“…Strategic and tactical maintenance planning of railway infrastructures (Su et al, 2017;Xie et al, 2016), rail inspection scheduling (Lannez et al, 2015;Osman et al, 2017;Peng et al, 2013), as well as the coordination of train scheduling and infrastructure maintenance (D'Ariano et al, 2017;Forsgren et al, 2013;Lidén and Joborn, 2017;Luan et al, 2017;Vansteenwegen et al, 2016), have been widely studied in the literature. See Lidén (2015) for a more detailed review of the rail infrastructure maintenance planning problems. However, the study and analysis of the rail track maintenance scheduling problem under variable productivities are still lacking.…”