The term inventory implies various material means whichare for a certain period of time excluded from the productionprocess or transport with the aim of being used at a later pointin time, as the need might arise.The work analyses an example of the operation method ofone system according to the model of rejecting unsatisfied demands,with the task of determining the op1imal invento1y volumeand !he ordering levels in order 10 minimise the annualcosts.

Traffic demand and supply are in mutual interaction andmutually coordinated.Transport needs (of goods and passengers) cause an increasein consumption, and on the other hand influence theconstruction and improvement of available traffic capacities,which in tum provides conditions for new increase in transportdemand. As a result, traffic acts in return on the development ofinduslly and also for the needs of people. It precedes the developmentof demand, i. e. its interaction provides the possibilityof increase in the tramport se1vice demand.

This paper deals wilh the criteria and requirements in developinggeneral autonomous software related to handling aircraftat the ailp011. ft gives an ove1view of almost all the influencingfactors which are relevant to 'processing' an aircraftboth upon aiTival as well as on departure. It gives a brief descriptionof the conventional balancing method which is beingused, of 1/ze latest advancement in the field, and it offers a concretesuggestion for improving the reliability of criteria andresultsin aircraft handling.The main idea of this initial work is to unify all the necessaryactivities and to register them. by one computer, from landinguntil take-off, including computer communica1ion withother ai1ports and companies. Cun·ently, the programs of certainair companies are being used and they have produced individualsoftware in co-operation wilh the manufacturers only forcertain types of aircraft that are cwTently employed by !hem.Since the range of aircraft types landing at ahports is growing,!here is the need to find a universal program which can calculatethe balance chart for each aircraft based, of course, onthe manufacturer-supplied design data.

Although a recognised phenomenon affecting a vessel, particularlyin shallow and confined wate1ways, squat is difficult tocalculate, quantify and apply.Many different factors affect its impact. It is always a predictedfigure, depending on factors that may at any given timebe unknown or difficult to asce11ain with any degree of accuracy.It involves, but is not limited to the input of informationfrom the vessel's particulars, as well as those of the limitationsof the wale/Way to be transited, traffic interaction, factor oftides and tidal streams, currents and prevailing weather etc.The knowledge of squat, its calculation and application ofsafe margins, and timely preventive action (reduction of speed)may save a vessel from grounding and its aftermath. Lack ofappreciation of squat can prove to be ve1y costly.

Besides standard joining procedures in automotive industrya n wnber of a ltema ti ve solutions are used, based on specific industrialneeds.This article briefly presents the basic conditions that mustbe met by the automobiles of new generation and states the reasonsfor an in-depth change in the concepts of construction andmaterials used as well as in the joining technology. The newconcepts in automotive indust1y are presented thatlzave provenacceptable and have been fully implemented.

Jnterdisciplinwy traffic expertise is being increasingly appliedin road traffic. It is not possible to determine whether anaccident had been intentionally set up without such expertise.The interdisciplinary expertise is the result of mutual work ofseveral different interdisciplinary experts. The paper analysesthe basic characteristics of interdisciplinary investigation ofset-up traffic accidents. Special attention has been paid to interdisciplinwyexpertise of set-up traffic accidents involving injuredpersons or fatalities.

The described sub-model is just one small segment of theTraffic Study of the City of Zagreb, in the development of whichnumerous foreign and national experts and institutions tookpart. After comprehensive collection and processing of inputdata, the traffic experts, using the software package 'MVATRIPS' for the analysis and search for optimal solutions to theproblem of traffic system, provided the models of public urbantransit for the future.This paper describes the analysis and assessment of sub-models in road traffic assignment for the morning peak, afternoonpeak and average off-peak hours. The principles of assignmentprocedure have been described as well as the convergencetests. The following has been specified: the users categories,the public transit pre-load, and the passenger car unit(PC U). The key guideline in selecting the route is a generalisedformulation of costs presented in the paper. The procedures ofcalibration and the assessment of the finite model have alsobeen defined according to the screenline flows, link flows, andtravelling times. In the end, the summary is given of the basiccharacteristics of the finite travelling matrices.

The work considers different information systems, includingthe infonnation ~ystems with autonomous units, whichcany all their intelligence around with them, and those withcommunicating units, which infonn the motorist about the currentsituation of the road system by radio or other means. Thesymbols of various messages have three main objectives: to provideinstruction, to warn of oncoming dange1~ or to give adviceregarding parking or looking for altemative routes. When notused for these pwposes, they are used to provide general informationabout the weathe1~ temperature or possible attractions.The in-vehicle information systems fly to assist the motorist indriving, and they are promoted as part of the comprehensive intelligenttransport system.