Evaluation of 3D-Traffic Accessibility Based on Space Syntax: A Case Study of Xi'an Subways

2012 ◽  
Vol 157-158 ◽  
pp. 338-343
Author(s):  
Fang Xiao Zhou ◽  
Chang Hua Li
Keyword(s):  
Rapid Development ◽  
Space Syntax ◽  
Urban Traffic ◽  
Traffic System ◽  
Urbanization In China ◽  
Xi’An City ◽  
Relation Matrix

With the rapid development of urbanization in China, many cities begin to build subway to relieve the increasing traffic pressure. How to evaluate effect of subway on existing urban traffic system interests urban planners. Space Syntax is the most widely used theory for calculating accessibility measures. However, as the basis model of space syntax, axial-map is only aimed at 2D traffic system, not suitable for 3D situation. Based on natural-street map, a method is proposed which treats stations as junctions between subway and streets and rebuilds relation matrix to calculate accessibility. Using the method, we analyze a case study of Xi’an city in china. It is found out that subway can change accessibility to some extent depended on routine of subway and site of station, which implies it reasonable to layout subway along streets with high integration.

scholarly journals Potential of Private Autonomous Vehicles for Parcel Delivery

2020 ◽  
Vol 2674 (11) ◽  
pp. 520-531
Author(s):  
Tilmann Schlenther ◽  
Kai Martins-Turner ◽  
Joschka Felix Bischoff ◽  
Kai Nagel
Keyword(s):  
Service Provider ◽  
Autonomous Vehicles ◽  
Urban Traffic ◽  
Vehicle Miles Traveled ◽  
Traffic System ◽  
Autonomous Cars ◽  
Multi Agent ◽  
Wide Scale ◽  
Operator Behavior

Using the same vehicles for both passenger and freight transport, to increase vehicle occupancy and decrease their number, is an idea that drives transport planners and is also being addressed by manufacturers. This paper proposes a methodology to simulate the behavior of such vehicles within an urban traffic system and evaluate their performance. The aim is to investigate the impacts of resignation from fleet ownership by a transport service company (TSC) operating on a city-wide scale. In the simulation, the service provider hires private autonomous cars for tour performance. Based on assumptions concerning the operation of such vehicles and TSCs, the software Multi-Agent Transport Simulation (MATSim) is extended to model vehicle and operator behavior. The proposed framework is applied to a case study of a parcel delivery service in Berlin serving a synthetic parcel demand. Results suggest that the vehicle miles traveled for freight purposes increase because of additional access and egress trips. Moreover, the number of vehicles en route is higher throughout the day. The lowering of driver costs can reduce the costs of the operator by approximately 74.5%. If the service provider additionally considers the resignation from fleet ownership, it might lower the operation cost by another 10%, not taking into account the costs of system transfer or risks like vehicle non-availability. From an economic perspective, the reduction of the overall number of vehicles in the system seems to be beneficial.

Planning of Slow Traffic System Combining Greenway from Bottom-Up Perspective: A Case Study of Ersha Island (Guangzhou)

2014 ◽  
Vol 971-973 ◽  
pp. 2208-2212
Author(s):  
Hong Duo Zhuo ◽  
Juan Yu Wu
Keyword(s):  
Traffic Congestion ◽  
System Development ◽  
Rapid Development ◽  
Central City ◽  
Urban Traffic ◽  
Actual Case ◽  
Bottom Up ◽  
Traffic System ◽  
Detail Design ◽  
Save Energy

Under the situation of rapid development of urban vehicles, worsening traffic congestion and the energy shortage, slow traffic system reflects concept of sustainable development of people-oriented and green environmental protection which is attracting more and more attention and recognition from the citizens. The efficient slow traffic system can not only save energy and alleviate the urban traffic congestion, but also improve the comfort and security of the citizens and guide them to form a new concept of green travel. In recent years, Guangzhou has set up the slow traffic system which based on the development of the Asian Games’ greenway, but on the detail design and user’s experience is questionable. This article will be based on the analysis and summary of the existing domestic and foreign slow system development model and the actual case studies. Then draw lessons from the experience, study the case of Ersha Island and combine with existing design of the greenway in Guangzhou. Use the bottom-up perspective to explore the slow traffic system design in central city of Guangzhou. In the future development, we should optimize for the detailed design in slow traffic system construction as well as the relevant planning and policy, and finally to promote the development of slow traffic system.

scholarly journals Accessibility Evaluation of High Order Urban Hospitals for the Elderly: A Case Study of First-Level Hospitals in Xi’an, China

Symmetry ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 489 ◽  
Author(s):  
Ke Ruan ◽  
Qi Zhang
Keyword(s):  
Public Transportation ◽  
Evaluation Model ◽  
The Elderly ◽  
High Order ◽  
Urban Traffic ◽  
Gis Technology ◽  
Urban Hospitals ◽  
Accessibility Evaluation ◽  
Xi’An City

With reference to the hospitalizing trips made by the elderly, the impedance of these trips that require the use of public transportation, is introduced. An evaluation model that can accurately detect the accessibility of high order urban hospitals (HOUHs) for the elderly is established with the help of Geographic Information System (GIS) technology. Furthermore, the established model is employed to detect the accessibility of first-level hospitals in Xi’an City. Results showed that the traffic connection between hospitals and their service objects is an important factor for the feasibility and effectiveness of an accessibility evaluation. It is suggested that special evaluations of the accessibility of hospitals for the elderly are needed to achieve the human-oriented goal of urban traffic planning. The well-served spatial pattern of hospitalizing accessibility for the elderly in Xi’an City has been established in recent years because of the strategies for public transit metropolis. The accessibility constraints can be divided into three types: The imprisonment, the antagonism and the running-in, for which the corresponding countermeasures to settle the low accessibility of hospitals will be taken by the planning administration. Attention is paid to specific population groups during their hospitalizing trips in the accessibility research, which is beneficial for enabling the improvement of the current traditional method which is mainly based on travel facilities.

scholarly journals Connectivity Contribution to Urban Hub Network Based on Super Network Theory – Case Study of Beijing

2021 ◽  
Vol 33 (1) ◽  
pp. 35-47
Author(s):  
Guang Yuan ◽  
Dewen Kong ◽  
Lishan Sun ◽  
Wei Luo ◽  
Yan Xu
Keyword(s):  
Network Theory ◽  
Rapid Development ◽  
Urban Transport ◽  
Passenger Transportation ◽  
Topological Features ◽  
Multi Level ◽  
Transport Modes ◽  
Urbanization In China ◽  
New Perspective

With the rapid development of urbanization in China, the number of travel modes and urban passenger transportation hubs has been increasing, gradually forming multi-level and multi-attribute transport hub networks in the cities. At the same time, Super Network Theory (SNT) has advantages in displaying the multi-layer transport hubs. The aim of this paper is to provide a new perspective to study connectivity contribution of potential hubs. Urban transport hubs are ranked through topological features based on Hub Super Network (HSN). This paper proposes two indexes based on Super-Edge (SE), Zero Hub Degree of SE (ZHDoSE) and a number of shared SEes (NSSE), respectively. Then, a case study was conducted in Beijing, which considers four combinations to study the influence of transport modes and subway lines on connectivity. The results show that no-normalization strengthens the contribution of transport modes and subway lines on connectivity. Besides, the transport mode contributes a lot to the connectivity. However, elements normalization strengthens the subway lines under ZHDoSE reciprocal. In addition, various weights of ZHDoSE and NSSE have different influences on the recognition results of SEes in HSN.  

scholarly journals Study on Fine Design Method of Intersection under Slow Traffic System

2020 ◽  
Vol 9 (1) ◽  
pp. 1-8
Author(s):  
Zihan Wang ◽  
Keyword(s):  
Motor Vehicle ◽  
Road Traffic ◽  
Design Method ◽  
Rapid Development ◽  
Urban Traffic ◽  
Traffic System ◽  
Traffic Intersection ◽  
Organizational Experience ◽  
Great Progress ◽  
Intersection Design

In the process of rapid development of urban traffic, Chinese intersections have made great progress in meeting the basic needs of urban road traffic, but the intersection design method under the slow traffic system is imperfect.First of all, by analyzing the problems of walking and non-motor vehicle intersections in domestic cities, and comparing and analyzing the excellent foreign cases, the basic idea of fine intersection design is constructed.Finally, take the slow traffic intersection as an example, from the perspective of the traffic individual analysis, the fine design of the intersection under the slow traffic system.Drawing on the organizational experience of the design of foreign intersections under the slow traffic system, it proposes the fine design strategy of urban intersections in China.

Urban Traffic Modeling and Simulation: Moroccan Capital Case Study

2018 ◽  
Author(s):  
Aboutaib Brahim ◽  
Bahili Lahoucine ◽  
Fonlupt Cyril ◽  
Virginie Marion ◽  
Sebastiaan Verelst
Keyword(s):  
Modeling And Simulation ◽  
Urban Traffic ◽  
Traffic Modeling ◽  
Capital Case

scholarly journals Analysis of the System of Controlling Paid Parking Zones

2021 ◽  
Vol 13 (8) ◽  
pp. 4211
Author(s):  
Maciej Kozłowski ◽  
Andrzej Czerepicki ◽  
Piotr Jaskowski ◽  
Kamil Aniszewski
Keyword(s):  
Control System ◽  
Smart City ◽  
Measurement Errors ◽  
Fundamental Problem ◽  
Urban Traffic ◽  
Statistical Dependence ◽  
Actual State ◽  
Event Time ◽  
Operational Data

Urban traffic can be curbed in various ways, for instance, by introducing paid unguarded parking zones (PUPZ). The operational functionality of this system depends on whether or not the various system features used to document parking cases function properly, including those which enable positioning of vehicles parked in the PUPZ, recognition of plate numbers, event time recording, and the correct anonymisation of persons and other vehicles. The most fundamental problem of this system is its reliability, understood as the conformity of control results with the actual state of matters. This characteristic can be studied empirically, and this article addresses the methodology proposed for such an examination, discussed against a case study. The authors have analysed the statistical dependence of the e-control system’s measurement errors based on operational data. The results of this analysis confirm the rationale behind the deployment of the e-control system under the implementation of the smart city concept in Warsaw.

Sign in / Sign up

Export Citation Format

Share Document