ISO 17361:2017 高度道路交通システム—車線逸脱警報システム—性能要件とテスト手順 | ページ 2

Foreword

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The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, 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, 2 (see www.iso.org/directives ).

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

This second edition cancels and replaces the first edition (ISO 17361:2007), of which it constitutes a minor revision with the following modifications:

• Clause 2 has been updated;
• Annex A has been deleted;
• reference to Annex A has been changed to ISO 11270 in 3.2;
• inequality signs have been updated to Unicode.

Introduction

Lane departure warning systems (LDWSs) are based on fundamental traffic rules. The main focus of an LDWS is to help the driver keep the vehicle in the lane on highways and highway-like roads. Accordingly, a warning is issued to alert the driver in case of lane departure caused by, for example, inattention. LDWSs are not intended to issue warnings with respect to collisions with other vehicles or to control vehicle motions.

1 Scope

This document specifies the definition of the system, classification, functions, human-machine interface (HMI) and test methods for lane departure warning systems. These are in-vehicle systems that can warn the driver of a lane departure on highways and highway-like roads. The subject system, which may utilize optical, electromagnetic, GPS or other sensor technologies, issues a warning consistent with the visible lane markings. The issuance of warnings at roadway sections having temporary or irregular lane markings (such as roadwork zones) is not within the scope of this document. This document applies to passenger cars, commercial vehicles and buses. The system will not take any automatic action to prevent possible lane departures. Responsibility for the safe operation of the vehicle remains with the driver.

2 Normative references

There are no normative references in this document.

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:

3.25

visibility

distance at which the illuminance of a non-diffusive beam of white light with a colour temperature of 2 700 K is decreased to 5 % of its original light source illuminance

Figure 1 — Concept of warning thresholds and warning threshold placement zones

Key

1	lane boundary (see 3.4)
2	warning threshold placement zone (see 3.12)
3	earliest warning line (see 3.16)
4	latest warning line (see 3.17)
5	no warning zone (see 3.18)
6	warning threshold (for reference only) (see 3.11)

Figure 2 — Warning issue definitions

Key

1	lane boundary (see 3.4)
2	lane departure (see 3.7)
3	warning threshold (see 3.11)
4	earliest warning line (see 3.16)
5	latest warning line (see 3.17)
a	When warning condition is fulfilled here and there is no suppression request, a lane departure warning is issued.

Bibliography