ISO 19237:2017

INTERNATIONAL ISO
STANDARD 19237
First edition
2017-12
Intelligent transport systems —
Pedestrian detection and collision
mitigation systems (PDCMS) —
Performance requirements and test
procedures
Systèmes intelligents de transport — Systèmes de détection des
piétons et de prévention des collisions (PDCMS) — Exigences de
performance et modes opératoires d'essai
Reference number
©
ISO 2017
© ISO 2017, Published in Switzerland
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ii © ISO 2017 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and abbreviated terms . 3
5 Requirements . 4
5.1 Minimum enabling capabilities . 4
5.2 Operating model — State transition diagram . 4
5.2.1 State functional descriptions. 4
5.3 Performance requirements . 6
5.3.1 General. 6
5.3.2 Operating speed. 6
5.3.3 Countermeasure requirements . 7
5.3.4 Driver controls and human interface . 8
5.4 Types of PDCMS . 8
6 Test procedures . 8
6.1 General requirements . 8
6.1.1 Pedestrian test target specification . 8
6.1.2 Driving surface. 8
6.1.3 Ambient air temperature . 8
6.1.4 Horizontal visibility . 8
6.1.5 Vehicle pre-conditioning . 9
6.1.6 Vehicle mass . 9
6.2 Test requirements for Type 1 systems . 9
6.2.1 Ambient illumination . 9
6.2.2 Test procedures. 9
6.2.3 Pass criteria . 9
6.3 Test requirements for Type 2 systems .11
6.3.1 Ambient illumination .11
6.3.2 Test setup .11
6.3.3 Illuminance measurement methods .12
6.3.4 Illuminance values.13
6.3.5 Test procedures.13
6.3.6 Pass criteria .14
Annex A (informative) .15
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.
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different types of ISO documents should be noted. This document was drafted in accordance with the
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URL: www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 204, Intelligent transport systems.
iv © ISO 2017 – All rights reserved

Introduction
The fatality and severe injury rates of traffic accidents involving pedestrians are significantly high,
resulting in the loss of many lives.
Pedestrian Detection and Collision Mitigation Systems (PDCMS) reduce the severity of pedestrian
collisions that cannot be avoided, and may reduce the likelihood of fatality. By a collision warning (CW)
and automatically activating EB, PDCMS assist in slowing a vehicle when a collision is likely.
Functional elements of PDCMS are shown in Figure 1.
Figure 1 — Pedestrian Detection and Collision Mitigation Systems (PDCMS) functional elements
System designers and other users of this document may apply it to stand-alone PDCMS or to the
integration of the PDCMS functions into other driving assistance and support systems.
INTERNATIONAL STANDARD ISO 19237:2017(E)
Intelligent transport systems — Pedestrian detection and
collision mitigation systems (PDCMS) — Performance
requirements and test procedures
1 Scope
This document specifies the concept of operation, minimum functionality, system requirements, system
interfaces, and test procedures for Pedestrian Detection and Collision Mitigation Systems (PDCMS). It
specifies the behaviours that are required for PDCMS, and the system test criteria necessary to verify
that a given implementation meets the requirements of this document. Implementation choices are left
to system designers wherever possible.
PDCMS reduce the severity of pedestrian collisions that cannot be avoided, and may reduce the likelihood
of fatality and severity of injury. PDCMS require information about range to pedestrians, motion of
pedestrians, motion of the subject vehicle (SV), driver commands and driver actions. PDCMS detect
pedestrians ahead of time, determine if detected pedestrians represent a hazardous condition, and warn
the driver if a hazard exists. PDCMS estimate if the driver has an adequate opportunity to respond to
the hazard. If there is inadequate time available for the driver to respond, and if appropriate criteria are
met, PDCMS determine that a collision is imminent. Based upon this assessment, PDCMS will activate
CWs and vehicle brakes to mitigate collision severity. This document, while not a collision avoidance
standard, does not preclude a manufacturer from implementing collision avoidance with PDCMS.
Systems that include other countermeasures such as evasive steering are not within the scope of this
document.
Responsibility for the safe operation of the vehicle remains with the driver.
This document applies to light duty passenger vehicles (see 3.6). It does not apply to other vehicle
categories such as heavy vehicles or motorcycles. PDCMS are not intended for off-road use.
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.
ISO 1176, Road vehicles — Masses — Vocabulary and codes
ISO 19206-2, Road vehicles — Test devices for target vehicles, vulnerable road users and other objects, for
1)
assessment of active safety functions — Part 2: Requirements for pedestrian targets
ISO 19476:2014, Characterization of the performance of illuminance meter and luminance meter
United Nations Economic and Social Council World Forum for Harmonization of Vehicle
Regulations. (WP.29) TRANS/WP.29/78/Rev.2
United Nations Economic and Social Council World Forum for Harmonization of Vehicle
Regulations. (WP.29) TRANS/WP.29/1045
No FMVSS 105; Hydraulic and electric brake systems
1) To be published.
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:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
collision warning
CW
warning system that alerts the driver of a potential collision with a pedestrian in the forward path of
the subject vehicle
3.2
driver override
driver initiated suppression of an EB or CW countermeasure
3.3
emergency braking
EB
PDCMS countermeasure that responds to the detection of an imminent pedestrian collision by
automatically activating braking to quickly reduce the relative velocity
3.4
heavy vehicle
any single vehicle or combination of vehicles define
...