نتایج جستجو برای: urban transportation network

تعداد نتایج: 875965  

2009
LOUKAS DIMITRIOU

Urban areas are facing an enormous pressure for mobility opportunities, a phenomenon closely related to economic activity and urban welfare growth. The development of urban transportation networks is a vital component in the performance of metropolitan complexes, where multiple policies can be employed and multiple objectives is urged to be met. In this paper, a policydriven approach will be pr...

2012
Bo Zhang Tao Yao Terry L. Friesz Hongcheng Liu

In this paper we propose a dynamic Stackelberg game-theoretic model for urban freight transportation planning which is able to characterize the interaction between freight and personal transportation in an urban area. The problem is formulated as a bi-level dynamic mathematical program with equilibrium constraints (MPEC) which belongs to a class of computationally challenging problems. The lowe...

Journal: :Journal of Geographical Systems 1999
Jinsoo You Tschangho John Kim

The ceaselessly increasing number of trips on urban highways and major arterial roads have caused serious congestion and air pollution problems. Thus many transportation agencies have persevered in their efforts not only to alleviate such problems, but also to minimize social costs. However, the complex nature of such problems has strongly hindered transportation agencies’ ability to consider a...

Journal: :Computers, Environment and Urban Systems 2014
Kaveh Shahabi John P. Wilson

We propose a new method to perform urban routing efficiently under capacity constraints. This new method helps with evacuation routing as well as other urban transportation challenges. Traditionally, simulation software or shortest path routing combined with zonal scheduling have been used to solve routing problems. Our method utilizes a state-of-the-art algorithm to connect each source node to...

2016
Philip S Chodrow Zeyad Al-Awwad Shan Jiang Marta C González

Urban transportation systems are multimodal, sociotechnical systems; however, while their multimodal aspect has received extensive attention in recent literature on multiplex networks, their sociotechnical aspect has been largely neglected. We present the first study of an urban transportation system using multiplex network analysis and validated Origin-Destination travel demand, with Riyadh's ...

Journal: :J. Artif. Intell. Res. 2012
Matteo Vasirani Sascha Ossowski

Traffic congestion in urban road networks is a costly problem that affects all major cities in developed countries. To tackle this problem, it is possible (i) to act on the supply side, increasing the number of roads or lanes in a network, (ii) to reduce the demand, restricting the access to urban areas at specific hours or to specific vehicles, or (iii) to improve the efficiency of the existin...

Journal: :IJNCR 2011
Andrew Adamatzky Selim G. Akl

Slime mould Physarum polycephalum builds up sophisticated networks to transport nutrients between distant part of its extended body. The slime mould’s protoplasmic network is optimised for maximum coverage of nutrients yet minimum energy spent on transportation of the intra-cellular material. In laboratory experiments with P. polycephalum we represent Canadian major urban areas with rolled oats...

B. K. Katti G. Joshi Krishna Saw

Rapid urban growth is resulting into increase in travel demand and private vehicle ownership in urban areas. In the present scenario the existing infrastructure has failed to match the demand that leads to traffic congestion, vehicular pollution and accidents. With traffic congestion augmentation on the road, delay of commuters has increased and reliability of road network has decreased. Four s...

2011
Andrew G. Brooks Paulo Kemper Filho Koji A. O. Suzuki Mary Kathryn Thompson

Automated public urban freight transportation networks have the potential to greatly increase the energy efficiency of material transport by more closely matching the mass of the goods being transported with the mass of the transportation apparatus and reduce the cost to society by removing the requirement for human supervision for each package. In this paper, we present an overview of the cons...

2003
Suxia Liu Xuan Zhu

The authors present an integrated GIS tool, Accessibility Analyst, for accessibility analysis in urban transportation planning, built as an extension to the desktop GIS software package, ArcView. Accessibility Analyst incorporates a number of accessibility measures, ranging from catchment profile analysis to cumulative-opportunity measures, gravity-type measures, and utility-based measures, con...

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