Istrazivanja i projektovanja za privreduJournal of Applied Engineering Science

Current problems of the time we live in, which appear in the sharpest form in the world, are problems of energy and environmental protection. Ecologically cleaner urbane passenger public transport system is an imperative of sustainable development of cities. Despite the fact that this system and its subsystems represent the most important service of mobility in urbane agglomerations, it is also one of the main sources of urbane pollution and exhaust gases emission. Problems of urbane pollution have initiated adoption of series of strict standards and regulations regarding limitations of exhaust gases emission, as well as usage and quality of operative energy. Bus subsystem, as a subsystem with the largest share in urban passenger public transport in cities, is also the most signifi cant bearer public transport function in Belgrade. In that sense, from the aspect of reduction of exhaust gases emission and noise, new types of vehicles, which use ecologically acceptable energy, are becoming increasingly important. The paper presents practical results of usage of new types of buses in Belgrade, as well as guidelines of development policy which creates conditions for mass usage of ecologically clean vehicles as and important segment of sustainble development of the city.