| 
 | t | Degrees of Freedom | Significant Level | Difference from the mean | Confidence interval 95% | |
| Upper limit | Lower limit | |||||
| Environmental and safety indicator | 9.503 | 119 | 0.000 | 0.65000 | 0.5146 | 0.7854 | 
| Assistance in reducing congestion indicator | 8.708 | 119 | 0.000 | 0.60625 | 0.4684 | 0.7441 | 
| Attractive public transport indicator | 15.147 | 119 | 0.000 | 0.89583 | 0.7787 | 1.0129 |