## 4 Results
### Sensitivity Analysis  
A sensitivity test was applied for all levels. In level 1, the score of \"Transport Quality\" criterion was modified from 0.335 to 0.35. Certainly, the scores of the other criterion in this level were adjusted in order to keep the value one for the total sum of the weight scores, respectively, the score of the lower level elements changed accordingly (as Equation (7) indicates). In the sensitivity analysis, the first ranking level was retained and the change in ranking was examined, based on previous and ongoing public transportation projects in the city, this implication might cause a change in the priorities of the passengers. Public transportation projects have been launched recently by the greater Amman Municipality to improve the supply quality of the service such as the Amman Bus rapid transit (BRT) project, which is going to be the city's initial bus public transit system, within which premium, high-capacity buses run on exclusive and utterly separate lanes. The system can embody the development and style of stops, stations, traveler data, and vehicle specifications. In Amman in the busiest corridors the frequency of the buses will be increased to 3 min of the buses running. The BRT corridors in the capital of Jordan are integrated into the public transport network. One of the ambitious objectives of the project is to create direct BRT lines for the users from their origin to destination. As a pre-condition, an in-depth network of feeder services is being designed together with the BRT. Feeders can largely be buses but also may additionally embody smaller vehicles. The feeders will transport from their destinations to the closest BRT stop, thus can conjointly give a high-quality and frequent service which will probably increase the transport, and service quality satisfaction [35]. Therefore, weighting and ranking in the first level might be changed in the future; in the sensitivity analysis this possible change was followed. Having examined several options of small modifications in weight scores and their impact on ranking, it was found that a little increase of the weight \"Transport Quality\" (and parallel a small decrease of Service Quality) as shown in Table 7, caused the most significant rank change in the results. Interestingly, this change indicated the high importance of discounted tickets which was among the objectives of the research to examine fare considerations in the system. Even though the change of scores is very minor in the first level, the \"Safety of travel\" attribute fell by five positions for this minor change and \"Discounted tickets\" kept or even improved its ranking. Thus, level 2 was found to be sensitive, as shown in Table 8.  
The element \"Safety of travel\" gained merely the sixth rank with only a slight modification of the respective first level attribute, the \"Transport quality\". Based on this, the element \"Discounted tickets\" can be considered as most important, being more stable than the originally prioritized \"Safety of travel\". As can be seen in Table 7, the other attributes proved to be stable in rankings. Table 9 demonstrates the slight change in level 3 after the sensitivity test, and it can be seen that the attribute \"Comfort of stops\" gained one position and was ranked 5 th instead of the 6 th position, while the attribute \"Time to reach stops\" lost one position simultaneously, therefore, level 3 is considered more stable than level 2. \begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Criteria** & **Weight Scores** & **New Final Weight Scores** & **New Ranking** & **Old Ranking** \\ \hline Transport quality & 0.3353 & 0.35 & 1 & 1 \\ Service quality & 0.2629 & 0.26 & 2 & 2 \\ Fare & 0.2122 & 0.21 & 3 & 3 \\ Tractability & 0.1897 & 0.18 & 4 & 4 \\ \hline \hline \end{tabular}
\end{table} 
Table 7: Weight scores and ranking after the sensitivity check for level 1.