abbreviations apply.
4.1
BPN
Broadcast, Production and Networks (an EBU document publishing number system)
4.2
B/TPEG
Broadcast/TPEG (the EBU project group name for the specification drafting group)
4.3
CEN
Comité Européen de Normalisation
4.4
EBU
European Broadcasting Union
4.5
IC
Inter City (normally railway and bus routes)
4.6
ILOC
Intersection location
4.7
IPR
Intellectual Property Right(s)
4.8
ISO
International Organization for Standardization
4.9
OSI
Open Systems Interconnection
4.10
PTI
Public Transport Information (see CEN ISO/TS 18234-5)
4.11
RFU
Reserved for Future Use (not necessarily abbreviated)
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ISO/TS 18234-6:2006(E)
4.12
RTM
Road Transport Message (see CEN ISO/TS 18234-4)
4.13
TPEG
Transport Protocol Experts Group
4.14
TPEG-ilc
Descriptor formed according to TPEG-Loc rules
4.15
TTI
Traffic and Travel Information
4.16
WGS 84
World Geodetic System 1984
5 Location container
Most TPEG applications are designed to deliver TPEG-messages, which consist of three high level containers,
each with one or more elements. These containers are for message management, event information and
location referencing information. Note some special application messages do NOT include a TPEG-Loc
container, such as a cancellation message. It should also be noted that each container does not necessarily
have all possible lower level elements included.
Figure 1 shows the structure likely to be used, for example, when a TPEG-RTM (CEN ISO/TS 18234-4)
application message is generated to describe a road event and location references need to be given to the
end-user.

Figure 1 — The TPEG-message container and the three lower level containers
The main purpose of TPEG-Loc is to provide both human understandable and machine-readable elements to
any client TPEG decoder. It may be a ‘thin’ client only able to convey limited location referencing information
to the end-user or it may be a ‘thick’ client using a considerable number of elements and using considerable
processing power to filter the information for complex display to an end-user.
The TPEG-Loc concept combines two aspects of location references: both machine-readable and human
understandable, are delivered together. Within TPEG-Loc, there is a super-set of the so-called intersection
© ISO 2006 – All rights reserved 5

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ISO/TS 18234-6:2006(E)
1)
location, ILOC method , which may be used in a terminal client to map match on the fly to an installed digital
map regardless of exact compatibility with the digital map being used by a service provider. Additionally, the
TPEG-Loc super set of ILOC allows a human readable description to be easily decoded and displayed for an
end-user. The rules for this method, within TPEG-Loc, are given in Section 6.
The TPEG-location container shown in Figure 2 provides for extensive location descriptions, which shall be
matched by the service provider to local signposts to allow the human user to orient the received information
with local visual information.

Figure 2 — The TPEG-location container concept
TPEG applications are designed to be language independent, thus a default language code is included within
the TPEG-Loc container to determine an overall language for the descriptive elements of the TPEG-Loc
information. Further element-related language codes may be used to describe, for example, location names
having more than one language description (e.g. Brussels and Bruxelles or Casnewydd and Newport).
It is important to note that the location co-ordinates container mixes location co-ordinates and human readable
description elements together to achieve the mix of both machine and human readable aspects. Whereas the
additional location descriptions container is designed to facilitate human readable aspects alone, by providing
extended descriptions that are essentially designed for human readability.
5.1 Location container concepts
The TPEG-Loc concept is easily described by the use of diagrams in this section, before more technical
descriptions are given in later sections.
These diagrams are intended to provide a first appreciation of the structure, before going onto the coding
architecture and finally coding detail.
The text in the boxes represents the name of the coding element and corresponds to the coding architecture
de
...

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