An integrated train scheduling and infrastructure development model in railway networks

Abstract

Abstract. The evaluation of the railway infrastructure capacity is an important task of railway companies. The goal is to nd the best infrastructure development plan for scheduling new train services. The question addressed by the present study is how the existing railway infrastructure can be upgraded to decrease the total delay of existing and new trains with minimum cost. To answer this question, a mixed-integer programming formulation is extended for the integrated train scheduling and infrastructure development problem. The train timetabling model deals with the optimum schedule of trains on a railway network and determines the best stop locations for both the technical and religious services. We developed two heuristics based on variable xing strategies to reduce the complexity of the problem. To evaluate the e ect of railway infrastructure development on the schedule of new trains, a sequential decomposition is adopted for Iranian railway network. The outcomes of the empirical analysis performed in this study allow to gain bene cial insights by identifying the bottleneck corridors. The result of the proposed methodology shows that it can signi cantly decrease the total delay of new trains with the most emphasis on the bottleneck sections.

A Two-Level Fuzzy Multi-Objective Design of ATO Driving Commands for Energy-Efficient Operation of Metropolitan Railway Lines

“…Other methods involve using the ε-constraint method and applying multi-objective optimization with distance-based methods [27]. Several mixed-integer programming models have been proposed to solve the scheduling problem for single-track railways [28], to integrate train-stop planning and timetabling in high-speed railways [29], to solve the timetable and train-set circulation plans in transition times for high-speed lines [30], to solve the problem of multiperiodic train timetabling and routing high-speed trains at stations [31], to integrate the line planning, timetable and rolling stock allocation problem [32], to integrate the timetable problem with passengers' train booking decisions [33], and to solve the schedules of trains on a railway network to determine the best stop locations for both technical and religious services [34]. Passenger waiting time has also been included in optimization [35] by treating passenger behaviour as deterministic.…”

Investigating the Mutual Feedback between Wind–Sand Fields and a Running Train on the Bridge–Road Transition Section of a Railway

“…The authors proposed to address the sudden change in the aerodynamic load of the train by increasing the wind-break wall or optimizing the train structure [16]. Shakibayifar M. found that the failure to implement relevant wind prevention and sand fixation measures in the bridge-road embankment transition sections of wind-sand areas can seriously affect the operation efficiency of high-speed trains and reduce the economy of railroad transportation [17].…”

Experimental Study and Phenomenological Laws of Some Nonlinear Behaviours of the Wheel–Rail Contact Associated with the Deshunting Phenomenon

“…In many countries, most railway signalling functions require knowledge of the occupancy status of portions of track called "zones". This parameter is necessary for the efficient and safe planning of trains [1]. In a zone, the traffic and presence of trains is detected by means of a "track circuit".…”