International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

Transport is the backbone of any city. With its help, links are established between urban areas and the suburbs, as well as social interconnection is carried out. The hub makes it easy to transfer between different routes and types of public transport. The article discusses the classical classification of the tree-dimensional structures of transport hubs, as well as a new extended classification.

The development of high power electronics, improvement of existing and emerging of new battery technologies and optimization of electric motors over the last decade are some of the issues that have raised the interest in electric vehicles. Based solely on tank to wheel analyses, electric vehicles are regarded as zero emission vehicles. Regarding these facts, the research presented in this paper is focused on mixed traffic with different percentage rates of electric vehicles and its environmental influence in urban areas. A model of a mixed traffic stream comprised of conventional and electric vehicles was built upon a microscopic single lane urban traffic simulator.

Through number of parallel simulations of solely conventional and mixed traffic stream and analysis of the results, we have evaluated the influence that certain presence rates of electric vehicles in the mixed traffic stream have on the exhaust emission. The results that we have obtained are constrained by the assumption that the electric energy used by the electric vehicles originates from renewable energy sources.