A Comprehensive Evaluation Approach for Highly Automated Driving

• Since the last decade, development efforts by academia and industry for automated driving functions have increased significantly. Also, the European research project AdaptIVe is looking into this topic. Due to the large operation spaces and various complex situations that are covered by these functions, efforts for evaluation increase also significantly. Within AdaptIVe, a comprehensive evaluation approach for automated driving functions ranging from SAE level 2-4 has been developed [1]. The approach splits the evaluation into technical, user-related, in-traffic and impact assessment addressing safety and environmental effects of automated driving. For each evaluation type appropriate test tools and methods are selected e.g. field test for technical assessment, trials on test track and in real traffic for the user-related assessments and simulations for the in-traffic and impact assessment. Next to the assessment type also the characteristics of the function must be considered when deciding for specific test tools. Hence, besides to the level of automation [8] the automated driving functions are classified into continuous and event-based operating functions. Whereas event-based operating functions are only operating for a short period in time (e.g. automated parking), continuous operating functions are, once they are active, operating for longer time periods (e.g. highway automation). Based on the classification the aspects to be evaluated and test methods are selected for all assessment types. The developed methodology has been applied to several automated driving functions developed within AdaptIVe. As an example, for the technical assessment of continuous operating functions it has been assessed whether the driving behavior of the developed functions is similar to human driving behavior and therefore not disturbing human traffic. In the user-related assessment, issues related to driver behavior, understanding of automation, trust, mental workload, resuming control, vigilance, usability and acceptance has been looked at. In this paper the key aspects of the AdaptIVe evaluation methodology for technical, user-related, in-traffic and impact assessment are presented as well as the key results of the application of this methodology on the within AdaptIVe developed automated driving functions.

Nyckelord

automated driving

comprehensive evaluation

technica assesment

user-related assessment

in-traffic assessment

impact assessment

safety

environmental effects

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