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Abstract. CAD software for developing geometric models of machines and processes in construction has been analyzed with the methods of geometric modelling and computer simulation. Based on this analysis, issues of teaching students how to create optimal designs and conduct computerized experi-ments as to determining critical operating modes as well as improving motion paths and control modes have been considered. Key words : geometric modelling, computer simulation, construction and road machines, CAD, CAE. <\_^_gb_ Ijh]jZffZ ih^]hlh\db bg`_g_jh\-f_oZgbdh\ ih ki_pbZevghklb «Kljhbl_evgu_, ^hjh`gu_ fZrbgu b h[hjm^h\Zgb_» ij_^mkfZljb\Z_l ijbh[j_l_gb_ gZ\udh\ b agZgbc ijh]jZffguo kj_^kl\, bkihevam_fuo gZ ij_^ijbylbyo fZ-rbghkljhbl_evgh]h dhfie_dkZ MdjZbgu b aZjm[_`guo kljZg. Ijb wlhf gZ feZ^rbo dmj-kZo hkh[h_ \gbfZgb_ m^_ey_lky [Zah\hc ih^-