ISO 21717:2018 高度道路交通システム—部分的に自動化された車線内運転システム（PADS）—性能要件とテスト手順 | ページ 2

Foreword

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

Introduction

PADS is fundamentally intended to provide partially automated driving by longitudinal and lateral control of equipped vehicles while travelling on roads where non-motorized vehicles and pedestrians are prohibited. Free-flowing as well as congested traffic conditions could be addressed by PADS. The functionality of the longitudinal control is standardized in accordance with ISO 15622. The intention of the lateral control is to keep the vehicle in the lane and not to perform lane changes.

The main system function of a Partially Automated In-Lane Driving System (PADS) is to support the driver in keeping the vehicle within the current lane and to keep the vehicle speed below a set maximum or to control vehicle speed adaptively to a forward vehicle by using information about:

• a) distance to forward vehicles,
• b) the motion of the subject (PADS equipped) vehicle,
• c) the position of the subject vehicle within the lane, and
• d) driver commands (see Figure 1).

Based upon the information acquired, PADS sends commands to actuators that carry out its longitudinal and lateral control strategy, and sends status information to the driver.

The goal of PADS is partial automation of longitudinal and lateral vehicle control to reduce drivers’ workload.

This document may be used as a system level standard by other standards, which extend the PADS standard to a more detailed standard, e.g. for specific detection and ranging sensor concepts or higher levels of functionality. Specific requirements for the detection and ranging sensor function and performance or communication links for co-operative solutions are not considered in this document.

1 Scope

This document contains the basic control strategy, minimum functionality requirements, basic driver interface elements, minimum requirements for diagnostics and reaction to failure, and performance test procedures for Partially Automated In-Lane Driving Systems (PADS).

This document is applicable to passenger cars, commercial vehicles and buses. It is not applicable to automated driving systems of level 3 or higher (as defined in SAE J3016:2016).

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