ISO 22733-1:2022

INTERNATIONAL ISO
STANDARD 22733-1
Second edition
2022-09
Road vehicles — Test method
to evaluate the performance of
autonomous emergency braking
systems —
Part 1:
Car-to-car
Véhicules routiers — Méthode d'essai pour évaluer la performance
des systèmes automatiques de freinage d'urgence —
Partie 1: Voiture à voiture
Reference number
© ISO 2022
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Published in Switzerland
ii
Contents Page
Foreword .v
Introduction . vi
1 S c op e . 1
2 Nor m at i ve r ef er enc e s . 1
3 Terms and definitions . 1
4 Va r i able s . 3
4.1 Reference system . 3
4 . 2 L at er a l of f s e t . 3
4.3 V ariables to be measured . 4
5 E quivalent vehicle target . 4
6 Measuring equipment and data processing . 4
6.1 General . 4
6 . 2 D e s c r ip t ion . 4
6 . 3 Tr a n s duc er i n s t a l l at ion . 5
6 .4 C a l ibr at ion . 5
6 . 5 Dat a pr o c e s s i n g. 5
7 Te s t c ond it ion s .5
7.1 G eneral . 5
7.2 G eneral data . 5
7. 3 Te s t t r ac k . 5
7.4 We at her c ond it ion s . 6
7. 5 Sur r ound i n g s . 6
7. 6 V U T . 6
7.6.1 G eneral vehicle condition . 6
7.6.2 A EB system settings . . 6
7.6.3 Deployable pedestrian protection systems . 7
7.6.4 Tyres . 7
7.6.5 Braking system . 7
7.6.6 Other influencing system . 7
7.6.7 Loading conditions of the vehicle . 8
8 Te s t pr o c e du r e .8
8 .1 Te s t pr ep a r at ion . 8
8.1.1  .
Brake conditioning . 8
8.1.2 Tyre conditioning . 8
8 . 2 Te s t s c en a r io s . 9
8 . 3 Te s t c onduc t . 10
8.4 T est execution . . 10
8 .4 .1 Sp ee d . 10
8.4.2 V alidity criteria . . 10
8.4.3 End of test conditions . . 10
8.4.4 D etermination of speed incremental steps . 11
9 D BS tests (optional) .11
10 Per f or m a nc e me t r ic s .11
10.1 M aximum speed of VUT at which collision is avoided: V . 11
VUT
10.2 M ean longitudinal acceleration of the VUT: A . 11
VUTmean
10.3 M aximum longitudinal acceleration of the VUT with DBS: A . 11
VUTmax
10.4 A verage increase rate of longitudinal acceleration of VUT with DBS: A .12
VUTincrease rate
10.5 I mpact speed of VUT at which collision first occurs: V .12
impact
10.6 A ctivation time of AEBS: T . 12
AEB
iii
10.7 A ctivation time of FCW: T . 12
FCW
10.8 M aximum yaw rate of the VUT: ψψ .12
VUT
10.9 L ateral offset of the VUT: Y . 12
VUT
10.10 M aximum steering wheel velocity of VUT: Ω .12
VUT
Annex A (informative) Brake application procedure .13
Annex B (informative) Test report.15
Bibliography .18
iv
Foreword
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This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 33,
Vehicle dynamics and chassis components.
This second edition cancels and replaces the first edition (ISO 22733-1:2021), which has been technically
revised.
The main changes are as follows:
— normative reference to ISO 19206-3 added in several clauses;
— editorial improvements.
A list of all parts in the ISO 22733 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national
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