High-comfort vehicle with 2-6 seats. It is driven with a traction electric drive, which is powered from a contact network or on-board energy storage unit. Used for driving on urban and suburban routes. The design of the unicar makes it possible to arrange its certain modules into a single train through a rigid coupling. The number of sections of the train and their capacity depends on the assumed passenger flow. The personalized version of unicar U4-431-01 in tropical version is designed for regions with arid climate and upper temperature limit of operation up to + 55 °C inclusive.