Abstract
Currently, the sustainability of public transport services in cities is increasing every day is an important factor. The stability of public transport is important for the mobility of residents, timely access to work, medical facilities or places of recreation. Public transport, on the other hand, is a mode of transport that directly competes with private cars. One of the most important factors ensuring fast and high-quality passenger transport service is its speed. Low traffic speed is one of the main reasons preventing people from using public transport. Introducing differential fares can be economically advantageous as it helps regulate passenger flow, increases the revenues of transport companies, and improves public transport services.