This paper presents a new approach to optimizing route selection in urban road networks with sparsely placed traffic counters. By leveraging graph theory and Dijkstra’s algorithm, we propose a new method to determine the shortest path between origins and destinations in city traffic networks with sparsely placed counters. The method is based on the similarities between traffic flows recorded at the counter and the streets that generate traffic for a given counter. The advantage of this method is the use of a secondary counter function to obtain data that are built into the shortest path determination model and the free choice of the time of day for which the path is searched. The proposed method is implemented using the programming language AutoLISP 2022 and program AutoCAD 2022, providing a valuable tool for transportation engineers and urban planners. This paper presents a model of the shortest path that integrates one-way streets, the average speed of the car, as well as the delay time at traffic-lighted and non-traffic intersections. The model was applied to the traffic network of the city of Sarajevo (Bosnia and Herzegovina), but there are no restrictions for application to any network equipped with traffic counters. The obtained results show a high agreement with the Google Maps service as a reference system.

The central zone of the city is the largest group of destination targets and as such attracts a large amount of daily migration. The basic idea of sustainable urban mobility is to provide a better quality space for pedestrians and cyclists as carriers of a sustainable way of movement through the discouragement of individual motorized traffic. The article presents one view of the organization of the city road network with the aim of achieving the sustainability of the system in the central city zone of Banja Luka.

The term "Durmitor flysch" was first introduced into the geological literature in 1948 by [1].. Under this term, he refers to a powerful geological formation, formed at the transition from the Upper Cretaceous to the Paleogene. Its distribution begins from the northern Albanian table and the so-called Cukali zone in the south, through the central part of Montenegro and northeastern Herzegovina, and extends to central Bosnia and Mount Vlašić [1]. It is named after the highly noticeable and extensive development of the southwest slopes of Mount Durmitor, while the best gradation of this formation and all modern geodynamic processes can be most clearly observed in the area of the Čemerno mountain pass in northeastern Herzegovina. The specific characteristics of this part of the Durmitor flysch complex will be the subject of this paper.

The provision and maintenance of road infrastructure is a major global business, consequently it is essential that road maintenance services are provided in the most cost effective manner. Without regular maintenance, roads can rapidly fall into disrepair, preventing realization of the longer term impacts of road improvements on development, such as increased agricultural production and growth in school enrollment, which is of particular importance for a network of local (access) roads. Inadequate local roads maintenance in Albania is proposed to be solved by implementing performance based maintenance approach for which the costing exercise is presented within the paper.