This master's thesis addresses the feasibility of renovating the Zaloška urban arterial road in Ljubljana with the aim of improving conditions for public passenger transport and promoting the principles of sustainable mobility. The current state of Zaloška Road is characterized by minor traffic congestion, primarily due to a high dependence on private vehicles, which reduces the efficiency and competitiveness of public transport. Using the PTV Vissim microsimulation tool, a capacity analysis of the existing state and several proposed scenarios was conducted. The analyzed measures included various traffic arrangements, ranging from the reallocation of existing road space for bus lanes to constructional road widening and the introduction of High-Occupancy Vehicle lanes. The evaluation was based on traffic indicators such as travel times and average speeds during morning and afternoon peak hours. Measures based solely on removing traffic lanes from private vehicles without widening the roadway cause extensive congestion that extends to the motorway ring. On the other hand, road widening ensures the best traffic flow for all participants; however, it is financially and spatially demanding and encourages the use of private vehicles in the long term. The introduction of combined lanes for buses and high-occupancy vehicles proves to be a compromise solution. Such an arrangement improves conditions for public transport while simultaneously promoting carpooling and other forms of sustainable mobility, which is consistent with the goals of the Sustainable Urban Mobility Plan of the Municipality of Ljubljana regarding the change in travel habits.
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