Scientific Journal of Silesian University of Technology. Series Transport

8

Authors: Piotr CZECH, Katarzyna TUROŃ, Jazek BARCIK

The work was dedicated to the subject of innovative autonomous vehicles on the transport market. The paper presents basic information about autonomous cars: a nomenclature characteristic of autonomous vehicles, along with the terms “automatic”, “autonomous”, “self-drive” and “driverless”. The article also presents various types of autonomous cars based on the most popular classifications in the world. The purpose of the work is to present basic issues related to autonomous vehicles.

8

Authors: Andrzej WIĘCKOWSKI

When renovating intensively used bus bays, roads and squares, the need for their periodical closure to traffic during the period of works is inconvenient. In the case of concrete surface repairs, this timeline is additionally elongated due to the standard requirement of a 28-day curing period. The Department of Geomechanics, Civil Engineering and Geotechnics of the AGH University of Science and Technology has investigated the prototype RoadTronic robot to make slabs reinforced with a mesh of glass fibre rods. Process automation permits the application of rapid-setting CSA-based (calcium sulphoaluminate-based) cements, which achieve a compressive strength of over 20 MPa after just 1.5 h. The good properties of such cement have been confirmed by several years of use on the runway at Seattle-Tacoma Airport. Preliminary tests of the early compressive strength of Rapid Set® CSA-based concrete performed at the department, as well as calculations of guaranteed strength, indicate that young concrete can transmit operational load after just 4 h from mixing with water. The investigated solution assures a complete slab following one passage of the robot. This would permit the removal of the existing layer during reduced vehicle traffic, e.g., between 06:00 and 22:00, and the execution of a new abrasive concrete layer by 02:00, so as to restore regular traffic at 06:00.

9

Authors: Vít JANOŠ, Milan KŘÍŽ

In the field of transport planning in the Czech Republic, there is increasing need not only for infrastructure planning, but also for public transport planning and creating operational concepts. Public transport, as well as investments and operationally intensive industries, requires a guaranteed longterm strategy in the field of transport services. The first prerequisite for successful transport planning is the most accurate description of passenger flows, including the parameters affecting the choice of transport mode. These inputs constitute an important basis for the following steps: setting up the line network, timetable design, managing the circulation of vehicles and courses of staff, controlling, and any eventual requests for infrastructure improvements. There are currently, in the Czech Republic, few transport models that provide relevant outputs for transport planning tasks in public services. For this reason, we use a variety of heuristics, one of which is described via a practical example, i.e., the transformation of a timetable concept on a selected rail network, including the effects resulting from a change in the number of passengers.

9

Authors: Grzegorz SIERPIŃSKI, Marcin STANIEK

The concept of an innovative tool for supporting electromobility development is presented in this paper. The main aim is intended to ease the implementation and further development of electromobility in urban and suburban areas. The final outcome of the research is a tool, which includes integrated modules related to travel and charging point location planning and simulation.

11

Authors: Grzegorz DYDKOWSKI1

The paper presents how to apply and use principles of the nonmarket allocation of goods and distribution in public transport systems. In most countries, regional and local public transport is a public service, whose availability should be ensured, with originating deficits financed by the public authorities. In the course of this service provision, problems can result from financing the deficit by various entities, e.g., municipalities and municipality groups, as well as participation by district and voivodeship self-governments in agreements related to the common organization of public transport and unified tariff-ticket systems. Based on local justice theory, this paper sets out principles that can be the foundation of deficit financing system development, including the analysis of their practical application to financing integrated public transport systems.

11

Authors: Radovan MADLENAK, Silvia DUTKOVA, Dominika HOSTAKOVA, Branislav SARKAN

This paper presents an optimization analysis of a queuing system for a particular post office as a tool to increase system reliability. The consideration of system reliability in terms of queuing system failures is very relevant. One way to increase reliability is to analyse the system and its parameters in order to identify its most critical flaws. We used the chi-squared goodness-of-fit test based on the validation of a null hypothesis over an alternative hypothesis. The purpose of the test was to verify the correspondence of the measured data with a theoretical probability distribution. Measurements of relevant data were performed on the specific post office that represented the subject of our research. This approach proved to be a powerful tool in system analysis and optimization. The results of such an analysis can serve as the basis for the modelling of queuing systems.

12

Authors: Jakub WNOROWSKI, Andrzej ŁEBKOWSKI

New technology in the maritime sector often forces shipowners to assemble many new devices on their ship, which can increase the safety of sea travel. With each additional device on the navigation bridge, there are additional sets of data that need to be observed. The following article describes one of the possibilities of using augmented reality technology to support navigational decisions. The research used “smartglasses” technology and AR glasses from Meta Glasses.

14

Authors: Maciej MINDUR

The paper addresses the changes on one of the largest continents, Africa, in aspect of transport systems and the economy. The African Union is a chance to integrate this area from many points of view. Infrastructure, the economic grow rate and transport development were also analysed.

16

Authors: Marek RUTKOWSKI

The aim of this article is to present the main proposals of two Tsarist Russia transportation laws, introduced in the spring of 1833 and at the turn of 1834. Both laws were prepared by Count Dmitry Bludov, then Minister of the Interior, and finally accepted by Tsar Nicholas I himself. Their main goal was to properly develop the Russian transportation network, but not too rapidly and without consuming a considerable amount of State Treasury funds.