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Promet - Traffic&Transportation journal

Accelerating Discoveries in Traffic Science

Accelerating Discoveries in Traffic Science

Articles

Vol. 12 No. 2 (2000)
Published on

Drago Sever
2000 (Vol 12), Issue 2
The ropeway transportation subsystem plays a major role inmountain resort systems. It is characterised by an exceptionalinle1weavement of interactions of single system elements. In orderto provide sustainable development of the entire mountainres on systems, the real capacity of the ropeway transp01tationsystem was set. Real capacity of the ropeway transp01tation systemis one of the indicators of the development harmonisationlevel of single system elements. The research into this field wasdone at Road and Traffic Centre of Faculty of Civil Engineering,University of Maribor.The atticle deals with basic points, with method and the resultsof research. It also represents some experiences ofknow-how transfer into the Slovene environment.

Teodor Perić, Željko Radačić
2000 (Vol 12), Issue 2
In the whole cycle of production, distribution, exchangeand coi!Sumption, the market is the place of exchange andrealisation of the manufactured products and services. Marketis the main f01m of link between the producer and the consumer;it is on the market that supply and demand are balanced,the two basic market categories.Because of the specific characteristics of the transp011ationprocess, the economic theory coi!Siders that there is no uniquemarket of traffic services, but rather that there are lransp011alionmarkets on ce11ain relations. Thus, one can speak of theimpe!feclion of the transportation market and its impossibilityto balance traffic supply and demand due to unity of supply anddemand, due to non-flexibility of traffic supply regarding trafficdemand, due to technical characteristics of traffic infrastructure,and due to various technical and technological characteristicsof cenain transponation branches. Therefore, the relationsbetween supply and demand cannot be regulated automaticallyby transporlation market, and consequently, neithercan the structuring of the transp01tation system rely only on theinfluence of the transp01tation market. This is why govemmentappears as the CO!Tective measure of the market, i.e. governmentregulation of supply and demand. This govenzment regulationis realised through general economic and transportationpolicy.

Husein Pašagić, Ivan Mikulčić, Ante Marijan
2000 (Vol 12), Issue 2
The paper deals with the traffic management of a traffic signal-controlled intersection. One set of movements consists ofall the possible streams at an intersection that occur simultaneously.The set of movements changes cyclically during thecontrol cycle. Within a cycle, each stream has to get at leastonce free passage, effective green time. Each set has to definethe traffic flow at the intersection with no crossing points(points of conflict). In the cyclical order of the set of movements,the intersection capacity is greater if the number of setswithin the cycle is lowe1; and 'overlapping' between the setsgreater. Using graph the01y, two intersections in the city ofZagreb have been analysed: Dubrovnik Avenue - VeeeslavaHoljevcaAvenue (6ltraffic accidents a year) and Savska Road- Street of the City of Vukovar (36 traffic accidents a year).

Branimir Pavić, Jerko Radoš, Mario Šafran
2000 (Vol 12), Issue 2
The paper considers the influence of the relationship betweenthe dynamic behaviour of the universal joint and thedamage in the period of transitional occurrences. Based on thetheoretical study of the shaft system with universal joints, theclassification, arrangement and value of dynamic loads havebeen determined, and the dynamic model desoibed by differentialequations has been defined. Laborat01y testing havebeen directed towards checking the safety and durability comparedto the structural requirements, precision and quality ofproduction, as well as mechanical and thermal treatment for acharacteristic type of a universal joint.

Kristijan Rogić, Pave Marinović, Grgo Luburić
2000 (Vol 12), Issue 2
Efficienttranspmt system is an essential prerequisite for thecompetitiveness of the European Union. The predicted increasein intemational trade, sudden expansion of the Union tothe middle and eastern European countries and widerco-peration of the Meditenmuan countries will make the roleof transportation even more significant.Unless the transpmt industry reconsiders its requirementfor modal-independent se1vices and uses the additional capacitiesin other modes of transpmt, the road traffic is likely to furtherincrease its share in the market, which amounts today to72%.In order to achieve social, economic and ecologicalsustainability, efficient and balanced use of the existing capacitiesin the overall traffic system of Europe has become the keychallenge.Therefore, the Community, among other things, strives towardsreal balance of the business policy which gives preferenceco the development of unique, integrated traffic systems for theCommunity as a whole.Promoting intermodality is a means of business policywhich enables systemic approach to traffic. Traffic services areoffered as modally independem links from home to home,based on a series of feasible alternatives regarding transportmode through a new, efficient implementation of the traffic systemthus reducing the transport costs and enabling creation ofadditional values.

Lučka Lorber
2000 (Vol 12), Issue 2
Structural changes of economic activities within the newsocial order of the second half of the 20th centwy play an influentialrole in the restructuring of industry and increase the shareof service sector in the economy. They shape the internationalmarket and trigger the globalisation of the society. Thus, the ageof industly restructuring processes as a factor of changing thelandscape physiognomy or its transformation respectively, hasbegun.The transition to post-industrial society is marked by thethird technological industrialisation. New socio-economicconditions have already driven the indus!!)' to shift its geographicposition. Traffic - as the indust1y location factor - ischanging its role. The development of transp01t, traffic and logisticsis becoming the key factor in the process of restructuringthe economic development of the city of Maribor.

Dragan Badanjak, Davor Žmegač, Dražen Kaužljar
2000 (Vol 12), Issue 2
The paper analyses the conditions for constructing a freight- transp01t centre in Kutilza with special emphasis on the positiveinfluences that such a project could have for the town ofKutina and the Moslavina region. The analysis of the locationhas shown that the conditions for its establishment have beenmet, provided that town administration determines the ways inwhich the project will be realised regarding the necesswy financialscheme.

Jurij Kolenc, Livij Jakomin, Igor Trupac, Miran Zgonik
2000 (Vol 12), Issue 2
This paper presents the results of research in the transportprocess efficiency from the point of view of driver's activities inroad goods transp01tation, by vehicles with payload up to 5tons. Based on the expe1t assessment of 6233 transportationtasks and measuring the frequency of individual operations ofthe drive1; an analysis has been performed on the results andtheir influence on the efficiency of the transp011 process.Among the numerous activities of the driver directly related todriving a motor vehicle, those relating to the vehicle and cargobefore can-iage, in the course of can-iage and after it, this paperconcenLrates on the analysis of those activities related to loadingand discharge, the specific manoeuvres and d1iving operationsin a motor vehicle.


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