ISO/PAS 19486:2025
(Main)Intelligent transport systems — Acceleration control for pedal error (ACPE) — Performance requirements and test procedures
Intelligent transport systems — Acceleration control for pedal error (ACPE) — Performance requirements and test procedures
This document specifies the functional requirements and test procedures for an acceleration control for pedal error (ACPE) system. This document applies to the systems installed in light vehicles (category M1 and N1)[2] and it does not apply to those installed in large vehicles or motorcycles.
Systèmes de transport intelligents — Contrôle de l'accélération en cas d'erreur de pédale (ACPE) — Exigences de performance et procédures d'essai
General Information
Standards Content (Sample)
Publicly
Available
Specification
ISO/PAS 19486
First edition
Intelligent transport systems —
2025-04
Acceleration control for pedal
error (ACPE) — Performance
requirements and test procedures
Systèmes de transport intelligents — Contrôle de l'accélération
en cas d'erreur de pédale (ACPE) — Exigences de performance et
procédures d'essai
Reference number
© ISO 2025
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ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 1
4.1 Basic requirements .1
4.2 State transition .2
4.2.1 Definitions of states .2
4.2.2 Transition conditions .2
4.3 Activation requirements .3
4.3.1 General .3
4.3.2 Activating conditions .3
4.3.3 Reducing unnecessary system activation.4
4.4 Functional requirements . .4
4.4.1 Suppression function .4
4.4.2 HMI (human machine interface) .5
5 Test procedures . 5
5.1 Test environment conditions .5
5.1.1 Driving surface .5
5.1.2 Noise .5
5.1.3 Ambient conditions .5
5.2 Collision speed measurement when the system is activated.5
5.2.1 General .5
5.2.2 Target setting .5
5.2.3 Test driving .5
5.3 Collision speed measurement when the system is inactive .6
5.4 Pass criteria.7
Annex A (informative) Relationship between age and pedal error accidents . 8
Annex B (informative) Manner in which the accelerator is pressed .12
Bibliography .13
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
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This document was prepared by Technical Committee ISO/TC 204, Intelligent transport systems.
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iv
Introduction
In recent years, accidents caused by operating errors have become an increasing problem. “Pedal errors” are
one of the causes that often lead to major accidents. A typical "pedal error" case is when a driver accidentally
presses the accelerator pedal as hard and deeply as a brake pedal when braking hard, even though the
driver's true intention was to press the brake to slow down or stop.
If the driver was not aware of this mistake, the vehicle will accelerate unintentionally, potentially resulting
in an accident.
In various countries, for example Japan, there is concern that societal changes such as an aging population
could potentially lead to an increase in such accidents. Dealing with this circumstance has become an urgent
issue for automobile manufacturers, and they are expected to take action as soon as possible.
NOTE 1 The relationship between age and frequency of pedal error accidents is explored in Annex A.
This document specifies the functional requirements for an acceleration control for pedal error (ACPE)
system, which helps to prevent collisions caused by pedal errors and thereby reduces damage.
Such a system notifies the driver at an early stage of the manoeuvre, and suppresses vehicle acceleration.
This is very effective because it encourages the driver to operate correctly and also mitigates the damage in
the event of an accident by delaying the time to collision, and reducing the impact load at a collision.
However, with current technology, it is impossible to determine the driver's true intentions. This is because
it is not possible to directly determine whether the driver is pressing the accelerator correctly or incorrectly.
Therefore, this document describes a system that suppresses acceleration when an obstacle is detected
in the immediate direction of the vehicle's travel and the driver presses the accelerator pedal faster and
deeper than usual. Such a situation suggests that the driver is likely to have pressed the accelerator pedal by
mistake.
An automatic emergency braking system (AEB) that aims to avoid and mitigate collisions is already available
in the market, with the relevant system requirements specified in ISO 22839. However, because driver
operation is given the top priority in such a system, acceleration suppression cannot be activated when
the driver presses the accelerator pedal, even if pressed in error. In addition, the sensors used for AEB are
specialized for detecting objects at a relatively greater distance it is difficult to detect nearby building walls
and windows, which are the main targets of ACPE. Therefore, AEB is unlikely to function in the crash cases
targeted by ACPE systems.
This document does not preclude acceleration suppression for distant obstacles. It is desirable to
simultaneously reduce unnecessary system activations that impede the driver's true intention to accelerate,
and be able to activate the system even for obstacles at a greater distance, depending on the circumstances
in every country.
NOTE 2 The inclusion of vulnerable road users (VRUs) as target obstacles and the extension of target distance are
potential points for development in future revisions of this document.
v
Publicly Available Specification ISO/PAS 19486:2025(en)
Intelligent transport systems — Acceleration control for
pedal error (ACPE) — Performance requirements and test
procedures
1 Scope
This document specifies the functional requirements and test procedures for an acceleration control for
pedal error (ACPE) system. This document applies to the systems installed in light vehicles (category M1
[2]
and N1) and it does not apply to those installed in large vehicles or motorcycles.
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 19206-1, Road vehicles — Test devices for target vehicles, vulnerable road users and other objects, for
assessment of active safety functions — Part 1: Requirements for passenger vehicle rear-end targets
ISO 19206-3, Road vehicles — Test devices for target vehicles, vulnerable road users and other objects, for
assessment of active safety functions — Part 3: Requirements for passenger vehicle 3D targets
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https
...
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