Periodica Polytechnica Transportation Engineering最新文献_第9页

The Prospect of Using the Dual Gauge Line for the Ukraine–Hungary Railway Connection 乌克兰-匈牙利铁路连接使用双轨线的前景

Periodica Polytechnica Transportation Engineering Pub Date : 2022-09-01 DOI: 10.3311/pptr.20572

M. Kurhan, S. Fischer, D. Kurhan

{"title":"The Prospect of Using the Dual Gauge Line for the Ukraine–Hungary Railway Connection","authors":"M. Kurhan, S. Fischer, D. Kurhan","doi":"10.3311/pptr.20572","DOIUrl":"https://doi.org/10.3311/pptr.20572","url":null,"abstract":"There are several international transport corridors in Hungary. Záhony railway station is one of the largest hubs in Europe, providing a railway connection between Ukraine and the European Union. Two different railway tracks meet and come together here, such as the standard (1435 mm) and broad (1520 mm) gauges. The availability of a developed infrastructure of the dual gauge on the territory of Hungary presupposes the corresponding development of the railway connection by Ukraine. In order to effectively use the dual gauge line and solve problems of special design, it is necessary to ensure the appropriate train flows. This research aims to provide scientific support for express analysis of the railway routes' competitiveness between Ukraine and the European Union to define the determining factors. The application of such approaches provides a tool for establishing the prospects for the development of existing railway lines, considering their features. Scientific approaches to creating methods for determining the priority areas of railway transport have been further developed. Apart from involving such essential indices as average speed and traffic volumes, the authors added the possibility of considering the presence of lines with such design features as single-track sections, non-electrified, dual gauge, etc., on the route. The theoretical background is applied as a tool for rapid calculations for increasing the competitiveness of the Chop–Záhony dual gauge line.","PeriodicalId":39536,"journal":{"name":"Periodica Polytechnica Transportation Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46938786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Integrated Smart System for the Coordination of Traffic Light Traffic Management and Intelligent Public Lighting in Hungary 匈牙利红绿灯交通管理和智能公共照明协调集成智能系统

Periodica Polytechnica Transportation Engineering Pub Date : 2022-08-30 DOI: 10.3311/pptr.20397

Fecser Nikolett, Tamás Árvai, István Hausel, László Könözsy, István Lakatos

引用次数: 0

Design of an LMI-based Polytopic LQR Cruise Controller for an Autonomous Vehicle towards Riding Comfort 基于lmi的自动驾驶车辆行驶舒适性多面体LQR巡航控制器设计

Periodica Polytechnica Transportation Engineering Pub Date : 2022-08-25 DOI: 10.3311/pptr.20075

Gia Quoc Bao Tran, Thanh-Phong Pham, O. Sename, P. Gáspár

引用次数: 0

Estimation of Queue Length at Signalized Intersection Under Non-Lane Based Traffic Conditions 非车道交通条件下信号交叉口队列长度估计

Periodica Polytechnica Transportation Engineering Pub Date : 2022-08-15 DOI: 10.3311/pptr.17454

Jatoth Jithender, A. Mehar

{"title":"Estimation of Queue Length at Signalized Intersection Under Non-Lane Based Traffic Conditions","authors":"Jatoth Jithender, A. Mehar","doi":"10.3311/pptr.17454","DOIUrl":"https://doi.org/10.3311/pptr.17454","url":null,"abstract":"Excessive queue length is formed at approaches of signalized intersection if demand flow rate exceeds the saturation flow. The analysis of approaching flow at signalized intersections make easier to predict the queue length for avoiding traffic congestion. At congestion level, queue length reaches to maximum, and the traffic flow becomes zero. Measurement of queuing is essential for design and evaluation of traffic flow facilities. The literature review finds various methods for estimating queue length at signalized intersection under homogeneous and heterogenous traffic flow conditions. Traffic flow data was collected at different intersections in Hyderabad city using videography method. The present study determined queue length at approaches of signalized intersection by using the existing methods given in the literature. The results showed the queue length obtained from different methods are failed to match the queue length as observed in the field. Finally, the study developed a multivariable model for predicting queue length by checking the sensitivity of various factors influencing on queue length at the approach of signalized intersections. Further, the model was validated using field data collected at other approaches based on statistical analysis. Statistical evidence confirmed that the queue length estimated from the proposed model well replicates the queue length observed in the field under the given traffic and roadway conditions. The study recommends that the proposed model works well for the signalized intersection operating with a high proportional share (above 30%) of Two-wheeler in the mixed traffic but limited to operating with higher volume conditions.","PeriodicalId":39536,"journal":{"name":"Periodica Polytechnica Transportation Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46811941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Comparing the Combustion Process and the Emission Characteristic of a Stationary Heating Device System and an Internal Combustion Engine with Experimental Investigation 固定式加热装置系统与内燃机燃烧过程及排放特性的比较与实验研究

Periodica Polytechnica Transportation Engineering Pub Date : 2022-08-05 DOI: 10.3311/pptr.18751

G. Szabados, Péter Nagy, I. Zsoldos, J. Rohde-Brandenburger

{"title":"Comparing the Combustion Process and the Emission Characteristic of a Stationary Heating Device System and an Internal Combustion Engine with Experimental Investigation","authors":"G. Szabados, Péter Nagy, I. Zsoldos, J. Rohde-Brandenburger","doi":"10.3311/pptr.18751","DOIUrl":"https://doi.org/10.3311/pptr.18751","url":null,"abstract":"Stationary heating devices can be used to warm up the coolant of an internal combustion engine or the cabin air of a vehicle. This kind of heat engine transforms the chemical energy content of liquid fuels into heat energy. The combustion process and the emission of such a device is in focus in this study, which would be the first part in a greater project in the field. Therefore, some relevant parameters have been established. Relevant cycles have been chosen for the kinds of heat engines. It means a normal mode cycle for the stationary device and a WLTC cycle in the case of the direct injection gasoline engine. Fuel used was the same for both. This heat transfer process is such, that the combustion seems to be quite simple and rough in the stationary device compared to that of in internal combustion engine. This means an inhomogenous combustion with non-premixed flame at a low combustion temperature. This situation affects the emission characteristic accordingly, so causes low NOx and relatively high particle relevant emission comes out from the device. As far as the device's particle relevant emission is concerned it would be suitable for further investigation described at the end of the article.","PeriodicalId":39536,"journal":{"name":"Periodica Polytechnica Transportation Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49093207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Application of the IRAP Method Combined with GIS to Improve Road Safety on New Highway Projects in Algeria IRAP方法结合GIS在阿尔及利亚新公路项目中改善道路安全的应用

Periodica Polytechnica Transportation Engineering Pub Date : 2022-08-03 DOI: 10.3311/pptr.19026

Abdelhak Derras, K. Amara, Ramdane Oulha

{"title":"Application of the IRAP Method Combined with GIS to Improve Road Safety on New Highway Projects in Algeria","authors":"Abdelhak Derras, K. Amara, Ramdane Oulha","doi":"10.3311/pptr.19026","DOIUrl":"https://doi.org/10.3311/pptr.19026","url":null,"abstract":"This article aims to proactively predict high-risk accident areas in a new highway project in terms of its technical and geometric characteristics. The purpose of this study is to provide road project managers with better road safety assessment tools for the vehicle occupant category. The methodology used combines the International Road Assessment Program (IRAP) methodology and the Geographic Information System (GIS). The IRAP program enables the calculation and classification of risks for each 100-meter segment besides their categorization using a star rating; whereas, the GIS is used to map the risks and identify high-risk accident segments. This method was applied to a new highway project of 110 hectometres located in GHAZAOUET in Algeria. The results of the study revealed that this combined method is innovative in more than one way as it is an effective decision-making aid tool for road safety experts. It, therefore, makes it possible to target accident-prone sections in a faster way before carrying out on site road safety inspections. Technically speaking, this study shows that the existence of closely curved radii mixed at traffic speeds exceeding 80 km/h and the presence of road exits are the main factors affecting the safety of vehicle occupants. Speed control; thus, remains one among the cheapest measures to improve safety.","PeriodicalId":39536,"journal":{"name":"Periodica Polytechnica Transportation Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47459779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Real-time Damper Force Estimation for Automotive Suspension 汽车悬架减振器力的实时估计

Periodica Polytechnica Transportation Engineering Pub Date : 2022-08-02 DOI: 10.3311/pptr.20076

Thanh-Phong Pham, Gia Quoc Bao Tran, O. Sename, Thi Thanh Van Phan, Dung Hoang, Quoc Dinh Nguyen

引用次数: 0

Finite Element Modeling of Additive Manufacturing in Case of Metal Parts 金属零件增材制造的有限元建模

Periodica Polytechnica Transportation Engineering Pub Date : 2022-07-26 DOI: 10.3311/pptr.19242

Hussein Alzyod, P. Ficzere

{"title":"Finite Element Modeling of Additive Manufacturing in Case of Metal Parts","authors":"Hussein Alzyod, P. Ficzere","doi":"10.3311/pptr.19242","DOIUrl":"https://doi.org/10.3311/pptr.19242","url":null,"abstract":"Metal Additive Manufacturing has grown from 3D metal printing; this technology leads to manufacturing parts using various metallic materials.Additive Manufacturing technology uses the same principle of slicing a solid model into multiple layers and creating a tool path for each layer, then uploading this data to the printing machine and building the part up layer by layer following the sliced model data using a heat source (laser, electron beam, electric arc, or ultrasonic energy, etc.) and feedstock (metal powder, wire or thin metal sheet, etc.).The Additive Manufacturing process starts with designing the prototype, continues with printer pre-processing, then with printing the prototype, and finally with post-processing to get the final part, followed by testing. This sequence has to be repeated till achieving the desired prototype. This method costs money and time. In this paper, the Simufact Additive Manufacturing software makes a virtual simulation to save time and money. In this virtual modelling, different types of materials can be used. Different approaches can be tested, such as building orientations with various parameters, changing supporting structures, and cutting and support removal to achieve a usable process, which is free from damaging effects on the first time that goes through the build. This paper deals with three types of metal alloys (TiAl6V4, AlSi10Mg, and 316L). Different types of machines, thermal analysis, mechanical calibration, thermal and thermomechanical calibration, were applied to find the set parameters such as laser power, inherent strains, exposure energy fraction, and volumetric expansion factor.","PeriodicalId":39536,"journal":{"name":"Periodica Polytechnica Transportation Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48474424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

A Systematic Review of the Latest Advancements on Structural Equation Modelling (SEM) Technique Focusing on Applications in Transportation Planning 结构方程建模(SEM)技术在交通规划中的应用

Periodica Polytechnica Transportation Engineering Pub Date : 2022-07-25 DOI: 10.3311/pptr.17523

Karzan Ismael, S. Duleba

{"title":"A Systematic Review of the Latest Advancements on Structural Equation Modelling (SEM) Technique Focusing on Applications in Transportation Planning","authors":"Karzan Ismael, S. Duleba","doi":"10.3311/pptr.17523","DOIUrl":"https://doi.org/10.3311/pptr.17523","url":null,"abstract":"Finding methods to develop transportation planning and accordingly attract more people to use sustainable transportation is one of the most important subjects for transportation planners and decision-makers in current studies. The Structural Equation Model (SEM) is a statistical approach to examining the relationship between observed variables and latent variables. SEM is not only a single process, but also a cluster of related statistical techniques. The potential of SEM techniques lies in the essence of several issues in transportation planning and in using it as a guide for authorities. The main aim of this study is to present a systematic review of the application of the SEM methods in the assessment of transportation planning in the past decades, consequently, encouraging researchers to further investigate.After conducting a review of 47 articles published in high-quality journals, from 2011–2020, the recorded articles are clustered into three main groups; perception, satisfaction and loyalty, and behavior related to mode choice. Further, these three groups are classified according to numerous key perspectives, containing published year, type of transportation mode, sample size, software and method.The result of this review article shows that since 2018 the usage of SEM approaches has significantly increased for the evaluation of public transportation service quality. Furthermore, recall findings in this article are recommended for researchers such as the improvement of the application and practice of SEM utilize methods in terms of transportation planning research to avoid imprecisions in a future study, particularly addressing the problems related to public transportation.","PeriodicalId":39536,"journal":{"name":"Periodica Polytechnica Transportation Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44434177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Developing a New Driver Assistance System for Overtaking on Two-Lane Roads using Predictive Models 基于预测模型的双车道超车辅助系统研究

Periodica Polytechnica Transportation Engineering Pub Date : 2022-06-30 DOI: 10.3311/pptr.19218

S. A. Fadhil, A. Al-Bayatti

{"title":"Developing a New Driver Assistance System for Overtaking on Two-Lane Roads using Predictive Models","authors":"S. A. Fadhil, A. Al-Bayatti","doi":"10.3311/pptr.19218","DOIUrl":"https://doi.org/10.3311/pptr.19218","url":null,"abstract":"The complexity of an overtaking maneuver on two-lane roads merits a thorough method for developing an assistance system to prevent accidents, thus reducing the number of fatalities and the associated economic costs. This research aims to introduce a new Driver Overtaking Assistance System (DOAS). This system is based on the proactive prediction of the possibility of overtaking any preceding vehicle(s) both accurately and safely. To provide a comprehensive system, different factors related to the driver, the vehicle, the road, and the environment which have an impact on the maneuver have been taken into consideration. In addition to considering the main overtaking strategies including accelerative, flying, piggybacking, and the 2+. The proposed system is a vehicle-based safety system based on the collection of contextual information from the driving vicinity through Hello beacon messages and a set of sensors that are used as part of the reasoning process of the context-aware architecture to safely initiate the overtaking maneuver. A classification model was implemented for both the Artificial Neural Network (ANN) and Support Vector Machine (SVM) learning algorithms. A vehicle driving simulator STISIM Drive® was used to conduct driving experiments for 100 participants of different ages, gender, and levels of mental awareness. The results obtained from the DOAS show high accuracy in aiding a safe overtaking maneuver. The classification model shows promising results in the predictions, through perfect accuracy and a very low level of outcome errors.","PeriodicalId":39536,"journal":{"name":"Periodica Polytechnica Transportation Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45129229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1