ISO 17572-3:2015

INTERNATIONAL ISO
STANDARD 17572-3
Second edition
2015-01-15
Intelligent transport systems (ITS) —
Location referencing for geographic
databases —
Part 3:
Dynamic location references
(dynamic profile)
Systèmes intelligents de transport (SIT) — Localisation pour bases de
données géographiques —
Partie 3: Localisations dynamiques (profil dynamique)
Reference number
©
ISO 2015
© ISO 2015
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ii © ISO 2015 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms and attribute codes . 4
4.1 Abbreviated terms . 4
4.2 Attribute codes . 5
5 Objectives and requirements for a location referencing method . 6
6 Conceptual data model for location referencing methods . 6
7 Specification of dynamic location references . 6
7.1 General specification . 6
7.2 Location referencing building blocks . 7
7.2.1 General. 7
7.2.2 Points . 7
7.2.3 Attributes . 8
7.2.4 Next-point relationship .15
7.2.5 Attribute type list .15
8 Encoding rules .15
8.1 General .15
8.2 General point representation and selection rules .21
8.3 Location reference core encoding rules .21
8.3.1 Location selection .21
8.3.2 Location reference core point selection .22
8.3.3 Core point selection — Location points.22
8.3.4 Core point selection — Intersection points .23
8.3.5 Core point selection — Routing points .25
8.3.6 Intersection point attributes .27
8.3.7 Routing point attributes .28
8.3.8 Location reference core encoding parameters .29
8.4 Location reference extension encoding rules .29
8.4.1 General.29
8.4.2 Location reference extension necessity rules .30
8.4.3 Location reference extension point selection rules .30
8.4.4 Location reference extension encoding parameters .31
8.5 Coding of point locations.32
8.6 Coding of area locations .32
8.6.1 Coding of explicit area .32
8.6.2 Coding of implicit area .34
9 Logical data format specification .37
9.1 General .37
9.2 Data model definition.37
9.2.1 General.37
9.2.2 General data model .38
9.2.3 Linear location data model .38
9.2.4 Implicit area data model .39
9.2.5 Explicit area data model .40
Annex A (informative) Dynamic location reference, TPEG2 logical structure .41
Annex B (normative) Dynamic location reference, TPEG2 binary representation .58
Annex C (normative) Dynamic location reference, TPEG2 XML representation .66
Annex D (informative) Coding guidelines for dynamic location references .73
Annex E (informative) Compressed data format specification .79
Bibliography .103
iv © ISO 2015 – All rights reserved

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
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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 on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT), see the following URL: Foreword — Supplementary information.
The committee responsible for this document is ISO/TC 204, Intelligent transport systems.
This second edition cancels and replaces the first edition (ISO 17572-3:2008), which has been technically
revised. It also incorporates Technical Corrigendum ISO 17572-3:2008/Cor1:2009.
ISO 17572 consists of the following parts, under the general title Intelligent transport systems (ITS) —
Location referencing for geographic databases:
— Part 1: General requirements and conceptual model
— Part 2: Pre-coded location references (pre-coded profile)
— Part 3: Dynamic location references (dynamic profile)
Introduction
A location reference (LR) is a unique identification of a geographic object. In a digital world, a real-
world geographic object can be represented by a feature in a geographic database. An example of a
commonly known location reference is a postal address of a house. Examples of object instances include
a particular exit ramp on a particular motorway, a road junction, or a hotel. For efficiency reasons,
location references are often coded. This is especially significant if the location reference is used to
define the location for information about various objects between different systems. For intelligent
transport systems (ITS), many different types of real-world objects will be addressed. Amongst these,
location referencing of the road network, or components thereof, is a particular focus.
Communication of a location reference for specific geographic phenomena, corresponding to objects in
geographic databases, in a standard, unambiguous manner is a vital part of an integrated ITS system,
in which different applications and sources of geographic data will be used. Location referencing
methods (LRMs, methods of referencing object instances) differ by applications, by the data model used
to create the database, or by the enforced object referencing imposed by the specific mapping system
used to create and store the database. A standard location referencing method allows for a common
and unambiguous identification of object instances representing the same geographic phenomena in
different geographic databases produced by different vendors, for varied applications, and operating on
multiple hardware/softw
...