ABSTRACT

Subsequent to the overview and methods for designing routes at the network level, the next two chapters deal with specific design features at the route level. This present chapter presents a set of procedures to design transit timetables efficiently with trips that are initiated beyond the route departure point and/or terminated before the route arrival point. Such trips are called short-turn trips. In practice (see Chapter 4), transit frequency is determined at the heaviest load-route segment, whereas the operation at other segments may be inefficient because of situations, characterized by empty seats. Transit planners attempt to overcome this problem by manually constructing short-turn trips with the objective of reducing the number of vehicles required to carry out the transit timetable. The purpose of this chapter is to improve and automate this task.