scholarly journals Research on Optimization of Urban Public Transport Network Based on Complex Network Theory

Symmetry ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 2436
Author(s):  
Zhongyi Lin ◽  
Yang Cao ◽  
Huasheng Liu ◽  
Jin Li ◽  
Shuzhi Zhao
Keyword(s):  
Public Transportation ◽  
Solution Method ◽  
Public Transit ◽  
Network Efficiency ◽  
Transit Network ◽  
Complex Network Theory ◽  
The Public ◽  
Passenger Travel ◽  
Public Transportation System ◽  
Travel Impedance

The urban public transportation system is an important part of urban transportation, and the rationality of public transportation routes layout plays a vital role in the transportation of the city. Improving the efficiency of public transportation can have a positive impact on the operation of the public transportation system. This paper uses complex network theory and the symmetry of the up and down bus routes and stations to establish an urban public transit network model and calculates the probability of passengers choosing different routes in the public transit network according to passenger travel impedance. Based on passenger travel impedance, travel path probability and passenger travel demand, the links are weighed, and the network efficiency calculation method is improved. Finally, the public transit network optimization model was established with network efficiency as the objective function and solved by the ant colony algorithm. In order to verify the effectiveness of the model and the solution method, this paper selects areas in Nanguan District of Changchun City for example analysis. The result shows that the efficiency of the optimized network is 8.5% higher than that of the original network, which proves the feasibility of the optimized model and solution method.

Survivability of public transit network based on network structure entropy

2015 ◽  
Vol 26 (09) ◽  
pp. 1550104 ◽  
Author(s):  
Bai-Bai Fu ◽  
Lin Zhang ◽  
Shu-Bin Li ◽  
Yun-Xuan Li
Keyword(s):  
Network Model ◽  
Network Structure ◽  
Public Transit ◽  
Small World ◽  
Clustering Coefficient ◽  
Statistical Characteristics ◽  
Network Efficiency ◽  
Transit Network ◽  
Scale Free ◽  
The Public

In this work, we have collected 195 bus routes and 1433 bus stations of Jinan city as sample date to build up the public transit geospatial network model by applying space L method, until May 2014. Then, by analyzing the topological properties of public transit geospatial network model, which include degree and degree distribution, average shortest path length, clustering coefficient and betweenness, we get the conclusion that public transit network is a typical complex network with scale-free and small-world characteristics. Furthermore, in order to analyze the survivability of public transit network, we define new network structure entropy based on betweenness importance, and prove its correctness by giving that the new network structure entropy has the same statistical characteristics with network efficiency. Finally, the "inflexion zone" is discovered, which can be taken as the momentous indicator to determine the public transit network failure.

scholarly journals Passenger Satisfaction Evaluation of Public Transportation Using Pythagorean Fuzzy MULTIMOORA Method under Large Group Environment

2020 ◽  
Vol 12 (12) ◽  
pp. 4996 ◽  
Author(s):  
Xu-Hui Li ◽  
Lin Huang ◽  
Qiang Li ◽  
Hu-Chen Liu
Keyword(s):  
Public Transportation ◽  
Transportation System ◽  
New Method ◽  
Rail Transit ◽  
Transit Network ◽  
The Public ◽  
Passenger Satisfaction ◽  
Group Environment ◽  
Public Transportation System ◽  
Satisfaction Evaluation

Passenger satisfaction is an important factor that affects the choice of travel modes for municipalities, especially in big cities. This evaluation is an important task for managers when they are considering improving the competitiveness of the public transportation system. However, passenger satisfaction evaluation is difficult as the information provided by passengers is often vague, imprecise, and uncertain. This paper aims to propose a new method, using Pythagorean fuzzy sets and multi-objective optimization by a ratio analysis plus full multiplicative form method (MULTIMOORA), to evaluate the passenger satisfaction level of the public transportation system under large group environment. The former is employed to represent the satisfaction assessments of rail transit network provided by passengers. The latter is extended and used to determine the passenger satisfaction levels of rail transit lines. In addition, a combination weighting method is suggested to compute the relative weights of evaluation criteria. A case study of the rail transit network in Shanghai is provided to demonstrate the effectiveness of the proposed passenger satisfaction evaluation method. The result shows that the new method proposed in this study can not only model passengers’ satisfaction evaluation information with more uncertainties, but also determine more reasonable and credible satisfaction levels of rail transit lines.

scholarly journals Supervision of the Default Risk of Online Car-Hailing Platform from an Evolutionary Game Perspective

2021 ◽  
Vol 13 (2) ◽  
pp. 555
Author(s):  
Zhicheng Weng ◽  
Pinliang Luo
Keyword(s):  
Public Transportation ◽  
Default Risk ◽  
Control Mechanism ◽  
Evolutionary Game ◽  
Credit System ◽  
Credit Constraint ◽  
The Public ◽  
Supervision Mode ◽  
Public Transportation System ◽  
Internal Supervision

Online car-hailing services are becoming a key component of the public transportation system, despite there being some certain risks, especially default risk. Turning to the evolutionary game method, this research constructed an evolutionary game model of online car-hailing platform, and then analyzed the equilibrium state of three scenarios (i.e., no supervision, internal supervision of platform enterprises, and external supervision of regulators), followed by carrying out a simulation. The results showed that to realize the evolution stability strategies (ESS) of default risk control, a strong credit constraint or the establishment of a coordinated supervision mode with appropriate intensity are needed. On this basis, this research puts forward the coordinated “platform enterprise + regulator” supervision mode, as well as the following four specific strategies: Promoting the construction of a credit system, strengthening the construction of laws and regulations, establishing a service process control mechanism, and introducing innovative regulatory means.

scholarly journals Public transit network planning in small cites considering safety and convenience

2020 ◽  
Vol 12 (1) ◽  
pp. 168781402090235 ◽  
Author(s):  
Changxi Ma ◽  
Dong Yang
Keyword(s):  
Traffic Congestion ◽  
Public Transit ◽  
Network Planning ◽  
Optimization Method ◽  
Transit Oriented Development ◽  
Transit Planning ◽  
Transit Network ◽  
The Public ◽  
Traffic Generation ◽  
Interval Value

Scientific and rational public transit network planning, not only can effectively alleviate city traffic congestion, but also can reduce the risk of accidents. First, based on the data of residents’ travel survey, this article employs the multiple regression method to forecast the traffic generation and adopts the double-constrained gravity model to forecast the residents’ travel distribution of small cites. Second, by aiming at public transit planning objectives, the unsafe roads for public transit are screened, and the public transit trip-mode sharing rate is set as the interval value. According to the interval value, the public transit trip-mode sharing rate is divided into three cases, and the three alternatives of public transit network are calculated based on the network optimization method and the public transit-oriented development model. Next, the alternatives are evaluated by the set pair analysis method, and the optimal scheme is selected. Finally, this article takes the public transit network planning of Huaiyuan County in Anhui Province as an example, and the results show the proposed method is feasible.

Strengthening innovative supply chain in the public transportation system of Curitiba through relational capabilities

2019 ◽  
Vol 8 (1) ◽  
pp. 39
Author(s):  
Andrea Paula Segatto ◽  
Thálita Anny Estefanuto Orsiolli ◽  
Luiz Aurélio Virtuoso ◽  
Fernanda Salvador Alves ◽  
Ananda Silva Singh ◽  
...  
Keyword(s):  
Supply Chain ◽  
Public Transportation ◽  
Transportation System ◽  
The Public ◽  
Public Transportation System ◽  
Relational Capabilities

Bus networks as graphs: new connectivity indicators with operational characteristics

2014 ◽  
Vol 41 (9) ◽  
pp. 788-799 ◽  
Author(s):  
Liliana Quintero-Cano ◽  
Mohamed Wahba ◽  
Tarek Sayed
Keyword(s):  
Public Transportation ◽  
Network Connectivity ◽  
Traffic Analysis ◽  
Coverage Area ◽  
Transit Network ◽  
Network Characteristics ◽  
Operational Characteristics ◽  
Public Transportation System ◽  
Bus Networks ◽  
Transit Agencies

A transit network, visualized as a graph, can be evaluated using indicators such as connectivity, coverage, directness, and complexity, among others, based on the relationships between network elements. This study focuses on the analysis of interconnected and operationally complicated bus networks, a shortcoming of existing approaches tailored to simpler, metro networks. A new procedure is proposed for drawing bus networks as graphs, by disaggregating them into sub-networks at the traffic analysis zone level. As well, improved network connectivity indicators are proposed which incorporate the influence of bus operational characteristics. The effect of bus route transfers is analyzed by introducing intermediate walking transfer edges. The contribution of this research will provide transit agencies with quantitative measures to analyze the network characteristics and the related operational attributes at a zonal sub-network level across the agency’s coverage area. The proposed methodology was demonstrated by applying it to the Greater Vancouver Regional District public transportation system.

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