Modified stochastic user-equilibrium assignment algorithm for urban rail transit under network operation

Zhu, Wei; Hu, Hao; Xu, Ruihua; Li, Hong

doi:10.1007/s11771-013-1811-5

Cited by 8 publications

(7 citation statements)

References 12 publications

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“…The traffic assignment model should be applied to determine the passenger flow via stations. Some studies allocate passenger trips on a URT network considering the constrained capacity caused by the train, platform and transfer corridor [24,25], while others employ a user stochastic equilibrium model to allocate passenger trips on the network [26,27]. In this paper, the RAPV of stations can be calculated simply by determining the passenger flow via stations.…”

Section: Identifying Important Stationsmentioning

confidence: 99%

Connectivity Reliability on an Urban Rail Transit Network from the Perspective of Passenger Travel

et al. 2019

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Under the background of urbanization and the rapid development of urban rail transit (URT), serious attention has been focused on URT network reliability in recent years. In this work, in order to measure network reliability, three indicators are constructed based on passengers' tolerable travel paths, passenger travel efficiency and passenger travel realization on a URT network. The passenger tolerability coefficient, which is the ratio of passengers' tolerable travel time to the shortest possible travel time, is proposed and added to the indicators. It reflects passengers' behavior with respect to choice of travel paths. The ratio of affected passenger volume (RAPV) is proposed to identify important stations. Finally, the connectivity reliability of Wuhan's subway network is analyzed by simulating attacks on stations. The results show that the degree centrality, betweenness centrality and RAPV indicators of stations can effectively identify the important stations that have a significant impact on the connectivity reliability of the network. In particular, the RAPV indicator effectively identifies stations that have the greatest influence on passenger travel realization. The connectivity reliability of Wuhan's subway network is sensitive to passenger tolerability coefficient, and reliability is greater during non-peak hours than during peak hours. In addition, the stations that are important to the connectivity reliability of the Wuhan subway have two features, i.e., they are located at the center of the city, and they are important for connecting subgraphs of the network.

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Section: Identifying Important Stationsmentioning

confidence: 99%

Connectivity Reliability on an Urban Rail Transit Network from the Perspective of Passenger Travel

et al. 2019

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“…For example, Si et al [11] presented an urban transit assignment model based on augmented network with both the in-vehicle congestion and transfer congestion and developed an improved shortest path-based algorithm to solve it. Zhu et al [12] presented a modified stochastic user-equilibrium assignment algorithm to calculate the passenger flow distribution for network operations. Though the impacts of in-vehicle congestion on passengers began to be considered, how to mitigate in-vehicle congestion is not the focus of these studies.…”

Section: Literature Reviewmentioning

confidence: 99%

“…However, the K-shortest route approach only adapts well to the condition of K ≤ 3 due to the repeated iterations, and Dial algorithm would skip over some routes when the metro system has a loop [11,18,19]. Hence, a deletion algorithm (DA) based on the depth-first traversal (DFT) method is used to find the set of effective routes for any given OD pair, as applied in [12,19]. The core feature of DA is to find the next alternative shortest route by deleting a link on the existing shortest route in the directed graph and searching for a replacement link.…”

Section: Set Of Effective Alternative Routesmentioning

confidence: 99%

Service-Oriented Load Balancing Approach to Alleviating Peak-Hour Congestion in a Metro Network Based on Multi-Path Accessibility

Huang

Fan

et al. 2019

Sustainability

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To further improve the service quality and reduce safety risks in current congested metro systems during peak hours, this paper presents a load balancing (LB) approach so that available capacity can be utilized more effectively in order to alleviate peak hour congestion. A set of under-utilized yet effective alternative routes were searched using a deletion algorithm (DA) in order to share the passenger loads on overcrowded metro line segments. An optimization model was constructed based on an improved route generalized time utility function considering the penalties of both in-vehicle congestion and transfers. A detailed load balancing solution was generated based on the proposed algorithm. A real-world example of three overloaded metro line segments in the Shanghai metro network were selected and used to verify the feasibility and validity of the developed load balancing method. The results show that the load balancing method can effectively reduce the overcrowding situation to a great extent. Finally, two prospective inducing schemes are discussed to help implement the load balancing solution in the actual metro system in an efficient and effective manner.

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“…Zhu [5] used the method of successive averages to solve the stochastic user-equilibrium problem. He/she described the impact of congestion on passengers' route choices.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Quite a few studies [5][6][7][8] have focused on passenger flow assignment in URT network. User-equilibrium model and discrete choice model are the most commonly used methods in passenger flow assignment.…”

Section: Introductionmentioning

confidence: 99%

Development of a Behavior-Based Passenger Flow Assignment Model for Urban Rail Transit in Section Interruption Circumstance

Teng

Liu

2015

Urban Rail Transit

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At present, the urban rail transit (URT) system has achieved network operation in many major cities of China. But, little attention has been given to the vulnerability of the URT system. The purpose of this study is to assign the passenger flow under the condition of section interruption in URT system. Two surveys (a passenger behavior survey and a stated preference survey) were conducted and a multinomial logit model was developed. The results show that although the first choice of passengers in emergency situation is to stay in URT system by a circuitous way, more than half of the respondents express interest in the temporary shuttle bus. For the temporary shuttle bus, the sensitivity analysis show that the relative speed is more important than crowding degree for passengers. The significant variables mostly fall in the personal attributes such as income, gender, age, etc. The impacts of trip feature factors are similar to the previous research in normal situations. These results provide basic support for passenger flow assignment at the shuttle bus level and reducing the risk of crowding at some special stations. Moreover, it is also good for reducing passenger delay and recovering the trip.

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Modified stochastic user-equilibrium assignment algorithm for urban rail transit under network operation

Cited by 8 publications

References 12 publications

Connectivity Reliability on an Urban Rail Transit Network from the Perspective of Passenger Travel

Connectivity Reliability on an Urban Rail Transit Network from the Perspective of Passenger Travel

Service-Oriented Load Balancing Approach to Alleviating Peak-Hour Congestion in a Metro Network Based on Multi-Path Accessibility

Development of a Behavior-Based Passenger Flow Assignment Model for Urban Rail Transit in Section Interruption Circumstance

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