Perception of longitudinal acceleration on dynamic driving simulator

Classical washout algorithm for driving simulators doesn’t take into account the non-linearity of human sensory systems. Our previous work showed that the most realistic tilt/translation ratio for the simulation of braking during passive driving depends on the level of deceleration. However, the interpretation of previous results cannot be extended to acceleration. Therefore, a new experiment was developed in order to determine if the best tilt/translation ratios found for braking are also valid for acceleration. The present results suggest that the acceleration is generally overestimated directly proportional to the level of acceleration, but contrary to what was observed for deceleration, the variation of tilt/translation ratio doesn’t seem to have an impact on the final perception of motion. As a conclusion, the simulation of deceleration and acceleration on a dynamic driving simulator should be considered separately.