Vehicle Routing Problem with Heterogeneous Customers Demand and External Transportation Costs

Jachimowski, Roland; Żak, Jolanta

doi:10.12720/jtle.1.1.46-50

Cited by 8 publications

(7 citation statements)

References 4 publications

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“…VRP models can be solved according to different criteria functions; Jachimowski and Żak [18] formulate VRP with Heterogeneous Customers Demand according to external transportation costs. Jacyna and Kłodawski [19] discuss the problem in aspect of transport co-modality, similarly as Żak et al [20], Lewczuk et al [21].…”

Section: Cvrp With Emission Ratesmentioning

confidence: 99%

Vehicle routing in an urban area: environmental and technological determinants

Lewczuk

Żak

Pyza

et al. 2013

WIT Transactions on the Built Environment

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This paper discusses selected environmental and technological issues of routing freight vehicles in urban areas. The conditions of organizing distribution minimizing not only realization time but also the emission of harmful components of exhaust gases are described. Time-dependant traffic conditions characteristic for densely populated urban areas are defined and discussed according to ecological aspects. Theoretical information about CO 2 emission in urban conditions are gathered and used to formulate the base of mathematical model of a Time-Dependant Vehicle Routing Problem with emission criteria function, as a version of Capacitated Vehicle Routing Problem.The model comprises selected characteristics of urban transport infrastructure such as distances, speed limits, zones, or the effect of rush hours. It allows considering different types of vehicles according to the task requirements and emission characteristics, and changing traffic conditions.The model is implemented onto a representation of a real transport network and solved for given data with two step-heuristics basing on a modified A-star algorithm and genetic programming. Appropriate results, future research directions and other potential uses are presented and discussed.

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Section: Cvrp With Emission Ratesmentioning

confidence: 99%

Vehicle routing in an urban area: environmental and technological determinants

Lewczuk

Żak

Pyza

et al. 2013

WIT Transactions on the Built Environment

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“…Road connection between Siding -Recipient (delivery by Van) includes (E) edges between the vertices (road and rail connections) [3]. A graph structure of the distribution system in the analyzed issues is presented in Fig.…”

Section: CCmentioning

confidence: 99%

“…This model provides an overview of the problem. During its solving must be recognized much more data and constraints taking into account the randomness and the time dependence of customer service [3,18]. In 5 points, the paper presents the first stages of work on the problem of delivery with the use of trams using a pre-made application "TramTrans".…”

Section: CCmentioning

confidence: 99%

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Holistic approach to the ecological cargo distribution in urban areas with the use of multi-modal transport

Jacyna¹,

Szczepański²

2013

WIT Transactions on the Built Environment

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Due to the continuous development of cities and growing demand for cargo transportation, it is necessary to develop and implement new concepts for distribution. The paper presents the concept of a hierarchical cargo distribution in the distribution system using multi-modal transport. This approach involves the use of trams and electric vehicles. It is justified from the point of view of the European Union's strategy related to lowering emissions of toxic compounds. The use of such means of transport not only has a positive impact on the ecology, but also on the social development of cities and the living conditions of the inhabitants. The presented concept includes the use of cargo consolidation centers located on the outskirts of cities. The city was divided into three zones with different traffic characteristics and the possibility of dynamically change the areas size occupied by them. The use of different means of transport needed to take account of appropriate transport infrastructure like sidings (loading track) located within the city. This article presents a mathematical model of that distribution system. Linear and point infrastructure and other system components like means of transport were characterized. Constraints arising from the technical and legal conditions were identified. The considerations presented in this article represent an interesting approach to deliveries in urban areas. Positive and negative aspects of the used approach were presented in the paper.The developed concept is a new approach to the cargo distribution with a positive impact on reducing exhaust emissions in cities. Article presents the part of research in the "EMITRANSYS" project implemented by the Faculty of Transport in Warsaw University of Technology and the Poznan University of Technology.

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“…Problem belongs to class of NP-hard problems. Based on the solutions proposed in the works [8], [9], [20], [26] decided to use heuristic optimization methods.…”

mentioning

confidence: 99%

Genetic Algorithms Based Approach for Transhipment Hub Location in Urban Areas

Szczepański

Jacyna-Gołda²,

Murawski

2014

AoT

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Points of distribution, sales or service are important elements of the supply chain. These are the final elements which are responsible for proper functioning of the whole cargo distribution process. Proper location of these points in the transport network is essential to ensure the effectiveness and reliability of the supply chain. The location of these points is very important also from the consumers point of view. In this paper developed method of points location was present on the example of urban transport network. The developed approach is based on the Vehicle Routing Problem in the multistage distribution systems. The proposed method uses a genetic algorithm. Article also presents a mathematical model of delivery cost as a criterion func

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Vehicle Routing Problem with Heterogeneous Customers Demand and External Transportation Costs

Cited by 8 publications

References 4 publications

Vehicle routing in an urban area: environmental and technological determinants

Vehicle routing in an urban area: environmental and technological determinants

Holistic approach to the ecological cargo distribution in urban areas with the use of multi-modal transport

Genetic Algorithms Based Approach for Transhipment Hub Location in Urban Areas

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