The focus of this paper is evaluation of public transport (PT) performances. For this purpose the focus is on quantitative performance attributes of tramway network and two levels of the evaluation analysis are defined – the micro and macro level analysis. The two-level evaluation analysis can be used to solve the problem of ambiguity in conclusions about PT performances. The ambiguity appears when the set of collected data is incomplete, misinterpreted, partially analyzed or when some background impacts are neglected. For each level of analysis a set of performance indicators is defined and their mathematical formulations are presented. The selection of indicators is based on the analysis of expected events on the PT vehicle’s itinerary. The applied data collection methodology, necessary for testing of proposed evaluation approach, is described and the results are presented and discussed. It has been found that for a specific case the two-level evaluation analysis can be important for the control of PT performances and transport planning. KEY WORDS: evaluation, public transport performance, micro and macro level analysis, quality of service

Road safety is one of the influential factors in reducing road accidents and the resulting injuries and fatalities. The aim of this study is to determine the safety position of the roads of the Bushehr province based on various quantitative and qualitative criteria. For this purpose, a Multi-Criteria Decision Making (MCDM) approach has been utilized. In this approach, first all criteria influencing road safety in the Bushehr province were classified into main and sub-criteria groups and their weights were obtained using Group Analytic Hierarchy Process (GAHP). Then, the rankings of the Bushehr province roads were calculated through the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS). The results indicate that during the period of investigation, the roads of Bushehr-Borazjan and Borazjan-Genaveh were the best with minor difference and Deylem-Behbahan road was the worst road of this province. In this regard, the criteria of violations/traffic and road facilities contribute more to the results due to their weights. It is clear that continuous evaluation of road safety will have significant effect on governmental policy-makings for improving roads and safety-related actions. KEY WORDS: Roads Safety Coefficient, quantitative and qualitative criteria, Multi Criteria Decision Making (MCDM), GAHP Technique, TOPSIS Method

Recently, many of the foreign traffic-safety analyses point out the low level of traffic safety in multi-lane roundabouts. This problem is resolved in several ways in different countries; however, the solution, whereby the number of conflict points is diminished (e.g. turbo roundabout) has proven to be the most successful. However, the turbo roundabout also has its deficiencies: it has conflict crossing points and larger reconstruction of the existing two-lane roundabout is needed when the turbo roundabout is to be implemented instead of the existing one. In the paper a new type of roundabout has been introduced; the roundabout with “depressed” lanes for right turning (“the flower-roundabout”). Financially speaking, the main advantage of the new type of roundabout is that it can be implemented within the dimensions of the already existing “normal” two-lane roundabout. From the traffic-safety point of view, the main advantage of the new type of roundabout is that it has no crossing conflict points. KEYWORDS: traffic safety, roundabout, turbo roundabout, roundabout with “depressed” lanes for right turn

The key hypothesis of the paper is the existence of a particular impact occurring between the development of mobile telecommunications traffic and the development of postal traffic. The objective of the paper is to ascertain the strength of the impact as well as the nature (type) of the impact in the case of the state of the art in the Republic of Croatia. Relevant data have been collected regarding the number of postal services realised (letters and parcels), minutes referring to duration of the voice conversations within, from and towards mobile networks as well as the number of text messages (SMSs) sent. The interrelations between the postal traffic and mobile telecommunications traffic have been determined following the multi-regression linear modelling which has been statistically tested after having been determined. KEY WORDS: postal traffic, multi-regression modelling, mobile telecommunications traffic

The paper deals with the Zagreb Terminal Airspace capacity. The basic scenario has been modelled using the RAMSPlus simulator and capacity has been calculated by using the WMSE method which takes into account the peak-hour workload based on air traffic controllers’ tasks. The problem of traffic congestion has been analyzed and several case study scenarios have been simulated. The conducted simulations have demonstrated that in the conditions of increased traffic loads (traffic demand amounting to 6% annually) the working technology and the airspace organization of Zagreb Terminal Airspace will become a restricting factor at peak-hour workloads. The new technologies in Zagreb Terminal Airspace (P-RNAV routes and airspace sectorization) will enable the reduction in air-traffic controller’s workload regarding radar vectoring, radio-telephony and coordination tasks. This should increase the airspace capacity and thus enhance the safety and orderly flow of air traffic. KEY WORDS: terminal airspace, capacity, simulation, workload, task, sectorization

This paper deals with the rules and regulations pertaining to the protection of the marine environment from the pollution by vessel’s sewage. There is an international perspective on legal regulations dealing with this matter, but the sensitive marine environment has not been properly covered. Some maritime countries have set forth their own and more strict regulations to provide for a more efficient protection of their marine environments. Having compared the international legal regulations for the protection of the seas from pollution by vessel’s sewage with the regulations of individual countries that have stricter regulations, a certain similarity has been noticed in some criteria, but also significant differences in some other criteria concerning allowed discharge of treated or untreated waste waters from the vessels. Amendments to the valid legal regulations and establishment of new rules pertaining to the marine environment are of particular importance in order to provide for a more effective protection of the seas from the increasing pollution from vessel’s sewage preventing thus the negative influence onto marine organisms, human health and economy. KEY WORDS: sea pollution, sewage, black water, faecal coliform bacteria, suspended solids, sewage treatment plant, convention

The main scope of this paper is to present the historical background and the foreseeable future of the Hungarian road tolling. In the introduction the authors have investigated the historical dataset of motorway constructions and analysed the unequal extension of motorway system in time and space. In this article the authors are considering road tolling as an instrument of financing road infrastructure investment and the maintenance and controlling possibilities of traffic flows. KEYWORDS: road transportation, reduction of travel time, positive external effect

The human-mediated transfer of harmful organisms via shipping, especially via ballast water transport, has raised considerable attention especially in the last decade due to the negative associated impacts. Ballast water sampling is important to assess the compliance with ballast water management requirements (i.e. compliance monitoring). The complexity of ballast water sampling is a result of organism diversity and behaviour which may require different sampling strategies, as well as ship design implications including availability of ballast water sampling points. This paper discusses the ballast water sampling methodologies with emphasis on compliance monitoring by the Port State Control officers according to the International Convention on the Management of Ships’ Ballast Water and Sediments, 2004. KEY WORDS: maritime transport, compliance control, port state control, ballast water sampling, ballast water management

The human-mediated transfer of harmful organisms via shipping, especially via ballast water transport, has raised considerable attention especially in the last decade due to the negative associated impacts. Ballast water sampling is important to assess the compliance with ballast water management requirements (i.e. compliance monitoring). The complexity of ballast water sampling is a result of organism diversity and behaviour which may require different sampling strategies, as well as ship design implications including availability of ballast water sampling points. This paper discusses the ballast water sampling methodologies with emphasis on compliance monitoring by the Port State Control officers according to the International Convention on the Management of Ships’ Ballast Water and Sediments, 2004. KEY WORDS: maritime transport, compliance control, port state control, ballast water sampling, ballast water management