Abstract
The purpose of this work was to analyse truck egress motions in order to simulate them using a digital human model (DHM). Eight subjects participated in the experiment. Twelve truck configurations were tested using an adjustable mock-up. Ingress and egress motions were recorded using an opto-electronic system, synchronised with force sensors to measure contact forces. The motions were reconstructed for a commercial DHM tool by inverse kinematics. The beginning of egress motion was analysed. Motion coordination was investigated thanks to contact diagrams of hands and feet. Two foot strategies (FSs) were observed according to which foot reached the highest step. Four major hand strategies (HSs) were defined according to when the hands moved down along the handles. FSs and HSs were found to be subject specific, but could change depending on the truck configuration.
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