Running Buffer Time Distribution Calculation Based on Delay Analysis in Mass Transit System

The most direct and effective measure to reduce the impact of delay is setting buffer time in train timetable. Based on the confirmation of total buffer time in mass rail transit line, this paper established a random integer programming model of running buffer time distribution, aiming at minimum total arriving delay time in the objective function. The model obtained running buffer time calculation formulas under three kinds of conditions, including total buffer time is equal to total delay time, total buffer time is less than total delay time, and total buffer time is more than total delay time. This model is finally validated through a calculation example. The results of this research can instruct the arrangement of train timetable and improve the reliability of train timetable.