In the recent years, the main focus of the development of Advanced Driver Assistance Systems has been the use of these systems on highways or rural roads. The continuous increase of urban traffic creates a strong motivation to support the driver also in urban driving situations. In this context the controllability evaluation of these systems needs to be analyzed with regard to necessary adaptations due to differences in situation complexity and their time-constants. The subproject 'Controllability' of the German cooperative project UR:BAN analyzes the existing methods with respect to necessary adaptations and develops new methods. To that end, a real-vehicle study with 26 naive drivers has been conducted to assess the influence of the driving situation in the controllability evaluation. In the present study, reaction patterns in the driver's steering wheel operation in cases of false-positive steering interventions were analysed in a first step. The investigated interventions incorporated possibilities to interrupt the manoeuvre planned by the system which were shown to be able to reduce the failure effect in case of an erroneous intervention. For a system based decision whether the driver intends to override the system intervention or if his input is only due to the motion of the steering wheel and the vehicle more detailed analyses of the driver steering input during normal system use and in cases without system interaction are necessary. As second part, the situational influence of the driving situation on the driver steering behaviour was shown. To that end, insights from the analysis of the natural driving behaviour in different driving situations were used to interpret intra-individual differences in the driver reaction to system initiated steering interventions in false-positive cases. The higher feedback steering control activity while driving in pylon alley led to lower yaw rates and less lateral displacement during erroneous system interventions. Consequently this study shows that the driving situation has an influence on the steering behavior of drivers and thus on the controllability of system initiated steering interventions.


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    Title :

    UR:BAN: Controllability evaluation of system interventions of evading assistance


    Contributors:


    Publication date :

    2014


    Size :

    12 Seiten, Bilder, 16 Quellen


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




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