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81.
Dimensioning of signalized intersections in realistic urban environment
Matej Dobovšek, Drago Sever, 2005, pregledni znanstveni članek

Opis: It is very complex to assure the dynamics of traffic networkin urban environment because of the intensity of traffic flowsand the limited space in the urban area. Signalized intersectionsare undoubtedly very important and frequent element inroad traffic network in urban regions, which greatly influencesthe traffic flow dynamics on each section as in the whole trafficnetwork. The time (delay) a vehicle needs to drive through anintersection directly influences the travel comfort, fuel consumption,traffic pollution and so on. There are many methodsfor dimensioning signalized intersections in the world literature.One of the most applied methods is the HIGHWAY CAPACI1YMANUAL (HCM) 2000 which is based on competentinput traffic flows and other characteristics of traffic signalregulations. The intention of this paper is to establish whetherwe can use the HCM 2000 method directly in the Slovenian realenvironment. Based on the established methodology of researchand limited number of delay measurement in real environmentintersections, there have been some deviations. Thecompletion of the level of service criterion for signalized intersectionshas been proposed, with the intention for more suitabilityestimation in the realistic environment.
Ključne besede: road traffic, intersections, signallization, control delay measurement, level of service
Objavljeno: 02.06.2017; Ogledov: 344; Prenosov: 36
.pdf Celotno besedilo (2,73 MB)
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82.
Development harmonisation of mountain resorts ropeway and tourist infrastructures in the Republic of Slovenia
Drago Sever, 200, kratki znanstveni prispevek

Opis: Operation efficiency of mountain resort systems depends largely on harmonious operation of the most important and therefore most influential elements of ropeway transportation and tourist subsystems. Within the framework of a tourist subsystem, the extent and quality of tourist offer for long-staying guests plays an essential role. Harmonised development of the above-mentioned elements ensures major utilisation and better economic management of the entire system so that it may offer quality services. First of all, the system enables permanent and environmentally friendly development of the systems that are as a rule in an absolutely sensitive alpine region. The article deals with some results of in-depth research on the ropeway transportation system and the results of know-how transfer into the actual environment of the Slovenian mountain resorts.
Ključne besede: traffic, transportation, ropeways, infrastructure, mountain tourism, mountain resorts, development, Slovenia
Objavljeno: 02.06.2017; Ogledov: 250; Prenosov: 39
.pdf Celotno besedilo (2,37 MB)
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83.
Incorporation of duffing oscillator and Wigner-Ville distribution in traffic flow prediction
Anamarija L. Mrgole, Drago Sever, 2017, izvirni znanstveni članek

Opis: The main purpose of this study was to investigate the use of various chaotic pattern recognition methods for traffic flow prediction. Traffic flow is a variable, dynamic and complex system, which is non-linear and unpredictable. The emergence of traffic flow congestion in road traffic is estimated when the traffic load on a specific section of the road in a specific time period is close to exceeding the capacity of the road infrastructure. Under certain conditions, it can be seen in concentrating chaotic traffic flow patterns. The literature review of traffic flow theory and its connection with chaotic features implies that this kind of method has great theoretical and practical value. Researched methods of identifying chaos in traffic flow have shown certain restrictions in their techniques but have suggested guidelines for improving the identification of chaotic parameters in traffic flow. The proposed new method of forecasting congestion in traffic flow uses Wigner-Ville frequency distribution. This method enables the display of a chaotic attractor without the use of reconstruction phase space.
Ključne besede: road traffic, congestion prediction, dynamic system, Wigner-Ville distribution, chaotic identification pattern
Objavljeno: 02.06.2017; Ogledov: 360; Prenosov: 173
.pdf Celotno besedilo (2,57 MB)
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84.
Logistic operator - fundamental factor in rational production of services in multimodal transport
Ratko Zelenika, Drago Sever, Sabina Kamnik Zebec, Bojan Pirš, 2005, pregledni znanstveni članek

Opis: From its theoretical and practical point of view, traffic is one of the fundamental factors of the economy in a state. In the developed European countries, a rational production of transport services is presented by multimodal transport and the correct selection of a logistic operator. The aim of multimodal transport is to link together different forms of traffic in the most effective way, as well as all operations considering transport. The logistic operator is the only professional to perform complete services in multimodal transport, therefore it was necesarry to enable its further development and, in accordance with that, to suggest suitable solutions. An increase of the existing and the creation of new traffic currents can only be achieved with the development of multimodal transport, the correct selection of logistic operator and better organisation of the traffic system. In the future, the Republic of Slovenia should continue developing multimodal transport in order to decrease the differences in forms of transport in the developed European countries in the shortest time possible.The main task of the Republic of Slovenia is to integrate into the European flows as soon as possible, engage in a reciprocal cooperation by liberalization of flows of commodities and services, and create conditions for the inflow of foreign capital where all advantages of multimodal transport come into consideration. The result of the research is a model of multimodal transport logistic operator connecting the basic elements of that transport.
Ključne besede: logistical operator, rationalization, multimodal infrastructure, multimodal suprastructure, multimodal technologies, multimodal movement of goods, logistical information systems
Objavljeno: 02.06.2017; Ogledov: 391; Prenosov: 26
.pdf Celotno besedilo (5,25 MB)
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85.
Model approach to quality provision of public passenger transport
Roman Krajnc, Drago Sever, 2010, pregledni znanstveni članek

Opis: Modern approach to transportation system research is based on the system theory. System analysis is relevant. Constant transportation technique and technology development caused by the need of conformation to the new market conditions is the basis for such an approach. The model approach for resolving the problems of public passenger transport is provided in a scientific report. The model of quality of passenger transport comprises the submodels which define relevant measures for the provision of passenger transport quality. The synthesis of sub-model for adoption of quality standards, submodel of passenger demands, submodel of operation safety and security and economic submodel construct the model of quality of public passenger transport (PPT). Its evaluation has been carried out using SWOT analysis.
Ključne besede: public passenger transport, traffic, lines, network quality, mobility
Objavljeno: 05.06.2017; Ogledov: 372; Prenosov: 168
.pdf Celotno besedilo (212,87 KB)
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86.
Model of sustainable growth and development of the cableway transport system in Slovenia
Sergej Težak, Ratko Zelenika, Drago Sever, 2011, izvirni znanstveni članek

Opis: The cableway transport system is very important for the Slovenian tourist economy. Within the Slovene transport system, the cableway transport subsystem has a specific role because it allows and ensures access to regions which are difficult to access or completely inaccessible by other transport subsystems owing to the configuration of the area. The quality and development of transport services are directly linked to the introduction of new cableways. New technical achievements, which are nowadays used in cableways, all provide greater capacity and higher speed of cableways, which, however, results in their higher maintenance and exploitation costs. The cableway transport system is being developed in Slovenia, but not on principles of sustainable development. This paper presents a model of sustainable growth and development of the cableway transport system in Slovenia based on which it is possible to determine assumptions for future growth so that the Slovene cableway transport system would approach standards of such highly developed systems. The new model includes ten essential elements of this system for which growth rates were calculated.
Ključne besede: cableway transport system, cableways, econometrics, growth matrix, sustainbale growth, winter tourism, mountain tourist centre
Objavljeno: 05.06.2017; Ogledov: 348; Prenosov: 166
.pdf Celotno besedilo (513,45 KB)
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87.
New approach to determining visibility length on passive protected level railroad crossings
Drago Sever, 2012, kratki znanstveni prispevek

Opis: The paper is based on the question whether the existing (legislation determined) method for determining the visibility length on passive protected level railroad crossings insures the relevant level of traffic safety. It has been recognised that using of such method does not provide stopping of road driver vehicles in front of railroad crossing in all conditions. Based on such conclusion a new approach to determining visibility length on passive protected level railroad crossing is proposed. The new approach is based on the assumption that it is necessary, primarily on level railroad crossings with local roads to recognize the worst possible and expected road and weather conditions. The testing of the proposed method in the real environment has shown that at lower speeds of road vehicles there is almost no difference, and that important benefits are recognised for the speeds of 30 and 50km/h where longer stopping distances of road vehicles have been detected (road vehicle can stop safely in front of a rail crossing) with almost the same visibility lengths. The use of the proposed method could have important impact on the increase of traffic safety on passive protected level railroad crossings.
Ključne besede: traffic safety, visibility field, level railroad crossings
Objavljeno: 05.06.2017; Ogledov: 325; Prenosov: 166
.pdf Celotno besedilo (892,41 KB)
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88.
Railway traffic management as a function of the new infrastructure manager
Damjan Mlakar, Drago Sever, 2007, pregledni znanstveni članek

Opis: This article offers a survey of the current decentralised form of railway traffic management within the public railway infrastructure in the The Republic of Slovenia, which is the result of out-of-date and worn-out safety installations of railway stations and railway lines. The article presents a new model of railway traffic management as the basis for efficient activity and harmonization of railway traffic management in the The Republic of Slovenia to the systems of railway traffic management within EU. This article presents the advantages of a centralised system of railway traffic management and demonstrates that the application of this system can solve the problem of decentralized traffic management as a function of the new infrastructure manager.
Ključne besede: traffic management, centralization of railway traffic, traffic management centre, railway traffic management model
Objavljeno: 05.06.2017; Ogledov: 312; Prenosov: 34
.pdf Celotno besedilo (3,23 MB)
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89.
Real capacity of ropeway transportation subsystem
Drago Sever, 2000, kratki znanstveni prispevek

Opis: The ropeway transportation system plays a major role in mountain resorts. In order to provide a sustainable development of the entire mountain resort system, the real capacity of the ropeway transportation system was set. The real capacity of the ropeway transportation system is one of the indicators of the development harmonisation level of single system elements. The research into this field was carried out at the Road Traffic Centre of the Faculty of Civil Engineering, University of Maribor. The paper deals with the basic points of the topic and the methods used. The know-how transfer of experiences into the Slovenian environment is presented together with the obtained results.
Ključne besede: traffic management, traffic, transport, ropeway, capacity
Objavljeno: 05.06.2017; Ogledov: 324; Prenosov: 41
.pdf Celotno besedilo (2,01 MB)
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90.
Simulation of crossroad traffic
Boris Tovornik, Drago Sever, Daniel Rogač, 2000, kratki znanstveni prispevek

Opis: It is difficult to find the right tool for making traffic regime models because so many different situations are involved. Simulink has proved to be one of the best. The paper shows the design and the use of components and models in the program Matlab/SIMULINK. It presents the simulation results for the model of a traffic light controlled crossroad and indicates the possibilities for the study of traffic optimisation in junctions.
Ključne besede: traffic, traffic light controlled crossroads, simulation, optimization
Objavljeno: 05.06.2017; Ogledov: 243; Prenosov: 35
.pdf Celotno besedilo (1,93 MB)
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