Functional Safety Assessment of an Automated Lane Centering System

2018Final report; Jul 2015- Oct 2016PDFTech ReportDOT-VNTSC-NHTSA-17-01DOT HS 812 573DTNH22-14-V-0013651HS6CA100Center linesTraffic lanesFailure analysisHazard analysisRisk assessmentSystem safetyFail safe systemsSafety engineeringAutomatic steering controlAutomated lane centeringUnited StatesUnited States. Department of Transportation. National Highway Traffic Safety AdministrationBecker, ChristopherYount, LarryRozen-Levy, ShaneBrewer, JohnJohn A. Volpe National Transportation Systems Center (U.S.)United States. Department of Transportation. National Highway Traffic Safety AdministrationNTL-INTELLIGENT TRANSPORTATION SYSTEMS-Driver Assistance Systems (Vehicles)NTL-INTELLIGENT TRANSPORTATION SYSTEMS-INTELLIGENT TRANSPORTATION SYSTEMSVolpe National Transportation Systems Center, Technical Reference CenterThis report describes the research effort to assess the functional safety of a generic automated lane centering (ALC) system,. a key technology that supports vehicle automation by providing continuous lateral control to keep the vehicle Within the travel lane. 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 (STPA) methods. This study identifies 5 vehicle-level safety goals, 47 functional safety requirements (an output of the STPA process) for the ALC system, and 26 additional safety requirements (also an output of the STPA process) for the ALC system based on the results of the safety analysis. This study also uses the results of the analysis to develop potential test scenarios and identify possible areas for diagnostic trouble code coverage