Abstract
The paper presents results of simulation investigations of biaxial vehicle motion on an even and uneven road during lane-change-type manoeuvre. Test conditions, method, data processing, analysis and presentation are according to ISO/TR 8725 [l]. The road surface irregularities adopted for the investigations correspond to two roads of different class according to ISO/TC 108/253 [2] and one ideal, even surface. Obtained results indicate that there is a considerable influence of road irregularities on vehicle behaviour during lane-change-type manoeuvre.