With more stringent requirements for efficient utilization of energy resources within the transport industry a need for implementation of sustainable development principles has appeared. Such action will be one of competitive advantages in the future. This is especially confirmed within the road transport sector. A methodology implemented in public procurement procedures for fleet renewal regarding the calculation of road vehicles’ operational lifecycle costs has been analyzed in detail in this paper. Afore mentioned calculation comprises the costs for: vehicle ownership, energy, carbon dioxide and pollutants emissions. Implementation of this methodology allows making the choice of energy efficient vehicles and vehicles with notable positive environmental effects. The objective of the research is to assess the influence of specific parameters of vehicle operational lifecycle costs, especially energy costs and estimated vehicle energy consumption, on vehicle choice in the procurement procedure. The case of urban bus fleet in Serbia was analyzed. Their operational lifecycle costs were calculated and differently powered vehicles were assessed. Energy consumption input values were defined. It was proved that defined fleet renewal scenarios could influence unquestionable decrease in energy consumption.

Most of the air pollution originates from combustion processes, whereby traffic is one of the most important sources. Road traffic is one of the leading factors of pollution, so determining its contribution to pollution and overall emissions is very important. This study is a tool to develop a calculus method to determine the specific and annual emissions from road transport. The estimation was carried out using the methodology developed for combustion analysis. The study was based on vehicle fleet composition, fuel, and engine data, which represented the input for the combustion process simulation, while the output was combustion products. The following gases (chemical species) were included in the analysis: carbon dioxide (CO2), carbon monoxide (CO), and nitrogen oxides (NOX). In the end, the specific emission factors, as well as bulk emission factors for urban and open road transport were derived. The results showed good agreement with the results of other authors.

Transport, especially road transport is one of the main sources of emissions of greenhouse gasses as well as numerous air pollutants that have harmful effects on human health, particularly in urban areas. The European Union, as well as many of its Member States are making huge efforts to reduce these emissions and their harmful effects. One possible solution is the application of green public procurement, which can be used as a powerful tool to stimulate the demand for zero and low emission vehicles and to promote the introduction and increase the share of renewable energy sources in the transport sector. The activities of the European Union related to encouraging greater use of green public procurement as an instrument for solving environmental problems and the experience of the countries with the longest tradition in their application are the subject of the analysis in this paper. At the end of the paper, special attention is paid to the challenges and possibilities of using green public procurement as a means to achieve the environmental goals of the transport sector of the Republic of Serbia.

An advanced and responsible community shall raise awareness on the need for its own sustainability and create impacts through formulation of ethical principles and adoption of legal guidelines. Transport needs to strive towards sustainability that is defined inter alia, through efficient use of renewable energy resources. In order to reach transport process sustainability objective, one needs to establish a methodology and to define, determine, adapt and apply indicators and methods for transport industry management. This paper presents an application methodology for a sustainability management indicator and method, and proposes a cycle to be applied when developing the method and the overall indicator of overall transport process effectiveness in freight transport and sustainable transport in general. The paper deals with the development cycle, while the indicator itself and the calculations were presented in previous papers by the listed authors.