ISO 20524-2:2020 高度道路交通システム—地理データファイル（GDF）GDF5.1 —パート2：自動運転システム、協調ITS、およびマルチモーダル輸送で使用される地図データ | ページ 2

Foreword

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This document was prepared by Technical Committee ISO/TC 204, Intelligent transport systems.

This first edition cancels and replaces ISO 14825:2011, which has been technically revised.

The main changes compared to the previous edition are as follows:

• this document is newly dedicated to automated driving systems, Cooperative ITS and multi-modal transport.
• A list of all parts in the ISO 20524 series can be found on the ISO website.

Introduction

GDF5.0 (ISO 14825) defines the map database exchange format for ITS. Its primary application is in car navigation systems and it assumes the provision of the map database by a single provider. However, ITS applications have been expanding to Cooperative ITS and automated driving systems through the recent progress of technology. In addition, there is demand for capabilities such as the accommodation of map databases from multiple providers and cooperation with externally connecting databases, such as Transmodel (EN 12896-1 and EN 12896-2).

Given this environment, ISO 14296 was published in February 2016 as an extension of map database specifications for applications of Cooperative ITS. However, GDF5.0 (ISO 14825) does not define some elements used in this document and automated driving systems require additional elements based on their unique application requirements. Furthermore, because GDF5.0 (ISO 14825) does not define a method to connect with external databases, the formulation of GDF5.1 (the ISO 20524 series) has become indispensable.

On revising GDF, the changes of conventional GDF are applied in GDF5.1 Part 1 (ISO 20524-1). The addition of a concept, a data model and specifications to satisfy new requirements applies to GDF5.1 Part 2 (this document). The new GDF document (the ISO 20524 series) is accordingly composed of two separate volumes: Part 1(ISO 20524-1) and Part 2 (this document).

1 Scope

This document specifies the conceptual and logical data model in addition to the physical encoding formats for geographic databases for Intelligent Transport Systems (ITS) applications and services. This document includes a specification of potential contents of such databases (data dictionaries for Features, Attributes and Relationships), a specification of how these contents are to be represented, and how relevant information about the database itself can be specified (metadata). This document further defines map data used in automated driving systems, Cooperative-ITS, and Multi-modal transport.

The focus of this document is firstly on emerging ITS applications and services, such as Cooperative-ITS and automated driving systems, and it emphasizes road, lane and relevant information on road and lane. However, ITS applications and services also require other information in addition to road and road-related information, which are provided as external databases to connect with GDF and to complement each other. Highly defined public transport databases, for instance, are indispensable in multi-modal transport applications and services in particular. Thus, this document focuses secondly on an expansion of the specification to connect with externally existing databases. It is particularly designed to connect a Transmodel (EN 12896-1 and EN 12896-2) conformant public transport database.

Typical ITS applications and services targeted by this document are in-vehicle or portable navigation systems, traffic management centres, or services linked with road management systems, including public transport systems.

The conceptual data model specified here has a broader focus than ITS applications and services. It is application independent, allowing for future harmonization of this model with other geographic database standards.

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.

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

Bibliography