Railway scheduling is a complex task of rail operators that involves the generation of a conflict-free train timetable. This paper presents a discrete-event simulation-based optimization approach for solving the train timetabling problem to minimize total weighted unplanned stop time in a hybrid single and double track railway networks. The designed simulation model is used as a platform for ge...

considering the large amount of investment in railway transportation systems, effective use of resources is highly important. typically, in order to utilize the line capacity, train scheduling plays a substantial role and thus attracts lots of attention all over the world. various train-scheduling models are introduced, according to different conditions of different countries. however, for iran...

We study the joint problem of scheduling passenger and freight trains for complex railway networks, where the objective is to minimize the tardiness of passenger trains at station stops and the delay of freight trains. We model the problem as a mixed integer program and propose a twostep decomposition heuristic to solve the problem. The heuristic first vertically decomposes the train schedules ...

The locomotive assignment and the freight train scheduling are important problems in railway transportation. Freight cars are coupled to form a freight rake. The freight rake becomes a train when a locomotive is coupled to it. The locomotive assignment problem assigns locomotives to a set of freight rakes in a way that, with minimum locomotive deadheading time, rake coupling delay and locomotiv...

Attractive train schedules are quite important for the success of public rail transport. We consider schedules which are repeated after some xed time period. Periodicity is a well accepted, convenient attribute of all major railroad systems. Since trains share the public railroad network, we have to handle many connicting demands. Increasing competition from transportation alternatives as well ...

In this work we consider the Single Track Train Scheduling Problem. The problem consists in scheduling a set of trains from opposite sides along a single track. The track passes intermediate stations and the trains are only allowed to pass each other at those stations. This problem has a close relation to minimizing the makespan in a job shop scheduling problem with two counter routes and no pr...

For some real world railroad networks, we minimize certain operational cost of train schedules which allow different train types of diverse speed and cost. We use a mixed integer linear programming approach to model this train scheduling problem. For practical problem sizes, it is impossible to directly solve the resulting MIPs within a reasonable amount of time. However, a decomposition approa...