European Transport / Trasporti Europei (2000) 15/VI
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Chang Shaw-Ching, Ho Chi-Hong
The establishment of a car-following model based on driver's visuale angle experiments
Gregori Tullio
Transport impact analysis and price propagation effects in Johansen models
Mikula Miroslav, Saric Slauko, Kavran Zvonko
Traffic safety in using cellular phones while driving a car
Mrnjavac Edna, Zenzerovic Zdenka
Modelling of port container terminal using the queuing theory
Perrin Joseph, Martin Peter T.
Saturation detection for advanced urban traffic controlo no longer a necessity
Robinson Mark, Stead Bryan
Romano Elpidio, de Riso di Carpinone Vittorio||Tocchetti Andrea
A methodogy for air route planning: the case NAP - NYC
Siljkovic Zelika, Glamzina Martin
The presumptions of croatian entry into european traffic systema in 21st century
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- PublicationThe presumptions of croatian entry into european traffic systema in 21st century(EUT Edizioni Università di Trieste, 2000)
;Siljkovic, ZelikaGlamzina, MartinGeotraffic situation of Croatia is an essential precondition of the key transeuropean direction development across its territory. The building of modern roads and railways is giving opportunity to Croatia for more intensive inclusion into the European traffic network. In this matter, priorities should be directed on connecting with Middle and Eastern Europe across the main node Zagreb and with Western Europe along the Adriatic coast. The orientation of trade flow towards Croatian coast, gives an opportunity for Rijeka to develop as the leading port on the Adriatic, whose capacities are not enough used.1242 796 - PublicationTraffic safety in using cellular phones while driving a car(EUT Edizioni Università di Trieste, 2000)
;Mikula, Miroslav ;Saric, SlaukoKavran, ZvonkoThe use of cellular phones in cars offers a number of possibilities, but represents also a real danger while speaking, and especially while dialling the number of another subscriber. The number of cellular phones in cars is growing constantly, as unfortunately also the number of traffic accidents caused by the use of cellular phones while driving. This was the reason for studying the possibilities of hand-free dialling, e.g. by using speech only. This requires a high level of speech dialling recognition, which is provided by the application of neurone networks. The paper describes the operating principle of such a system, SPRED. Besides, the legislative regulations are also considered regarding the use of cellular phones in cars in certain countries.1363 874 - PublicationSaturation detection for advanced urban traffic controlo no longer a necessity(EUT Edizioni Università di Trieste, 2000)
;Perrin, JosephMartin, Peter T.Real-time adaptive traffic signal control systems require costly detector information. If limited traffic detectors could be used more efficiently, then implementation of adaptive signal control system would be cheaper. We can now access real time traffic flow data remotely. Sparse detector data can be manipulated to provide comprehensive real-time information. This research demonstrates how a new model, Turning Movement Estimation in Real Time (TMERT) infers unknown flows from those detected. The evaluation of the effectiveness of the quality of the estimates is comprehensive: 7,000 simulations and real-world network flow information on four separate networks with over 150 hours of traffic flow information. The paper details the relationship between actual detector data and the quality of the estimates. A location-allocation algorithm allows each link in a network to be ranked for prioritizing the detection locations. The multi-variant exponential relationship combines link flow and relative location within the network. This Utility Function’s purpose, therefore, is to enable the user to identify where to locate new permanent detectors to maximize model effectiveness. The findings identify that the TMERT model must operate with at least 30% coverage to provide reliable estimates and that it operates more efficiently at higher congestion states.1229 881 - Publication
540 697 - PublicationThe role of the BESTUFS Thematc Network in the promotion of best practice in urban freight distribution(EUT Edizioni Università di Trieste, 2000)
;Robinson, MarkStead, BryanThe BESTUFS Thematic Network is presented. The role of the Thematic Network in disseminating best practice in urban freight distribution is described and is its role in promoting trans-European collaboration. The objectives of BESTUFS are described and these are positioned against the European urban freight distribution problems that have been identified. The future for best practice in urban freight distribution is predicted and the goals of BESTUFS explained.1356 728 - PublicationTransport impact analysis and price propagation effects in Johansen models(EUT Edizioni Università di Trieste, 2000)Gregori, TullioIn this paper is a simple Johansen approach to multiregional economic modeling addressed. We reformulate a partial equilibrium model to analyze traffic and trade changes in a interregional economy due to exogenous shocks in transportation costs. A biregional model about Friuli-Venezia Giulia and the Rest of the Country is used to numerically assess the effects on prices, output and imports of hypothetical reductions in transportation costs between these regions. Since prices play an important role to determine new equilibrium, we derive input/output elasticities and introduce a graph theory approach to decompose propagation mechanisms in nominal and real quantities.
1513 780 - PublicationThe establishment of a car-following model based on driver's visuale angle experiments(EUT Edizioni Università di Trieste, 2000)
;Chang, Shaw-ChingHo, Chi-HongDeduction may be wrong if we miss the part of human perception. In this paper we design a field experiment to measure the driver's perceptual car width. That car is standing still in front of that driver inside a vehicle cab. We deduce our perceptual car following model based on the results above and also show its connection with the GM's car following model The model we present here is not very like the one based on the general driver's perceptual model. Additionally we establish a car-following simulation model based on our findings. The simulation performances are interpreted in terms of car following stability, shock wave phenomena, and some macroscopic traffic parameters.1047 811 - PublicationModelling of port container terminal using the queuing theory(EUT Edizioni Università di Trieste, 2000)
;Mrnjavac, EdnaZenzerovic, ZdenkaThe paper demonstrates application of the queuing theory in modelling a port container terminal As a port container terminal is a complex system, it is possible to achieve operational efficiency of the terminal through coordination of particular subsystem capacities, Le determination of optimal terminal capacity accommodation. A port container terminal can be considered as a queuing system defined with basic parameters: the ship or container arrival rate and the ship or container service rate, in an observed time unit. Appropriate indices of port container terminal operations are computed on the basis of these parameters. A model of total ship waiting and berth unoccupancy costs has been established through the introduction of costs as optimization criteria thus facilitating decision-making on optimal capacity of a port container terminal.3029 1795 - PublicationA methodogy for air route planning: the case NAP - NYC(EUT Edizioni Università di Trieste, 2000)
;Romano, Elpidio ;de Riso di Carpinone, VittorioTocchetti, AndreaThe entrance in service of wide body aircraft at the beginning of the 70's and the effect of the air transport liberalization are probably the main reasons for the increase of air traffic. The interest of airlines and airport management come up in this context with the aim of planning new air routes. The analysis of the demand of the existing flights, through the use of mathematical models, represents the initial stage of a planning process. Many researches have been developed in this field. In the present paper the convenience of direct air links, without intermediary landings between Naples and New York has been examined. The technique followed is that of simulating the choice behaviour of the passengers through the use of a Logit Model. As to the qualifications characterizing each available alternative we have developed 3 different hypothesis. In the first we have considered: the time of transportation, the fare, the frequency and a variable concerning the quality of the service offered. In the second hypotheses the transporta¬tion time and the frequency only have been taken into account. Finally in the third, we have considered a change in the fourth variable, believing it to be necessary to simulate the probability that a passenger might not find seats available on an certain journey. The next phase concerned the model calibration on the existing situation of the air link between Naples and New York, determining the capacity of the mathematical model in reproducing the present situation. Then, we have assumed the existence of the direct link between Naples and New York through the alternative of a true journey and a hypothetical one, obtaining the flows on all the journeys of the network. It has been showed that the alternative of direct transportation without intermediary landings would be the most attended one. However, the profitability for the airline under determined fare and frequency hypotheses should be expected as from 2004.1479 1091