Before revision:  Here, we consider the existing literature on how driver steering in slalom tasks is affected by  down-scaling of vestibular cues, and propose a driver model that can explain the empirically observed effects : Initially decreased task performance and increased steering effort , and partial reversal of these effects with prolonged task exposure . Unexpectedly, the model also reproduced another empirical finding: A local optimum for motion down-scaling, where path-tracking is better than with one-to-one motion cues  .
After revision:  Here, we consider the existing literature on how driver steering in slalom tasks is affected by down-scaling of vestibular cues, and propose a driver model that can explain the empirically observed effects , namely: decreased task performance and increased steering effort , and partial reversal of these effects with prolonged task exposure . Unexpectedly, the model also reproduced another empirical finding: A local optimum for motion down-scaling, where path-tracking is better than with one-to-one motion cues .