R OLL TILT THRESHOLDS FOR 8 DOF DRIVING SIMULATORS

The tilt coordination technique is used in driving simulation for reproducing a sustained linear horizontal acceleration by tilting the simulator cabin. The rotational motion must be slow to remain under the perception threshold and thus be unnoticed by the driver. However the acceleration to render changes fast. Between the slow rotational motion limited by the tilt threshold and the fast change of acceleration to render, the design of the coupling between motions of rotation and translation plays thus a critical role in the realism of a driving simulator. This study focuses on the acceptance by drivers of 8 different configurations for tilt restitution, for a slaloming task. Results show what thresholds have to be followed in terms of amplitude, rate and acceleration.