Open AccessA Method for Enhancing Global Safety of Regional Rail Transit Based on Coordinative Optimization of Passenger Flow Assignment and Train Scheduling
Author(s) -
Mengyu Zhang,
Wei Dong,
Xuejun Sun,
Yindong Ji
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1624/4/042036
Subject(s) - rail transit , urban rail transit , transport engineering , monorail , scheduling (production processes) , flow network , computer science , engineering , civil engineering , operations management , mathematical optimization , mathematics
Regional rail transit is a kind of comprehensive railway transportation system, which originates from the demand of economic integration of city groups and contains various kinds of sub-transportation systems such as high speed railway, inter-city railway, subway and monorail. Due to the deficiency of coordination between different kinds of transportation systems, the global risk of regional rail transit network greatly increases. Therefore, it is urgent to evaluate the rail transit network safety from a global perspective and enhance the safety through coordinative optimization. To address this problem, a method to evaluate the global safety of regional rail transit system based on passenger flow demand load is proposed, a mathematical model to minimize the global risk of rail transit network is constructed, and the global safety is enhanced by coordinative optimization of passenger flow assignment and train scheduling. An example on the regional rail system in Chengdu-Chongqing district validates the effectiveness of the proposed method. Compared with the method in the literature where only passenger flow assignment is considered, the example shows that the proposed approach can bring a further 10% decrease of the global risk of rail transit network.