A Bi-Level Programming Model for the Road Network Planning in Economic Circle

2009 ◽  
Author(s):  
Fujun Yi ◽  
Wei Deng ◽  
Zhuping Zhou ◽  
Xi Cheng ◽  
Chen Wang
Keyword(s):  
Road Network ◽  
Programming Model ◽  
Network Planning ◽  
The Road

Reliabiliy of Road Network Layout and Optimization Methods Based on the Connectivity

2013 ◽  
Vol 779-780 ◽  
pp. 544-549
Author(s):  
Xiao Nian Sun ◽  
Shuo Chen ◽  
Yuan Yuan Mai ◽  
Xian Guang Wang
Keyword(s):  
Road Network ◽  
Network Reliability ◽  
Network Planning ◽  
Theoretical Method ◽  
Optimization Methods ◽  
Optimization Method ◽  
Construction Sequence ◽  
The Road ◽  
Network Layout ◽  
Highway Network

This paper conducts an in-depth research on applications reliability in highway network planning and optimization of construction sequence. It introduces the concept of reliability to the layout of the importance of the road network node and establishes a fairly comprehensive theoretical method of highway network planning based on the reliability from the aspects of the road network layout, evaluation, and construction sequence arrangements. Case study illustrates the proposed layout optimization method has achieved satisfactory results in the road network reliability analysis, displaying strong practical promotional value.

scholarly journals Resilience-Based Optimization of Postdisaster Restoration Strategy for Road Networks

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Xinhua Mao ◽  
Jibiao Zhou ◽  
Changwei Yuan ◽  
Dan Liu
Keyword(s):  
Travel Time ◽  
Road Network ◽  
Network Performance ◽  
Network Flows ◽  
Programming Model ◽  
Mixed Integer ◽  
Total System ◽  
Network Resilience ◽  
The Road ◽  
Restoration Strategies

This work proposes a framework for the optimization of postdisaster road network restoration strategies from a perspective of resilience. The network performance is evaluated by the total system travel time (TSTT). After the implementation of a postdisaster restoration schedule, the network flows in a certain period of days are on a disequilibrium state; thus, a link-based day-to-day traffic assignment model is employed to compute TSTT and simulate the traffic evolution. Two indicators are developed to assess the road network resilience, i.e., the resilience of performance loss and the resilience of recovery rapidity. The former is calculated based on TSTT, and the latter is computed according to the restoration makespan. Then, we formulate the restoration optimization problem as a resilience-based bi-objective mixed integer programming model aiming to maximize the network resilience. Due to the NP-hardness of the model, a genetic algorithm is developed to solve the model. Finally, a case study is conducted to demonstrate the effectiveness of the proposed method. The effects of key parameters including the number of work crews, travelers’ sensitivity to travel time, availability of budget, and decision makers’ preference on the values of the two objectives are investigated as well.

Importance of Road Network Layout and Optimization Methods Based on the Reliability

2013 ◽  
Vol 779-780 ◽  
pp. 1081-1088
Author(s):  
Xian Guang Wang ◽  
Xiao Nian Sun ◽  
Ming Wen Wang
Keyword(s):  
Road Network ◽  
Network Reliability ◽  
Network Planning ◽  
Theoretical Method ◽  
Optimization Methods ◽  
Optimization Method ◽  
Construction Sequence ◽  
The Road ◽  
Network Layout ◽  
Highway Network

This paper conducts an in-depth research on applications reliability in highway network planning and optimization of construction sequence. It introduces the concept of reliability to the layout of the importance of the road network node and establishes a fairly comprehensive theoretical method of highway network planning based on the reliability from the aspects of the road network layout, evaluation, and construction sequence arrangements. Case study illustrates the proposed layout optimization method has achieved satisfactory results in the road network reliability analysis, displaying strong practical promotional value.

Study on City Road Network Reserve Capacity under Ice and Snow Condition

2011 ◽  
Vol 97-98 ◽  
pp. 440-444
Author(s):  
Yan Li Ma ◽  
Li Fei Han ◽  
Yu Long Pei
Keyword(s):  
Road Network ◽  
Programming Model ◽  
User Equilibrium ◽  
Level Of Service ◽  
Reserve Capacity ◽  
Travel Time Reliability ◽  
The Road ◽  
Snow Condition ◽  
On The Road ◽  
Set Up

To study the reserve capacity of city road network under ice and snow condition，the upper programming model was build on the basis of travelers’ demands on level of service, which was incarnated on capacity of links, and travel time reliability, while user equilibrium (UE) was set up in the lower programming model. Then, sensitivity analysis was applied to solve the bi-level programming model under ice and snow condition. At last, one simulation network example was given to demonstrate the practicality of the given model, and the result showed that the ice and snow condition and the travelers’ demands on level of service had great impact on the road network reserve capacity. The methodology is useful and applicable to evaluate road network under ice and snow condition and lays the foundation for capacity reliability.

Park and Ride Facility Location Research of Rail Transit Based on Bi-Level Programming Model

2013 ◽  
Vol 779-780 ◽  
pp. 1156-1161
Author(s):  
Xian Guang Wang ◽  
Zhen Guo Liu ◽  
Yuan Yuan Mai ◽  
Xiao Nian Sun
Keyword(s):  
Facility Location ◽  
Road Network ◽  
Road Traffic ◽  
Programming Model ◽  
Central Area ◽  
User Equilibrium ◽  
The Road ◽  
Park And Ride ◽  
Assignment Method ◽  
The City

This paper seeks to build new park and ride facilities (including the location and size) as well as expand the old ones based on the super road network composed of the road network and mass rapid transit (MRT) network. Park and ride facility location model of the outskirts of the city is established grounded infusing path-based user equilibrium assignment model and multi-assignment method, which is based on minimal investments. The calculation results of the model show that park and ride facilities on the outskirts of the city can greatly reduce the road traffic in central area.

scholarly journals Dynamic Accessibility Analysis of Urban Road-to-Freeway Interchanges Based on Navigation Map Paths

2021 ◽  
Vol 13 (1) ◽  
pp. 372
Author(s):  
Yadan Yan ◽  
Tianzhao Guo ◽  
Dongwei Wang
Keyword(s):  
Road Network ◽  
Network Planning ◽  
Peak Period ◽  
Impedance Model ◽  
The Road ◽  
Planning And Design ◽  
Calculation Results ◽  
Travel Impedance ◽  
Surrounding Areas ◽  
The City

Accessibility is important for road network planning and design, especially the accessibility of freeway entrances and exits, which reflects the convenience of travelers using freeways and the rationality of the connection between urban roads and freeways. Based on the path information of navigation map software, a new comprehensive travel impedance model to dynamically analyze the accessibility of freeway entrances and exits was proposed. The dynamic accessibility of freeway entrances and exits in Zhengzhou was studied using the proposed comprehensive impedance model, and the calculation results were analyzed. The accessibility of freeway entrances and exits is characterized by dynamic changes; the accessibility during the off-peak evening period is the highest, while that during the morning peak period and evening peak period is lower. The results of the comprehensive impedance model are roughly consistent with reality. From a location perspective, regardless of the period of time, the accessibility of freeway entrances and exits in the central and surrounding areas of Zhengzhou is always at a lower level, and during the off-peak afternoon period, the accessibility of the eastern part of the city is notably higher than that of the western part. Additionally, the accessibility of freeway entrances and exits is closely related to the traffic status of the road network and the characteristics of regional land use. The information can provide feedback for planning road networks and provide a reference for road network planning and traffic facility design.

Plan Model for Airway Network Based on Bilevel Programming

2010 ◽  
Vol 143-144 ◽  
pp. 81-89
Author(s):  
Ming Zhang ◽  
Ting Ting Zhang ◽  
Song Chen Han
Keyword(s):  
Bilevel Programming ◽  
Road Network ◽  
Programming Model ◽  
Network Planning ◽  
Economic Benefits ◽  
Social Benefits ◽  
Cost Consideration ◽  
Flow Balance ◽  
Traffic Capacity ◽  
Bilevel Programming Model

Airway network planning has important value to ensure safe and decrease the flight cost. Consideration to economic benefits of the airlines and social benefits of the civil management department, airway network bilevel programming model and the constraints in the demand, traffic capacity, controller’s workload and traffic flow balance is proposed on the combination of road network planning with industrial characteristics of airway network planning. Based on genetic algorithm, the steps of airway network planning model is given. Finally, the model is verified by the sample's computation and analysis.

scholarly journals Planning Suitable Transport Networks for E-Scooters to Foster Micromobility Spreading

2021 ◽  
Vol 13 (20) ◽  
pp. 11422
Author(s):  
Martina Fazio ◽  
Nadia Giuffrida ◽  
Michela Le Pira ◽  
Giuseppe Inturri ◽  
Matteo Ignaccolo
Keyword(s):  
Urban Areas ◽  
Road Network ◽  
Southern Italy ◽  
Network Planning ◽  
Car Ownership ◽  
Sustainable Transport ◽  
The Road ◽  
Shared Mobility ◽  
Bike Sharing

Micromobility has a high potential to change mobility habits towards the use of sustainable transport modes. The shared mobility paradigm encourages the development of new mobility services, such as bike and e-scooter sharing, potentially reducing the need of car ownership, enlarging the accessibility of public transport and enriching the transport options needed to exploit Mobility as a Service solutions. While bike-sharing services have been used in urban areas for many years, shared e-scooter services (and private e-scooters) have been spreading only in the last few years. Due to the novelty of this mode, few attempts have been made for proper micromobility network planning. This paper proposes a multicriteria GIS-based analysis aimed at planning priority networks for e-scooters, focusing on safety, transport and land use characteristics. The case study is Catania, a medium-sized city in southern Italy, which suffers from a lack of adequate infrastructures for such sustainable modes of transport. By applying the methodology, it is possible to prioritise the road network elements that better fit the needs of e-scooters, thus paving the way for suitable infrastructures and network planning.

Sign in / Sign up

Export Citation Format

Share Document