Sustainable development is a top priority for the EU, which takes environmental concerns into account in all its policy-making. A good quality of life depends on a whole series of factors, including having enough money and dwelling with good communication conditions, also being in good health. Public transport takes the significant influence to the town-people life style and city economy. It is incontestability the importance of public transport for the passenger communications in Lithuanian cities, as the usage of the regular transport reaches more than 60 % and it has considerably less influence on environment, infrastructure requirement, decreases the vehicles’ parking problems comparing with usage of cars. Therefore it is necessary to ensure beneficent functioning of public transport, especially buses and trolley-buses. The survey results show, that the main factor for the choice of public transport service is the purchasing power or life quality level of urban residents. Investigation of the passenger market corroborated the necessity of the public transport service and combination with the car usage for the sustainable development of communication systems in urban and suburb territories
