PD ISO/PAS 21448:2019 Road vehicles. Safety of the intended functionality

PD ISO/PAS 21448:2019

Road vehicles. Safety of the intended functionality

Status : Current, Project Underway   Published : January 2019



What is this standard about?

The absence of unreasonable risk due to hazards resulting from functional insufficiencies of the intended functionality or by reasonably foreseeable misuse by persons is referred to as the Safety Of The Intended Functionality (SOTIF). This document provides guidance on the applicable design, verification and validation measures needed to achieve the SOTIF. This document does not apply to faults covered by the ISO 26262 series or to hazards directly caused by the system technology (e.g. eye damage from a laser sensor).

This document is intended to be applied to intended functionality where proper situational awareness is critical to safety, and where that situational awareness is derived from complex sensors and processing algorithms; especially emergency intervention systems (e.g. emergency braking systems) and Advanced Driver Assistance Systems (ADAS) with levels 1 and 2 on the OICA/SAE standard J3016 automation scales. This edition of the document can be considered for higher levels of automation, however additional measures might be necessary. This document is not intended for functions of existing systems for which well-established and well-trusted design, verification and validation (V&V) measures exist at the time of publication (e.g. Dynamic Stability Control (DSC) systems, airbag, etc.). Some measures described in this document are applicable to innovative functions of such systems, if situational awareness derived from complex sensors and processing algorithms is part of the innovation.

Intended use and reasonably foreseeable misuse are considered in combination with potentially hazardous system behaviour when identifying hazardous events.

Reasonably foreseeable misuse, which could lead directly to potentially hazardous system behaviour, is also considered as a possible event that could directly trigger a SOTIF-related hazardous event.

Intentional alteration to the system operation is considered feature abuse. Feature abuse is not in scope of this document.

Standard NumberPD ISO/PAS 21448:2019
TitleRoad vehicles. Safety of the intended functionality
StatusCurrent, Project Underway
Publication Date14 January 2019
Normative References(Required to achieve compliance to this standard)ISO 26262-1:2018
Informative References(Provided for Information)ISO 26262 (all parts)
International RelationshipsISO/PAS 21448:2019
DescriptorsFunctional analysis, Specification (approval), Road vehicles, Electrical equipment, Software engineering techniques, Safety engineering, Electrical properties and phenomena
Title in FrenchVéhicules routiers. Sécurité de la fonction attendue
ISBN978 0 580 94502 1
File Size8.742 MB

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