Abstract
Open and closed loop test procedures and subjective rating procedures on vehicle handling properties were developed and used in two experiments. In the first experiment, influences of tire pressure variations on vehicle handling were determined in open loop tests. The second experiment dealt with the effects of three different handling characteristics c:- very understeering, understeering and oversteering - on straight lane driving. Special interest was given to the spectral analysis of driver steering inputs. Top frequency, top amplitude and energy distribution measures showed significant differences between the three vehicle handling characteristics. These differences were also verified with subjective ratings.