• Increased risks of impact on the environment of Poti and Kulevi sea ports

    pg(s) 120-121

    Based on the status of the maritime country of Georgia, we studied the increasing risks of the pollution by the ballast water and wastewater volume increase in the sea caused by the volume of freight turnover of Poti and Kulevi sea ports. For this, we conducted research in two directions: on the sensitive areas of Kulevi and Poti pipeline terminals and ships in the port. We first examined ecological parameters: namely water relative temperature, water acidity (pH) and salinity (TDS) quantitative indicators as in the stationary, also in non-stationary conditions. The results of the laboratory survey of water samples indicate that the relative temperature (t1 / t2) of Poti (t1 / t2) 0,87 acidity (pH) 8.34, salinity (TDS) 15,60 Relative temperature of turbocharging (t1 / t2) 0,87, acidity (pH) 8.37, salinity (TDS) 15,12
    Secondly, on the ships entered in the ports, we took as ballast and wastewater samples and analyzed in accordance with the legislation:
    1. Ballast water analysis from tanker “Metin K” from Kulevi, shows that increased nitrogen +6 mg / l, oilseeds +0.7 mg / l, nitrates 1,3 mg / l and nitrites- 0,35 mg / l
    2. Poti Port – N 5 Ventilation Examples of Weight Watchers Examples of Weighted Particles 4.0 mg / l, Ammonium 1,67 mg / l of ballast water analysis shows that the total amount of oil nitrogen is 0.6 mg / l, + 0.7 mg / L, nitrates 1,3 mg / ld nitrites – 0,35 mg / l.
    As a result of these two studies, based on reliability and risk theory of Kulevi, the mean value of salinity (TDS) is equal to: 10,85, for Poti port, the mean value of salinity (TDS) is equal to 12,34.
    In the theoretical and laboratory studies we have identified the risks of contamination of ports and waste water pollution.

  • Transit capacities of the South Caucasus transport corridor

    pg(s) 117-119

    The volume of trade between East and West of the Eurasian continent takes place on the numerous routes. However, the Europe-Caucasus-Asia (TRACECA) transport corridor is most known to the world community.

    The TRACECA program projects involve the integrated development of sea, railway and road transport. As the consolidating measures, the central concern is the unification of transport legislation of the participating countries, the liberalization of regulation of shared services, the solution of common market and social problems in the area of the environment, security and international integration.

    Time of delivery, as well as transportation costs through the Europe-Caucasus-Asia corridor depend upon the successful solution of these challenges.

  • First aid to the victims of road accidents in the evacuation process

    pg(s) 114-116

    The statistics demonstrate that giving the qualified first aid at the scene before admission is is significantly less frequently than would be expected.

    Medical care at the pre-hospital stage is of particular importance in cases of manifest circulatory and respiration disturbances, clinical death, bleeding, fractures, when a failure or delay to render assistance quickly leads to a significant deterioration of the body condition and even death.

    The majority of the victims die at the pre-hospital stage, resulting in high importance of qualified first aid in the first moments after injury

  • Influence of liberalization on long-distance rail transport in the Czech Republic

    pg(s) 111-113

    In the Czech Republic, the rail transport market has been liberalized for several years – in addition to public services, commercial services of individual rail carriers operate too. Public services in long-distance rail transport are ordered by the Czech Ministry of Transport. In December 2019, the 10-year contract between Czech Ministry of Transport and Czech Railways will end. The approaching end of this contract was connected with great interest of other rail carriers, which led to the fact, that the Czech Ministry of Transport demanded individual long-distance rail lines in the form of so called “market consultations”. Preparing of the operational performance of individual long-distance rail lines for the needs of market consultations was a great challenge on the field of transport-planning. As a result, from December 2019 there will operate 4 different rail carriers in ordered long-distance rail transport in The Czech Republic and this situation is unique in its form and unparalleled throughout the EU.

  • VEHICLE PRODUCTIVITY IN NEW OPERATED RAIL-SERVICES

    pg(s) 185-187

    For newly introduced transport services, there´s not only the transport aspect that matters what the new service will bring to passengers, but also the operating costs are very important. In this area the systematic timetable planning plays an important role. Total costs of the transport system are significantly affected by the fixed costs, deriving from the number of regular deployed vehicles and drivers, related to the overall transport performance and total operational productivity. Advanced timetable engineering means a strong link between timetables, vehicles and infrastructure. The article demonstrates this approach on the example of the introduction of new express trains Praha – Plzeň – Cheb / München in the timetable 2017/18.

  • LINE TRACK CAPACITY – ANALYSIS OF THE IMPLEMENTATION OF THE UIC 406 METHODOLOGY IN ŽSR CONDITIONS

    pg(s) 181-184

    A variety of A variety of methodologies are used across Europe for the estimation of railway infrastructure capacity. This paper introduces the basic principles of the analytical methodology (e.g. Slovak railways) and UIC methodology. On the basis of these new approaches, dependencies between occupation time and buffer time is researched. The aim is to compare the needed buffer time and its impact to the line capacity.

  • EXPRESSION OF RISK THROUGH TARIFF POLICY IN RAIL PASSENGER TRANSPORT

    pg(s) 173-176

    Risk analysis is a process with a detailed identification of risks, determine their range and examines the interaction of these risks. Each process or human activity are influenced by many risks. As well as in rail transport there are many risks which hare accrue from the operation. Risk is defined as the chance that something will happen what will affect the goals and is measuring by results or estimate. We can also risk defined as the product of the likelihood of an adverse event (phenomenon) and consequences (outcomes). On one side is the risk connected with the hope of achieving a good financial results, but on the other side with the danger of business failure that brings losses. The aim of this paper is the proposal of a tariff taking into account the risk from unoccupied capacity of passenger trains. Pricing of selected risk we will eliminate this adverse event.

  • APPLICATION OF GEOGRAPHICAL INFORMATION SYSTEMS TO EVALUATION A CONCENTRATION OF CHLORINE RELEASED INTO AN ATMOSPHERE IN THE CASE OF ROAD ACCIDENT

    pg(s) 169-172

    Modelling propagation of hazardous substances released in road accidents is important issue from the point of view of safety in road transport. The paper presents use of the Geographic Information Systems to analyse the impact of the emissions of hazardous compounds in the built-up area. In the paper dispersion of pollutants released in a road accident, involving a chlorine tanker truck, followed by chlorine spillage has been analysed. It is assumed that the accident took place in a mountainous area on a bypass within a built-up area. Concentrations of pollutant have been calculated in the own program. The calculation of field of wind speed was taking into account the terrain elevation and type of land cover. The package Idrisi Taiga has been applied in the pre-processing stage. It was used to generate a site map with buildings and aerodynamic roughness map. Meteorological conditions were also taken into account: wind speed and direction, temperature, atmospheric pressure and atmospheric stability class. The computer program consist two basic modules: diagnostic model of air velocity field and Lagrangian model of particles, being the original implementation of the Lagrange model of particles. In both models, some elements of mathematical modelling were applied. The models have been successfully validated and verified. The results of the calculations of concentrations of chlorine have been analysed in the Geographic Information System. The following analyses have been made, among others: designation of hazardous zones AEGL 1-3, determination spatial size of built-up areas within the zone, analysis of changes in pollution concentrations over time. The proposed analyses allows to determine areas exposed to deadly and highly dangerous concentration of chlorine.

  • IMPACT OF TECHNICAL VALIDITY MOTORCYCLE FOR ROAD SAFETY IN THE REPUBLIC OF CROATIA

    pg(s) 166-168

    The road traffic safety factor is divided into three basic groups: human, vehicle, road (infrastructure). Technically defective, poorly maintained and technologically obsolete vehicles endanger road safety. The number of technically defective vehicles that are involved in traffic accidents, when checks are carried out by officers of traffic police, is 0.2%. Considering that 21.31% of vehicles are found to be defective by periodical technical inspections of vehicles (PTI), it is expected that the number of technically defective vehicles in daily traffic is considerably higher. By analyzing the data collected by PTI and comparing them with the data obtained during the conducted research “Inspection of the technical safety of vehicles involved in road traffic accidents with fatalities” the real state of the technical condition and safety of vehicles on the roads in the Republic of Croatia is presented here. Two-wheel vehicles (mopeds and motorcycles) represent a particularly risky group.

  • THE NUMERICAL INVESTIGATION OF HIGH SPEED TRAIN-TUNNEL INTERACTION AT ENTRANCE AND EXIT

    pg(s) 135-137

    In the study, the flow pattern due to the interaction between a high-speed train and the tunnel at the model scale was analyzed. Six different tunnel entry geometries were used variably for a single train speed. The most important issues as a condition of comfort in high speed trains are noise and vibration. In particular, flow-induced noise is triggered by pressure changes in the flow. For each geometry, the pressure changes at the tunnel entrance and at the tunnel exit are plotted with depending on time. As a result, the least amount of pressure change was found in the tunnel entrance model with openings in the side walls.

  • A PORT COMMUNITY SYSTEM OF GEORGIA AND ITS ROLE IN WORLD MARITIME TRANSPORT

    pg(s) 131-134

    Ports constitute one of the most important nodes of transport networks, and they represent the border control points and the freight handling points, the administrative service centers, place of the implementation of trade procedures, as well as the link connecting the land and maritime routes. The functioning of the international transport corridor depends to a large extent on the ports and maritime transport efficiency.
    Despite significant investments, the operations of port and ships are mostly non-standard, which hinders the development of the maritime transport sector. However, infrastructure is not the major obstacle to maritime transport development. National regulatory policy should be revised in keeping with the growing popularity of the concept of economic globalization and supply network. It is necessary to reform the relevant roles of the private sector and the State, where the latter is represented by stateowned companies and state monopolies.