Effects of visual roll on steering control and gaze behavior in a motorcycle simulator |
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| Affiliation: | 1. Laboratory for Road Operations, Perception, Simulators and Simulation, French Institute of Sciences and Technology for Transport, Development and Networks, France;2. Laboratoire CIAMS (EA 4532), Univ Paris-Sud, Orsay, France;3. IRCCyN (Institut de Recherche en Communications et Cybernétique de Nantes), CNRS, Ecole Centrale de Nantes, LUNAM Université, Nantes, France;1. Laboratoire de Mathématiques UVSQ, Bâtiment Descartes, 45 avenue des États-Unis, 78035 Versailles cedex, France;2. Institut für Algebra und Zahlentheorie, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany;3. Institut für Mathematik, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland;1. Department of Civil Engineering, Indian Institute of Technology Hyderabad, Kandi, Medak 502285, India;2. Department of Civil Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India;1. Intelligent Transportation Systems Research Center, Wuhan University of Technology, Wuhan 430063, China;2. Engineering Research Center for Transportation Safety, Ministry of Education, Wuhan 430063, China;3. National Engineering Research Center for Water Transport Safety, Wuhan University of Technology, Wuhan 430063, China;4. Department of Systems Design Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada;1. COSYS-PICS-L, Univ Gustave Eiffel, IFSTTAR, F-78000 Versailles, France;2. TS2-SATIE-MOSS, Univ Gustave Eiffel, IFSTTAR, F-91190 Gif-sur-Yvette, France |
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| Abstract: | The goal of this study was to examine the effects of visual roll tilt on gaze and riding behavior when negotiating a bend using a motorcycle simulator. To this end, experienced motorcyclists rode along a track with a series of right and left turns whilst the degree of visual roll tilt was manipulated in three different conditions. Gaze behavior was analyzed by using the tangent point as a dynamic spatial reference; the deviation of gaze to this particular point was computed in both the horizontal and vertical directions. Steering control was assessed in terms of the lateral positioning, steering stability and number of lane departures. In the no-roll condition, the motorcyclists tracked a steering point on the road ahead, which was compatible with the hypothesis of “steer where you look” behavior. In the roll condition, our results revealed that the horizontal distribution of gaze points relative to the tangent point was preserved. However, significantly more fixations were made further ahead of the tangent point in the vertical direction. This modification of visual behavior was coupled with a degradation in steering stability and an offset in lateral positioning, which sometimes led to lane departures. These results are discussed with regard to models of visual control of steering for bend negotiation. |
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| Keywords: | Motorcycle simulator Functional fidelity Visual roll Visual strategies Steering control Bend negotiation |
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