©
ISO 2018
Road vehicles — Functional safety —
Part 10:
Guidelines on ISO 26262
Véhicules routiers — Sécurité fonctionnelle —
Partie 10: Lignes directrices relatives à l'ISO 26262
INTERNATIONAL
STANDARD
ISO
26262-10
Second edition
2018-12
Reference number
ISO 26262-10:2018(E)
ISO 26262-10:2018(E)
ii © ISO 2018 – All rights reserved
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018
CP 401 • Ch. de Blandonnet 8
Phone: +41 22 749 01 11
Website: www.iso.org
Published in Switzerland
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ISO 26262-10:2018(E)
Foreword ........................................................................................................................................................................................................................................vi
Introduction
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1 Scope
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2 Normative references
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4 Key concepts of ISO 26262
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1]) .................................. 2
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4.3.1 Progression of faults to errors to failures
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4.4.1 Introduction ......................................................................................................................................................................... 6
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5 Selected topics regarding safety management
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6 Concept phase and system development
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7 Safety process requirement structure — Flow and sequence of the safety requirements
..17
8 Concerning hardware development
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8.1.2 Single-point fault ..........................................................................................................................................................19
8.1.3 Residual fault ................................................................................................................................................................... 20
8.1.4 Detected dual-point fault ....................................................................................................................................... 20
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8.1.6 Latent dual-point fault ............................................................................................................................................. 21
8.1.7 Safe fault ............................................................................................................................................................................... 21
........ 21
8.1.9 How to consider the failure rate of multiple-point faults related to
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© ISO 2018 – All rights reserved iii
Contents Page
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ISO 26262-10:2018(E)
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Figure 12
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of standards application
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9 Safety Element out of Context
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9.2 Use cases
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10 An example of proven in use argument
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10.4 Target values for proven in use ..............................................................................................................................................
11 Concerning ASIL decomposition
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11.1 Objective of ASIL decomposition ..........................................................................................................................................
11.2 Description of ASIL decomposition ....................................................................................................................................
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12 Guidance for system development with safety-related availability requirements
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12.1 Introduction ...........................................................................................................................................................................................60
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12.2.3 Prevention of hazardous events after a fault ........................................................................................61
12.2.4 Operation after fault reaction ............................................................................................................................ 62
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12.2.6 ASIL decomposition of fault tolerant items
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12.4 Software development phase .................................................................................................................................................. 71
12.4.1 Software fault avoidance and tolerance ....................................................................................................71
12.4.2 Software fault avoidance
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12.4.3 Software fault tolerance
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13 Remark on “
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14 Guidance on safety-related special characteristics
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iv
© ISO 2018 – All rights reserved
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ISO 26262-10:2018(E)
Annex A (informative) Fault tree construction and applications ........................................................................................76
Bibliography
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© ISO 2018 – All rights reserved v
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