1. Comfort
2. Cleanness
3. Quietness
4. Availability of seats
5. Safety on board
6. Security on board
7. Convenience of accessing to service
8. Travel cost
9. Travel time
10. Waiting time
11. Punctuality
12. Service frequency
13. Number of transfers
14. Modernity of vehicles and applications
15. Driver behaviors
16. Conductor behaviors
17. Sufficiency of buses
18. Coverage of service route