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REPORT DOCUMENTATION PAGE
OMB No.0704-0188
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Paperwork Reduction Project (0704-0188), Washington, DC 20503.
1. AGENCY USE ONLY (Leave blank)
August 2018
3. REPORT TYPE AND DATES COVERED
July 2015 – March 2016
Functional Safety Assessment of a Generic Steer-by-Wire Steering System With Active
Steering and Four-Wheel Steering Features
Intra-Agency Agreement
DTNH22-14-V-00136
51HS6CA100
6. AUTHORS
Christopher Becker, John Brewer, Larry Yount, David Arthur, and Fouad Attioui
7. PERFORMING ORGANIZATION NAME AND ADDRESS
John A. Volpe National Transportation Systems Center
55 Broadway
8. PERFORMING ORGANIZATION
REPORT NUMBER
DOT-VNTSC-NHTSA-16-06
9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES)
National Highway Traffic Safety Administration
1200 New Jersey Avenue SE.
10. SPONSORING/MONITORING
AGENCY REPORT NUMBER
DOT HS 812 576
11. SUPPLEMENTARY NOTES
Paul Rau was Contracting Officer Representative for this project.
12a. DISTRIBUTION/AVAILABILITY STATEMENT
This document is available to the public through the National Technical Information Service,
Springfield, Virginia 22161, www.ntis.gov.
This report describes the research assessing the functional safety of foundational steering systems,. specifically, steer-by-wire
(SbW) systems. This study also considers the additional active steering and four-wheel steering features, which could potentially be
incorporated into some SbW systems. This study follows the Concept Phase process in the ISO 26262 standard and applies hazard
and operability study, functional failure modes and effects analysis, and systems theoretic process analysis methods. in total, this
study identifies five vehicle-level safety goals and 81 SbW system functional safety requirements (an output of the ISO 26262
process). This study uses the results of the analysis to develop potential test scenarios and identify possible areas for diagnostic
steer-by-wire, SbW, active steering, four wheel steering, 4WS, hazard and operability study,
HAZOP, failure modes and effects analysis, FMEA, systems theoretic process analysis, STPA,
ISO 26262, hazard analysis, risk assessment, and safety requirements.
17. SECURITY CLASSIFICATION
OF REPORT
18. SECURITY CLASSIFICATION
OF THIS PAGE
19. SECURITY CLASSIFICATION
OF ABSTRACT
20. LIMITATION OF ABSTRACT
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