ISO 17386:2023

INTERNATIONAL ISO
STANDARD 17386
Third edition
2023-05
Intelligent transport systems —
Manoeuvring aids for low-speed
operation (MALSO) — Performance
requirements and test procedures
Systèmes de transport intelligents — Aides à la conduite pour
manœuvre à vitesse réduite (MALSO) — Exigences de performance et
procédures d'essai
Reference number
© ISO 2023
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ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Classification . 4
5 Functional and performance requirements . 4
5.1 System activation . 4
5.1.1 Systems with manual activation . 4
5.1.2 Systems with automatic activation . . 5
5.2 Driver interface and information strategy . 5
5.2.1 General information presentation . 5
5.2.2 Audible information . 5
5.2.3 Visual information . 6
5.2.4 Combination of visual and audible information . 7
5.2.5 Duration of signalling . 7
5.3 Dynamic performance of object detection . 7
5.3.1 Relative velocity of objects . 7
5.3.2 Start-up detection delay. 7
5.3.3 Detection latency . 8
5.4 Monitoring range coverage . 8
5.4.1 Sections of the monitoring range . 8
5.4.2 Horizontal areas of relevance . 8
5.4.3 Rear horizontal area . 9
5.4.4 Front horizontal area . 10
5.4.5 Corner horizontal areas .12
5.4.6 Minimum coverage ratios . 13
5.4.7 Vertical areas of relevance . 13
5.5 Self-test capabilities and failure indication . 14
5.6 Operation with trailers . 14
5.6.1 Trailer hitch handling . 14
5.6.2 System operation with trailer . 15
6 Requirements and tests components .15
7 Operational test of obstacle detection .15
7.1 Test object . 15
7.1.1 Standard test object definition . 15
7.1.2 Ultrasonic-based systems . 15
7.1.3 Radar-based systems . 16
7.2 General ambient conditions . 16
7.3 Test procedure . 16
7.3.1 Test setup . 16
7.3.2 Test 1 — Coverage of horizontal areas of relevance . 17
7.3.3 Test 2 — Coverage of vertical areas of relevance. 17
Annex A (informative) Test methods .18
Bibliography .21
iii
Foreword
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www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 204, Intelligent transport systems.
This third edition cancels and replaces the second edition (ISO 17386:2010), which has been technically
revised.
The main changes are as follows:
— requirements updated according to state-of-the-art systems regarding detection characteristic;
— test method for detection latency added.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
Introduction
Today's aerodynamically-shaped vehicles often result in restricted rear and front visibility. Manoeuvring
Aids for Low Speed Operation (MALSO) enhance security and driver convenience during parking or
manoeuvring situations at very low speed, e.g. squeezing into small parking spaces or through narrow
passages. Drivers can avoid collisions with obstacles that cannot be seen but can be detected by the
system and they can make more effective use of limited parking space.
MALSO systems are detection devices with non-contact sensors which assist the driver during low-
speed manoeuvring. MALSO systems indicate to the driver the presence of front, rear or corner objects.
They are regarded as an aid to drivers for use at speeds of up to 0,5 m/s, and they do not relieve drivers
of their responsibility when driving the vehicle.
v
INTERNATIONAL STANDARD ISO 17386:2023(E)
Intelligent transport systems — Manoeuvring aids for low-
speed operation (MALSO) — Performance requirements
and test procedures
1 Scope
This document addresses light-duty vehicles, such as passenger cars, pick-up trucks, light vans and
sport utility vehicles (motorcycles excluded) equipped with Manoeuvring Aids for Low Speed Operation
(MALSO) systems. It specifies the minimum functionality requirements which the driver can generally
expect of the device, i.e. detection of and information on the presence of relevant obstacles within a
defined (short) detection range. It defines minimum requirements for failure indication as well as
performance test procedures; it includes rules for the general information strategy but does not restrict
the kind of information or display system.
MALSO systems use object-detection devices (sensors) for ranging in order to provide the driver with
information based on the distance to obstacles. Although sensing technology is not addressed in this
document, technology does affect the performance-test procedures set up in Clause 7. The current test
objects are defined based on systems using ultrasonic sensors, which reflect the most commonly used
technology at the time of publication. For other sensing technologies which will potentially emerge in
the future, these test objects shall be checked and changed if required.
Visibility-enhancement systems like video-camera aids without distance ranging and warning are not
covered by this document.
Reversing aids and obstacle-detection devices on heavy commercial vehicles are not addressed by this
document.
2 Normative references
The following docu
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