<abstract xmlns="http://www.w3.org/1999/xhtml">The paper addresses the optimal bus stops allocation in the Laško municipality. The goal is to achieve a cost reduction by proper re-designing of a mandatory pupils’ transportation to their schools. The proposed heuristic optimization algorithm relies on data clustering and Monte Carlo simulation. The number of bus stops should be minimal possible that still assure a maximal service area, while keeping the minimal walking distances children have to go from their homes to the nearest bus stop. The working mechanism of the proposed algorithm is explained. The latter is driven by three-dimensional GIS data to take into account as much realistic dynamic properties of terrain as possible. The results show that the proposed algorithm achieves an optimal solution with only 37 optimal bus stops covering 94.6 % of all treated pupils despite the diversity and wideness of municipality, as well as the problematic characteristics of terrains’ elevation. The calculated bus stops will represent important guidelines to their actual physical implementation.</abstract>

University of Malaya (UM) and International University of Malaya-Wales (IUMW)

Optimal Bus Stops’ Allocation: A School Bus Routing Problem with Respect to Terrain Elevation

<abstract xmlns="http://www.w3.org/1999/xhtml">The salient scope of this paper is to enable the knowledge and understanding of urban freight transportation and provide guidance for implementing sustainable policies and measures in a city. To achieve this goal, an evaluation framework for city logistics policies and measures is developed, which demonstrates the complexity of urban freight transportation systems, through selected performance indicators, taking into account divergent stakeholders’ interests, conflicting business models and operations. Evaluation follows a hierarchical process; sustainability disciplines (economy and energy, environment, transportation and mobility, society), applicability enablers (policy and measure maturity, social acceptance and users’ uptake), multiple criteria and indicators, capturing the lifecycle impact of policies and measures and multiple stakeholders. Apart from the multicriteria context, the framework embeds methodologies, including, Impact Assessment, Social Cost Benefit Analysis, Transferability and Adaptability, and Risk Analysis. To demonstrate its applicability a case study is set for the City of Graz assessing the establishment of an Urban Consolidation Center. Results show that there is an overall improvement of 2.2% in the Logistics Sustainability Index when comparing before and after implementation cases of the Urban Consolidation Center.</abstract>

Sustainability Framework for Assessing Urban Freight Transportation Measures

<abstract xmlns="http://www.w3.org/1999/xhtml">Our research objective is to lower intralogistics costs by minimizing the number of shuffling operations in a steel plant company commercial warehouse. The process of dispatching products consists of retrieving set of steel bar (SSB) from a floor stored stack or a special stacking frame by an overhead crane. To retrieve a targeted merchandise all SSB above targeted must be reshuffled. Proper assignment of storage locations is a key logistics problem for efficient order picking. We are comparing two heuristics, that do not require information of dispatching sequence of any stored products. We simulated the problem at hand with both methods. Our objective is to count the number of reshuffles using each heuristic on randomly generated examples and decide which is better in the long run. Our problem has similarities with storage assignment of steel plates or steel coils for minimization of reshuffling operations. The problem is also comparable to storage assignment of containers in a container yard. In our case we are dealing with a special stacking configuration of products, that demands different approach. We want to demonstrate which heuristic should be used in companies that lack necessary storage information infrastructure.</abstract>

Comparison of Lowest-Slot and Nearest-Stack Heuristics for Storage Assignment of Steel Bar Sets

<abstract xmlns="http://www.w3.org/1999/xhtml">Road traffic safety among socioeconomic issues has become the major concern across the globe due to rise in road crashes attributed largely to human factor. This study tends to address attitudinal behavior of road users towards road ethics in Ilorin metropolis-Nigeria; covering both driver and motorcyclists and perception of motorists on road traffic enforcement agent. Questionnaire was employed as survey tools. Ordered logistic model were used to analyse the data on attitude of motorists and road traffic laws enforcement agents. About 87% of the 440 administered questionnaire were returned valid. A 3-model analysis was carried out and the findings showed that the attitude of the motorists, road traffic law enforcement agents and demographical index (gender, age and education) correlated with, and influence compliance with road traffic laws.</abstract>

Attitude of Motorists towards Road Ethics: Empirical Study

<abstract xmlns="http://www.w3.org/1999/xhtml">Improvements in battery technology make electric vehicles more and more suitable for the use as electricity storages. Many benefits could be achieved by using electric vehicles for storing electricity in their batteries. This paper talks about the idea of electric vehicles as electricity storages in electric power systems. The idea has a great number of supporters, but also a significant part of the professional community believes that is unfeasible. This paper is not classified in either side and strives to give a realistic picture of this idea. For this purpose, findings from papers published in scientific journals are mainly used. There is also some information from websites, mainly for some technical issues. Partly, the opinions of the authors are present. Specificities of EVs and EPSs that enabled the birth of this idea are explained along with proposed concepts through which the idea can be implemented. Keeping with the vehicle to grid concept, issues about the implementation of the idea are considered. Achievements in the practical realization of the idea are also presented.</abstract>

Faculty of Transport and Traffic Engineering

Electric Vehicles as Electricity Storages in Electric Power Systems

<abstract xmlns="http://www.w3.org/1999/xhtml">Maritime transportation for Tunisia plays an important role in trade exchange with other countries. Therefore, the objective of this paper is to measure the efficiency scores of 7 seaports in Tunisia by applying the Stochastic Frontier Analysis (SFA) with Cobb-Douglas production function and Data envelopment analysis (DEA) with CCR and BCC models. The annual data collected cover the 2007-2017 period for each port. Thus, the sample size for the analysis comprises a total of 77 observations. The empirical result shows that the total average scores of operating efficiency scores were DEA-BCC (0.746) >SFACD (0.536)>DEA-CCR (0.334) from 2007 to 2017. Given these results, the port of Gabes can be considered as the best efficient port in the 3 models (DEA-BCC, DEA-CCR and SFA-CD).</abstract>

The Technical Efficiency of Tunisian Ports: Comparing Data Envelopment Analysis and Stochastic Frontier Analysis Scores

AHEAD OF PRINT

Volume 14 (2023): Issue 1 (December 2023)

Volume 13 (2022): Issue 1 (December 2022)

Volume 12 (2021): Issue 1 (December 2021)

Volume 11 (2020): Issue 1 (February 2020)

Volume 10 (2019): Issue 1 (June 2019)

Volume 9 (2018): Issue 2 (October 2018)

Volume 9 (2018): Issue 1 (February 2018)

Volume 8 (2017): Issue 1 (May 2017)

Volume 7 (2016): Issue 1 (October 2016)

Volume 6 (2015): Issue 1 (November 2015)

Volume 5 (2014): Issue 1 (November 2014)

Logistics, Supply Chain, Sustainability and Global Challenges

 1. Theoretical, empirical and policy analyses on management, operation and performance in logistics and supply-chain management.2. Environmental and social / equity impacts on freight and passenger transport and implications of movement on cost and movement, capacity, demand, pricing, externalities.3. Efficiency of freight and passenger transport.4. Impact of driving forces (i.e. transport volume, modal split, technology, efficiency), on freight and passenger transport, its social, economic, environmental and ecologic impacts on society.5. Impacts of policy instruments (e.g. prices, regulations, infrastructure policy) on these driving forces, the efficiency of transport and its impact on society.   The journal has updated the name in 2021 to Logistics, Supply Chain, Sustainability and Global Challenges as this better reflects the development of the research field, encompassing supply chain, sustainability and global challenges, which are of utmost importance for logistics. From the field and content perspectives the updated journal title is broader that the previous title (Logistics &amp; Sustainable Transport) focusing on the transportation and logistics only.   Archiving   Sciendo archives the contents of this journal in Portico - digital long-term preservation service of scholarly books, journals and collections.   Plagiarism Policy   The editorial board is participating in a growing community of Similarity Check System's users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process.   Why subscribe and read   The journal of Logistics &amp; sustainable transport publishes informative and analytical international scientific and professional articles in the field of logistics and sustainable transport. Subject areas include logistics and related transport infrastructure, technological, operational, economic, and other environmental, social and institutional issues. This scope makes the journal inter- and multidisciplinary and in particular, a convenient source of information for logistics and transport researchers, planners, practitioners and policy makers at different - local, national and international levels, and across disciplines such as technology design, planning, implementation, management, policy-making, social, economic and environmental regulation.   Why submit   The journal publishes articles that reflect the concerns of government policy, industry and academia, their views on developments such as changes in the global supply chains as well as on the impact of increased mobility of freight and passengers. The subject areas at the same time address issues such as the environment, efficiency and equity.   a. The impacts of goods transport and logistics on society, including economic, ecologic and social effects.b. The efficiency of passenger and freight transport, and the abovementioned impacts on society.c. Sustainability of transport and logistics. 