## 5 Research Results  
### Descriptive Statistics and the Application of the Chi-Square Test of Independence  
Of the total sample of 680 residents of Belgrade, 51.5% are women, while 48.5% are men. In terms of the age structure of the respondents, most of them are between 18 and 25 years old (34.1%), followed by 26 to 35 years old (21.5%). According to the acquired level of education, the most numerous respondents are those with a Bachelor of Science degree, which make up 39.9% of the sample, while the largest number of respondents are in permanent employment (56.8%). Also, the largest number of respondents belongs to the group with a personal monthly income of EUR 501 to EUR 750 (28.1%), followed by those with an income of EUR 750 to EUR 1000 (24.0%). Considering the above, it can be concluded that the sample consisted mostly of highly educated and employed young and middle-aged respondents with mostly average incomes, characteristic of Belgrade (see Table 4). \begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Sample Characteristics** & \(n\) & **\%** & **Sample Characteristics** & \(n\) & **\%** \\ \hline Gender & & & Education & & \\ \hline Female & 350 & 51.5\% & Primary education & 7 & 1\% \\ \hline Male & 330 & 48.5\% & High school education & 167 & 24.6\% \\ \hline Age & & & Higher education & 96 & 14.1\% \\ \hline \(<\)18 & 6 & 0.9\% & Bachelor of Science degree & 271 & 39.9\% \\ \hline \(18\)–25 & 232 & 34.1\% & Master of Science degree & 125 & 18.4\% \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Socio-demographic and economic characteristics of the users. Figure 2: Methodological flow chart of this study. In the most common case, the mileage traveled in one direction of the trip with the purpose of commuting is in the range of 5 km to 8 km (36.9%), and from 2.5 km to 5 km (38.8%) when realizing a trip with other purposes, such as entertainment, recreation, or shopping. During commuting trips, respondents most often opt for a passenger car for daily trips (42.2%), for public transport when traveling several times a week (12.4%), for a passenger car when traveling several times a month (15.9%), and for other types of transportation (such as taxis, car sharing, etc.) for trips several times a year (31.3%). On the other hand, for trips with other purposes, respondents mostly use a passenger car every day (46.8%), several times a week, and several times a month on foot (31.6% and 34.7%, respectively), and several times a year use other modes of transportation (36.9%). Environmentally friendly and sustainable modes of transportation such as electric bicycles and electric scooters are almost never used for commuting or other purposes. Out of the total number of respondents, 54 of them (7.9%) use electric microvehicles such as electric bicycles (57.4%), electric mopeds (3.7%), and electric scooters (38.9%). The most frequent use of microvehicles is for both purposes, i.e., during commuting trips and trips for other purposes, realized several times a week (55.0% and 47.6%, respectively). As the most important reason for use, respondents cited shorter travel time (29.6%), while environmental benefits were cited as a significant and medium-significant reason (35.2% each). The remaining respondents (626; 92.1%) do not use these vehicles for their trips, and they were considered in further analysis to predict the acceptability of e-bicycles. In their opinion, road traffic contributes to a very large and large extent to the pollution of the environment in Belgrade by the emission of polluting substances (52.2% and 26.8%, respectively) and the emission of noise pollution (39.0% and 28.8%, respectively). Also, as the most important reason for not using electric bicycles, they state that the lack of infrastructure (41.9%) and (lack of) safety during trips (40.3%) have the greatest influence to a very large extent.