Investment - Regarding investments, the trolleybus system has an investment unfavourableness of about 10% in comparison to bus system, but at the same time it compensates it by bigger revenue resulted from higher system attractivity and accessibility, longer operating life and positive ecologic effects.

Visual pollution - In terms of city's „visual pollution“ by overhead lines, it is clear that bus system surpasses the trolley bus one, but there are also other experts' opinions. The researches have shown that trolley bus system is much better accepted by the side of users than bus. Overhead line that gives it constant visual presence in public areas stands for advantage, not a defect. Apparent network of routes makes the accessibility of public transport system much better.