In Trenton, there are organizations that are responsible for operating bus transportation system and bus lines. Generally a commercial bus in Trenton operates on a daily schedule and travels through a fixed route, and each passenger pays a fixed fare. The organization that is responsible for these bus lines should portray a passenger-oriented approach in the construction of a global line network along with a fixed timetable. In last few years it has been observed that the need for a passenger-friendly bus line planning system has increased. Bus line planning in Trenton is generally described to comprise of four phases; global line network planning, setting timetables, vehicle scheduling and crew scheduling.