The theory of railway scheduling is discussed. It involves the planning of timetables in relation to the available resources, and longer term planning for future requirements. Infrastructure characteristics, infrastructure availability, capabilities of rolling stock, and rolling stockt/station/staff availability must be taken into account. While staff availability may be planned in advance, precise rolling stock availability may be determined on the day. The avoidance of conflict between trains and the adherence of junction margin rules is also required. Key issues include the need to deliver solutions in a reasonable time (most timetable planning begins 12-15 months before the start date and shorter lead times are required), the need for robust solutions which can accommodate minor perturbations, and the need to develop more optimum solutions. The development of software for data management and simulated testing of timetables is discussed.
Abstract