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Inter and intra-individual differences in steering wheel hand positions during a simulated driving task

Abstract : This paper describes an experimental study focusing onto the way drivers use the steering wheel while performing a 2D tracking task. The stimulus during this task was a steering wheel angle signal recorded in real situations involving turns and straight lines performed at about 30 km/h. The hand positions of 20 volunteers were recorded in 6 steering scenarios involving 7 road geometries using a 3D motion capture system. The hand movement data were analysed via a descriptive/inferential procedure: each hand was considered using nine indicators – eight membership value averages linked to eight fuzzy angle windows and a frequency value related to the off steering wheel position – while the indicators were investigated using multiple correspondence analysis and non-parametric global and post-hoc tests. Results showed that inter-individual differences were larger than intra-individual differences. Considering 2 × 9 = 18 windows, the inter-individual differences mainly appeared during two main kinds of steering hand strategies: with versus without crossing hands, the latter being the most often used (17 among 20 participants). The intra-individual data showed that some drivers maintained a nearly identical strategy for all road geometries, while other drivers changed their hand position with the direction and/or maximum angle value of the turn.
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Submitted on : Monday, November 15, 2021 - 1:27:20 PM
Last modification on : Wednesday, March 9, 2022 - 11:58:02 AM

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Jessica Schiro, Pierre Loslever, François Gabrielli, Philippe Pudlo. Inter and intra-individual differences in steering wheel hand positions during a simulated driving task. Ergonomics, Taylor & Francis, 2014, 58 (3), pp.394-410. ⟨10.1080/00140139.2014.978899⟩. ⟨hal-03428938⟩



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