| Now days, transportation services have been . developed fastly, whether air transportation, land transportation or see transportation. There is a high competition among them. So that an enterprise which involver in a transportation business must improves its service to a maximum level, to make the consumers want to use that transportation service. Expecially land transportation, there are many choice for the consumers i.e. train, bus, travel, biro and night bus: So the night bus must takes interest in the factors which coherent in its bisnis, to assure the safety of the passenger and employees, and they want to use the same service many times. |