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Periodica Polytechnica Transportation Engineering
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 0303-7800 - ISSN (Online) 1587-3811
Published by Budapest University of Technology and Economics Homepage  [7 journals]
  • Legal Aspects Concerning Use of Drones in the Conditions of the Slovak
           Republic within the Sphere of Intra-logistics

    • Authors: Gabriel Fedorko, Vladimíra Žofčinová, Vieroslav Molnár
      Pages: 179 - 184
      Abstract: The use of drones for material transmits or support of activities of intra-logistics belongs among the new and progressive technological methods. Their primary purpose does not lie in the monitoring of employees; for the most part, it is utilized in the sphere of transport, when monitoring objects and private land properties or when supporting of intra-logistics, which is its primary economic purpose. Individual entrepreneurs need to protect their widely delineated private complexes which are always busy and full of employees. That is why they are often interested in eliminating of monitoring complexity of these areas. Newly proposed drone use requires further attention not only from the technical sphere but also from the field of law. Our current legal frame should be amended and updated as such, that it would enable their use.
      PubDate: 2018-03-21
      DOI: 10.3311/PPtr.12131
      Issue No: Vol. 46, No. 4 (2018)
       
  • An overview of Natural Gas Use in Ships: Necessity and Engine Supply

    • Authors: Justas Žaglinskis, Paulius Rapalis, Nadezda Lazareva
      Pages: 185 - 193
      Abstract: The article consists of analysis of existing and planned air pollution from ships control and prevention tools such Marpol 73/78 Annex VI, Energy Efficiency Design Index, Energy efficiency operational indicator, Ship energy efficiency management plan, Regulation on the Monitoring Reporting and Verification of shipping emissions, Carbon tax, Maritime emission trading scheme. Norms of these control and prevention tools are difficult to ensue using traditional marine fuels. Pollution rates getting tighter and alternatives have to be used, and some of them have long been known and are not widely used due to objective reasons. Such alternative is natural gas, and its use in ship power plants could reduce concentrations of nitrogen, sulphur, carbon compounds and other pollutants in engine exhaust gas up to acceptable level. The part of maritime sector choosing gas or dual-fuel engines due to tighter pollution rates, and the supply of these engines analyzed in last part of article.
      PubDate: 2018-02-26
      DOI: 10.3311/PPtr.11708
      Issue No: Vol. 46, No. 4 (2018)
       
  • International Characteristics of the Macro-Logistics System of Freight
           Villages

    • Authors: Judit Oláh, Steffen Nestler, Thomas Nobel, József Popp
      Pages: 194 - 200
      Abstract: This study of the international characteristics of the macro-logistics system of freight villages is a first overview of the subject, which has not previously been available. The study is divided into four parts. The first part describes the empirical method of the study and introduces the databases which were set up. The second and most relevant part deals with the different continents and their logistics sectors. The “Classic” and “Challenger” countries of the continents in the field of logistics have also been identified on the basis of the “Logistics Performance Index 2014” from the World Bank. A comparison between the single continents makes up the third part. The final part introduces selected outstanding locations which were found during the research. In addition, the study can provide support for various actors (for example, logistics real estate developers) in opening up new markets.
      PubDate: 2018-01-30
      DOI: 10.3311/PPtr.11656
      Issue No: Vol. 46, No. 4 (2018)
       
  • Evaluation of Automated Enforcement Program in Amman

    • Authors: Hana Naghawi, Bushra Al Qatawneh, Rabab Al Louzi
      Pages: 201 - 206
      Abstract: This study aims, in a first attempt, to evaluate the effectiveness of using the Automated Enforcement Program (AEP) to improve traffic safety in Amman, Jordan. The evaluation of the program on crashes and violations was examined based on a “before-and-after” study using the paired t-test at 95 percent confidence level. Twenty one locations including signalized intersections monitored by red light cameras and arterial roads monitored by excessive speed cameras were selected. Nine locations were used to study the effectiveness of the program on violations, and twelve locations were used to determine the effectiveness of the program on frequency and severity of crashes. Data on number and severity of crashes were taken from Jordan Traffic Institution. Among the general findings, it was found that the AEP was generally associated with positive impact on crashes. Crash frequency was significantly reduced by up to 63%. Crash severities were reduced by up to 62.5%. Also, traffic violations were significantly reduced by up to 66%.  Finally, drivers’ opinion and attitude on the program was also analyzed using a questionnaire survey. The questionnaire survey revealed that 35.5% of drivers are unaware of AEP in Amman, 63.9% of drivers don’t know the camera locations, most drivers knew about excessive speed and red light running penalties, most drivers reduce their speed at camera locations, 44.4% of drivers think that the program satisfies its objective in improving traffic safety and 52% of drivers encourage increasing the number of camera devices in Amman.
      PubDate: 2018-02-16
      DOI: 10.3311/PPtr.10939
      Issue No: Vol. 46, No. 4 (2018)
       
  • Exploring the Effects of University Campus Decentralization to
           Students’ Mode Choice

    • Authors: Kornilia Maria Kotoula, Alexandros Sialdas, George Botzoris, Emmanouil Chaniotakis, Josep Maria Salanova Grau
      Pages: 207 - 214
      Abstract: Mobility patterns and travel behavior aspects of students traveling to universities, are gaining attention, as the completion of such every day trips are rather complicated. University students form a social group, essentially autonomous in terms of mode choice decision making. Understanding the mode choice decision process, may reveal the most appropriate interventions for achieving sustainable transport goals. The current study aims to examine various aspects of university students’ travel bahaviour such as travel distance, travel time, comfort and safety in the city of Xanthi, Greece. Moving a step forward, the paper provides a better understanding of students’ travel patterns in two different environments due to the University relocation from an urban environment to a more isolated one. For this purpose, a questionnaire survey is conducted where students describe their travel habits before and after the relocation. In addition, students are given a choice set comprised of eight different factors hypothesized to internalize the effect of the relocation on mode choice for the trips to and from the University and they are asked to prioritize them ranking them from the most significant one to the least important. For the analysis two Multinomial Logit models are developed. The results verify initial considerations; distance and time are the most important factors for both cases while the use of public transport instead of walking increases the importance of economy and safety.
      PubDate: 2018-02-26
      DOI: 10.3311/PPtr.11641
      Issue No: Vol. 46, No. 4 (2018)
       
  • Congestion from a Multimodal Perspective

    • Authors: Frederic Rudolph, Tamás Mátrai
      Pages: 215 - 221
      Abstract: This paper investigates the multimodal nature of urban congestion and network performance, with the aim of developing practice ready policy tools to alleviate the adverse effects of excess demand, no matter in which mode it realizes. As part of the efforts to get an overall understanding of how congestion is defined in various disciplines, we conduct a literature review of relevant engineering and microeconomics studies. The investigation reveals the main areas where contradiction can be identified between engineering and economics approaches. In a second step, we investigate the results of an expert survey about the principles of congestion analysis from a multimodal perspective. The main contribution of the paper is twofold. First, we draw attention to the pitfalls of oversimplified and narrow viewpoints on congestion. Second, we operationalize these principles in order to enable decision makers to assess the impact of urban transport measures on congestion.
      PubDate: 2018-05-02
      DOI: 10.3311/PPtr.12048
      Issue No: Vol. 46, No. 4 (2018)
       
  • Research on Gear Tooth Longitudinal Modification of Locomotive Traction
           Gear with Shaft Structure

    • Authors: Xiaochun Shi, Riming Zhang, Weidong He
      Pages: 222 - 231
      Abstract: By the contact analysis of the traction gears with shafts of high-speed and heavy-load locomotive, the deformation and load distribution of the Front Guide Surface in starting operation are obtained. According the results, the ideal longitudinal modification curve is fitted out. The gear parametric models were completed, and the load distribution and the contact stress of the gears are compared before and after tooth longitudinal modification in ANSYS. It shows the modification methods and the amount of the modification are reasonable.
      PubDate: 2018-05-23
      DOI: 10.3311/PPtr.10806
      Issue No: Vol. 46, No. 4 (2018)
       
  • Urban Planning: a Game Theory Application for the Travel Demand Management

    • Authors: Mark Koryagin
      Pages: 171 - 178
      Abstract: Urban infrastructure in the developing nations is generating a great number of environmental problems. Therefore, the problem of land distribution among road networks, parking spaces and landscaped parks is to be researched. The passenger behavior depends on traffic congestion, parking search time, public transport frequency, parking fee, etc. The travel mode choice model is described by logit function.
      A city territory is subdivided into three districts, residential, central and industrial, each of them trying to develop and implement the optimal policy of land use. The district criterion includes residential travel times, congestion and impacts of the parks on the environment. Any district should solve the effective land use problem while the public transport system tries to find the optimal frequency.
      The travel time depends on road capacity and is described by Greenshields model. The influence of parking capacity upon the parking search time is described by the BPR formula.
      Participants’ solutions influence one another; therefore, the coalition-free game is constructed. The existence of Nash equilibrium is proved for districts, passengers and public transport. The numerical example shows the impacts of value of time (VOT), population density and parking fee rates on districts land use.
      PubDate: 2017-09-04
      DOI: 10.3311/PPtr.9410
      Issue No: Vol. 46, No. 4 (2017)
       
 
 
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