Influence of Vertical Skylight on Carrying Capacity of Railway Lines

Based on the analysis of the structure of train diagrams, freight train painting schemes in influencing timeslice before and after a vertical skylight were discussed, a mathematics model was proposed for the deduction of carrying capacity of railway lines resulted from vertical skylights. The analysis of this model shows that the deduction of carrying capacity of a railway line is directly proportional to the time span of vertical skylights and inversely proportional to the interval between freight trains.