Abstract
A description is given of an apparatus for measuring the fluency of driving, suitable also for driver-training. The apparatus gives optical and/or acoustic information on variations in fluency of driving on account of centrifugal forces as well as sudden acceleration or deceleration. Experiments were carried out, comparing the fluency of driving between groups of people, that distinguished by stage of training and driving experience and being trained with and without V-Gerät. The reason for the significantly more fluent driving after instruction with the V+Gerät is the "feedback "strassed by indication of errors leading to faster