摘要:AbstractPlanning the operations of Renfe Operadora trains on Adif's (Spanish) railway network is very complex. The reasons are the coexistence of two track gauges, two kinds of electrification systems and five types of signaling systems; together with fixed and variable gauge rolling stock, sometimes able to run under different types of electrification and signaling systems. There is even a multiple unit hybrid series (730). The authors have developed a microscopic simulation computer package that calculates timings and minimal paths, and estimates costs, consumptions and emissions. The package is topology-independent and can perform computations for any type of trains. We shall focus here on its use, the structure of its input files and its possibilities.