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Promet - Traffic&Transportation journal

Accelerating Discoveries in Traffic Science

Accelerating Discoveries in Traffic Science

Articles

Vol. 20 No. 3 (2008)
Published on 25.05.2008

Seyyed Mohammad Sadat Hoseini, Manouchehr Vaziri
2008 (Vol 20), Issue 3

The evermore widespread use of microscopic traffic simulationin the analysis of road systems has refocused attention onsub models, including car-following and lane-changing models.In this research a microscopic model is developed whichcombines car-following and lane-changing models and describesdriver behaviour as a crash risk reduction process ofdrivers. This model has been simulated by a cellular automatasimulator and compared with the real data. It has been shownthat there is no reason to consider the model invalid for drivers'behaviour in the basic segments of freeways in Iran, duringnot-congested conditions. Considering that uncertainty of positionof vehicles is caused by their acceleration or deceleration, aprobability function is calibrated for calculating the presenceprobability of vehicles in their feasible cells. Multiplying thepresence probability and impact of crash, crash risk of cells iscalculated. As an application of the model, it has been shownthat when difference between vehicles brake deceleration increases,the total crash risk increases.


Mihaela Bukljaš Skočibušić, Tomislav Drobac, Željko Sić
2008 (Vol 20), Issue 3
The development of inland wate!Way traffic of the Republicof Croatia over the recent several years has attracted great attentionfrom experts whose tendencies are oriented to the developmentof strategy and traffic policy in the framework of theEuropean Union countries. The traffic increase on inland wate!Ways of Europe will be reflected on the increase in traffic oninland wate!Ways of the Republic of Croatia. Consequently,over the recent years the need has been recognized to improvethe border crossing mobility, as well as to improve the accessibilityto border areas on inland wate!Ways of the Republic ofCroatia. This paper attempts to briefly present the ERJ model(Electronic Reporting lntemational) in inland navigation,whose implementation will enable exchange of border informationamong authorities, vessels and other participants in inlandnavigation, by applying electronic notification messages in orderto facilitate crossing of international borders and trafficmanagement.

Sanja Steiner, Borivoj Galović, Željko Radačić
2008 (Vol 20), Issue 3
The paper elaborates the past development of air traffic inEurope from the aspect of its economic benefits and ecologicallack of sustainability of conventional technology. The mainguidelines of the strategic development are related to the implementationof the global ecological standard and actual reformationprocesses of the air traffic management system postulatedby A TM 2000+ Strategy and the 'Single European Sky'standard. The paper studies the wider aspects of integrated trafficdevelopment at the regional level and the factors influencingfurther development of the European air traffic.

Tomislav Josip Mlinarić, Mladen Nikšić, Milan Brkić
2008 (Vol 20), Issue 3
The implementation of fleet management in the train tractionactivity is a must in the conditions of market operation ofthe railway sector, since good management of traction units hasnot alternative. The crucial issue of implementing such sophisticatedtools is in real environment, and therefore SWOT analysisof the most important technological indicators has been carriedout, in order to determine the most efficient method of itsimplementation. The defined technological indicators and therespective criteria have been used to evaluate the possible implementationof the total fleet management system in the HiVuca vlakova (Hi- Train Traction) company. The pilot projectcarried out in the activities of the Hi- Train Traction hasresulted in great savings at the annual level in fuel consumption,creating also the preconditions for the savings in fleetmaintenance and work force recruitment. Based on the resultsof the pilot project the methodology for efficient implementationof fleet management was defined. The defined methodologywas tested in real conditions and can be implemented atany company which provides services of train traction or manoeuvringof locomotives.

Robert Spudić, Krešimir Somek, Vlado Kovačević
2008 (Vol 20), Issue 3
During the process of approaching the European associationsand NATO the Republic of Croatia has accepted the singlefuel concept for all ground vehicles of the Croatian Army.Croatia has also undertaken to insure that all aircraft, motorvehicles and equipment with turbo-engines or with pressurizedfuel injection, for participation in NATO and PfP led operationscan • operate using the kerosene-based aviation fuel(NATO F-34). The paper gives a brief overview and the resultsof the earned out activities in the Armed Forces of the Republicof Croatia, the expected behaviour of the motor vehicle andpossible delays caused by the use of kerosene fuel (NATOF-34) as fuel for motor vehicles. The paper also gives the advantagesand the drawbacks of the single fuel concept. By acquiringnew data in the Croatian Armed Forces and experienceexchange with other nations about the method of using fuelF-34, the development of the technologies of engine manufacturingand its vital parts or by introducing new standards in theproductjon of fuels and additives new knowledge will certainlybe acquired for providing logistics support in the area of operations,and its final implementation will be a big step forward forthe Republic of Croatia towards Europe and NATO.

Vedran Jelavić, Miloš Brajović, Ivica Đurđević-Tomaš
2008 (Vol 20), Issue 3
Port of Gruž is located in a naturally protected bay whichcan accommddate the biggest passenger cmisers and RO-ROships that sail the Mediterranean. At the same time there aremore yachts/'visiting the port because of the vicinity of theDubrovnik historic sites. The frequency of maritime traffic andother mariti~e services is rapidly increasing and sometimescausing owfrload in the summer months. The sizes of all kindsof ships a~d yachts that manoeuvre in the port are getting bigger.The itinerary for the following seasons and prognoses till2010 stress the increase in the number of ships, vehicles andpassengers. The activities at the passenger terminal are in progressat the moment and after completing all the works the passengerpier will be about BOOm long with the depth of 12m.Handling of cmisers will therefore be much easier and more efficient.Another benefit for the bay will be the construction ofthe Yacht marina and marina for the local boats all along thesouth-west coast of the bay. Considering summer peaks in allkinds of traffic it is necessary to analyse the state of all relevanttraffic factors and the density of traffic in order to organise safeand smooth flow of ships, vehicles and passengers through theport of Dubrovnik - Gmi.

Caj Holm, Lars Kallstorm, Mario Šafran
2008 (Vol 20), Issue 3
Intermodal transport can reduce the load of the road infrastructure.Knowledge gives it the necessary competitiveness andhelps to control its costs. Fast reaction to changing conditions,opportunities and requirements gives remarkable advantage.Setting up integrated logistic chains using alternative transportmodes requires the trust and close interaction of a variety of actorsinvolved in managing the chain. Especially in the dynamicmobile environment, knowledge has so far not been effectivelyused. FREIGHTWISE tackles this complexity by developing aframework architecture anchored and validated in a range ofdemonstration cases involving commercial and public actors.This paper discusses the general FREIGHTWISE objectivesand its North-East Case, the Logistiikkainfo goods transportservice network information system to be implemented for theEstonian - Finnish transport chain.

Mirjana Kovačić, Tihomir Luković, Čedomir Dundović
2008 (Vol 20), Issue 3
This paper presents systematically and concisely legal regulationsimportant for nautical tourism and the operation ofnautical ports. The authors have examined the cu'ent legalsystem and considered and determined its implementation androle in the development of nautical tourism. The developmentof nautical tourism requires complex legal regulation becausepublic and private interests, international conventions and nationalregulations and numerous elements of navigation safetyare interlinked at different levels. The developed Medite'aneancountries like Spain, France and Italy have very old regulationsand efficient systems for enforcing and upgrading them. Thesystem of enforcing the laws, testing them and decreasing therisks and difficulties which may arise from inadequate formulationsis often more important than the law itself The less developedcountries, like Croatia and Greece, have not acceptedthe problem, and therefore create a certain degree of legal insecurityand inefficiency of the enforced laws. The paper has definedand analysed the existing problems and indicated the possiblesolutions. The development of a logistics system of normativeconditions relating to nautical tourism and nautical tourismports has been defined and a logistics model of strategic decision-making presented.


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