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    SAE

    SAE 2009-01-0751 : 2009

    Driver Override for Safety-Critical Vehicles and Networks

    Standard Details

    Operator error is a primary cause of vehicle accidents, yet human ingenuity is critical to effectively react in situations automation is not prepared to handle. Human operators have always been the ultimate authority, but their decisions may or may not be safe. This paper explores the constraints and requirements of vehicle systems that support automation override of a human operator. We adopt the view that a human operator remains the ultimate authority until grave risk is encountered, at which time the automation overrides strictly to re-establish a safe operating state. An override system must continually monitor vehicle state, predict near-term risk levels, compute a strategy to mitigate substantial risk, and warn the operator of the impending risk given sufficient time. Override action must occur just-in-time to re-establish a safe state before risk increases beyond the “grave” threshold. Controlled flight into terrain and aircraft damage/failure override case studies are presented, along with a discussion of how such aircraft override technologies could translate to ground vehicle systems.

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    General Information

    Status : ACTIVE
    Standard Type: Main
    Document No: SAE 2009-01-0751 : 2009
    Document Year: 2009
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    SAE 2009-01-0751 : 2009
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