Robusta semi-styva tidtabeller under dynamisk och osäker efterfrågan (ROSSO)

Delays in train traffic lead to reduced demand and societal costs. One way to improve punctuality, and thereby increase travel demand, is to make the timetable more robust. However, this may lead to increased travel times, which in turn may have a negative effect on travel demand and the societal benefit. The methods that exist in the literature for robust timetabling are also not fully applicable to Swedish conditions as they assume that the traffic is either periodic or non-periodic.

This project therefore has two main objectives. The first goal is to formulate a model for robust semi-periodic timetabling (schedules with both periodic, near-periodic, and non-periodic traffic). The second goal is to formulate a model to calculate the societal benefit of improving the robustness of timetables where, in particular, the cost of longer journey times is set against the benefit of better punctuality.