ISO/TS 20452:2007

TECHNICAL ISO/TS
SPECIFICATION 20452
First edition
2007-06-15
Requirements and Logical Data Model for
a Physical Storage Format (PSF) and an
Application Program Interface (API) and
Logical Data Organization for PSF used in
Intelligent Transport Systems (ITS)
Database Technology
Exigences et modèle de données logiques pour un format de stockage
physique (PSF), une interface de programme d'application (API) et une
organisation de données logiques pour un PSF utilisé dans la
technologie de base de données des systèmes de transport intelligents
(ITS)
Reference number
©
ISO 2007
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ii © ISO 2007 – All rights reserved

Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 1
4 Symbols and abbreviated terms . 7
4.1 Abbreviations . 7
4.2 Syntax notation used in data model diagrams . 8
5 Application categories . 9
5.1 Positioning . 9
5.2 Route Planning. 11
5.3 Route Guidance . 15
5.4 Map Display . 17
5.5 Address Location. 21
5.6 Service and POI Information Access. 32
6 Logical Data Model . 37
6.1 Overall model . 37
6.2 Transportation Entities. 39
6.3 Address Location entities. 42
6.4 Service/POI entities . 43
6.5 Cartographic entities. 44
6.6 Dynamic Traffic Information entities . 46
7 Logical Data Organization . 47
7.1 Global architecture . 47
7.2 Detailed Road Data . 51
7.3 Detailed Background Data . 51
7.4 Map Display Data . 51
7.5 Route Planning data . 52
7.6 Address Location data . 52
7.7 Service Data . 52
7.8 Traffic Information . 53
7.9 Metadata . 53
Bibliography . 54

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
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established has the right to be represented on that committee. International organizations, governmental and
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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 20452 was prepared by Technical Committee ISO/TC 204, Intelligent transport systems.

iv © ISO 2007 – All rights reserved

Introduction
ISO/NP 14826, Physical Storage for TICS Database Technology, was introduced into ISO/TC 204 with the
objective of standardizing a physical storage format (PSF) for navigation map data and related information
stored on physical media used by in-vehicle navigation systems. The intent was to facilitate an interoperable
in-vehicle navigation market environment by developing a standard PSF that would enable navigation media
offered by different providers to be used by any navigation system and navigation systems made by any
developer to be able to read the same media.
There was widespread international participation in this effort. Many of the different companies within the
1)
different participating national delegations possessed their own respective formats that were commercially
available. It was decided early on that since none of these existing formats would be adopted wholesale as
the standard physical storage format, the functional requirements of these existing systems would be
submitted and consolidated into a universal set and organized into the major categories of application
functionality predominantly used by in-vehicle navigation systems.
This gathering of market-driven requirements was the first step of an agreed development process that would
proceed according to a top-down development approach. A sequential work plan was defined which included
a logical data model based on the requirements, followed by the development of a logical organization of the
data types used in the model. This logical data organization (LDO) would be used as a basis for the definition
of a physical data organization (PDO), which would be defined to a sufficient level of granularity to specify a
single standard PSF.
It took several years to develop and gain consensus on the requirements, the logical data model, and the
logical data organization. During the development there were several input documents submitted by various
national delegations. At the beginning of the development of the PDO it was decided to use a Japanese PDO
2)
input document as a framework for the PDO discussion.
Shortly after the PDO discussion began, the project ISO/NP 14826 expired and there was not sufficient
international support for resubmitting a new work item proposal to continue the work, nor was there consensus
that the PDO work could be finished within an acceptable time frame. Consequently, a standard PSF as
envisioned within the scope of the work item would not be realized.
However, the requirements, logical data model, and logical data organization documents developed in this
process reflect international consensus and still provide value for the navigation system market and other
emerging products and services which use navigation map data. Thus it was agreed to convert these
documents into a Technical Specification which could be used for future developments.
This Technical Specification can help developers of applications that use map databases to realize
efficiencies by providing guidelines on setting up an appropriate architecture for navigation systems. This
provides a potential benefit to the developer's ability to develop systems in a shorter timeframe, thereby
shortening time-to-market for products. Although this Technical Specification was originally developed for
navigation system applications, it may also facilitate other market development activities by providing insight
into solving common data modelling and organization issues in the fields of telematics and location-based
services.
1) These formats are identified in the Bibliography of this Technical Specification.
2) Kiwi Format Specification version 1.2.2 (see Bibliography).
TECHNICAL SPECIFICATION ISO/TS 20452:2007(E)

Requirements and Logical Data Model for a Physical Storage
Format (PSF) and an Application Program Interface (API) and
Logical Data Organization for PSF used in Intelligent Transport
Systems (ITS) Database Technology
1 Scope
This Technical Specification describes the functional requirements and Logical Data Model for PSF and API
and the Logical Data Organization for PSF that were completed under ISO/NP 14826. It does not specify a
Physical Data Organization.
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 14825, Intelligent transport systems — Geographic Data Files (GDF) — Overall data specification
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
Address Location
application category that deals with the task of expressing a real-world position in terms of the PSF data
representation
...