S.A.D.E.—A Standardized, Scenario-Based Method for the Real-Time Assessment of Driver Interaction with Partially Automated Driving Systems

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Abstract
Vehicles equipped with so-called partially automated driving functions are becoming more and more common nowadays. The special feature of this automation level is that the driver is relieved of the execution of the lateral and longitudinal driving task, although they must still monitor the driving environment and the automated system. The method presented in this paper should enable the assessment of the usability and safety of such systems in a standardized manner. It is designed to capture a driver’s interaction with a system via the human–machine interface in specific scenarios in user studies. It evaluates several observable aspects of this interaction in real time and codes inadequate behavior in the categories “system operation”, “driving behavior” and “monitoring behavior”. A generic rating regarding the overall handling of the scenario is derived from these criteria. The method can be used with the assistance of a tablet application called the S.A.D.E. app (Standardized Application for Automated Driving Evaluation). Initial studies using driving simulators show promising results regarding its ability to detect problems related to a system or HMI, with some future challenges remaining open.
Funding Information
  • Bundesanstalt für Straßenwesen (FE82.0708)

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