This paper presents the factors, performance, and indicators of occupational safety, as well as a method to select and rank occupational safety indicators based on the expert evaluation method and the fuzzy analytic hierarchy process (fuzzy AHP). A case study is done on road construction companies in Serbia. The key safety performance indicators for the road construction industry are identified and ranked according to the results of a survey that included experts who assessed occupational safety risks in these companies. The case study confirmed that organisational factors have a dominant effect on the quality of the occupational health and safety management system in Serbian road construction companies. OPSOMMINGHierdie artikel toon die faktore, prestasies en aanwysers van beroepsveiligheid en 'n metode om beroepsveiligheid aanwysers te kies en te rangskik. Die rangskikking van beroepsveiligheid aanwysers is gegrond op die deskundige evaluasie metode en die wasige analitiese hiërargie proses. 'n Gevalle studie is geloods op padkonstruksie maatskappye in Serwië. Die sleutel veiligheidsprestasieaanwysers is geïdentifiseer en rangskik volgens die resultate van 'n opname onder deskundiges wat die beroepsveiligheid risiko's in hierdie maatskappye assesseer. Die gevalle studie het bevestig dat organisatoriesefaktore 'n daadwerklike effek op die gehalte van die beroepsveiligheid bestuurstelsel in Serwiese padkonstruksie maatskappye het.

This paper presents an analytical–synthetic model of ergonomic research of the abilities of the dispatcher/operator in the control room for the automatic control of railway transportation. Twenty performance indicators describing the operators’ performance (work capacity and perceptive abilities) and the main characteristics of the control room (work organization and ergo-technical analysis) are identified. A group fuzzy analytic hierarchy process is applied in the process of ranking and selection of key performance indicators of railway control rooms. The selected key performance indicators (the operator’s hand movement, visual symptoms of fatigue, device error analysis, location and dimensions of the control desk) are analysed in detail.

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In this paper, the key performance indicators related to the smart grid efficiency, as the key factor of any energy management system implementation have been analysed. The authors are proposing multi-criteria fuzzy AHP methodology for the determination of overall smart grid efficiency. Four criteria (technology, costs, user satisfaction, and environmental protection) and seven performances (according to EU and US initiatives for analysis of benefits and effects of smart grid systems) for the selection of optimal smart grid project are defined. The analysis shows that the dominant performances of the optimal smart grid project are efficiency, security and quality of supply. The methodology is illustrated on the choice of smart grid development strategy for the medium size power distribution company.