Wyniki wyszukiwania dla: TRAFFIC
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Video traffic data - Interchange Lotnisko (S2-S79) - Exit +entry lanes, Poland
Dane BadawczeThe data includes video traffic data registered with 8 video cameras at entry or exit lanes of the Lotnisko interchange within S2 expressway in Poland (interchange of expressway S2 and expressway S79), located in the Warsaw Agglomeration. The data covers the one day: 05.09.2017 (expressway S2).
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Video traffic data - Interchange Lotnisko (S6-472) - Exit +entry lanes, Poland
Dane BadawczeThe data includes video traffic data registered with 6 video cameras at entry or exit lanes of the Lotnisko interchange within S6 expressway in Poland (interchange of expressway S6 and regional road 472), located in the Tri-City Agglomeration. The data covers the two days: 10.04.20187 and 12.04.2017(expressway S6).
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Video traffic data - Interchanges Bielany (A4-5) - exit+entry lanes, Poland
Dane BadawczeThe data includes video traffic data registered with 12 video cameras at entry or exit lanes of the Bielany interchange within A4 motorway in Poland (interchange of motorway A4 and nacional road 5), located in the Wroclaw Agglomeration.The data covers the two days: 06.06.2017 and 08.06.2017 (motorway A4).
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Skład zanieczyszczeń wprowadzanych do środowiska wzdłuż dróg o różnym natężeniu ruchu pojazdów mechanicznych = Composition of pollutants in the water samples collected along the highways with different traffic intensity
PublikacjaProwadzono monitoring poziomu stężeń wybranych zanieczyszczeń w próbkach wód opadowych, spływnych, gruntowych i rzecznych, pobieranych wzdłuż dróg o różnym natężeniu ruchu pojazdów. Zlokalizowano pięć stałych punktów pobierania próbek wzdłuż dwóch szlaków komunikacyjnych; drogi o małym natężeniu ruchu nr 501 w miejscowości Sztutowo oraz wzdłuż drogi krajowej nr A7 na odcinku Nowy Dwór Gdański - Elbląg. Próbki pobierano przez okres...
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Video traffic data - Interchange Piotrkow Trybunalski East (S8-12), exit lane, Poland
Dane BadawczeThe data includes video traffic data registered with 3 video cameras at exit lane of the Piotrkow Trybunalski East interchange within S8 expressway in Poland (interchange of expressway S8 and national road 12), located in the Piotrkow Trybunalski area. The data covers the one day: 21.06.2017 (expressway S8).
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Transportation Research Part F: Traffic Psychology and Behaviour
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Review and evaluation of cold recycling with bitumen emulsion and cement for rehabilitation of old pavements
PublikacjaThe article presents Polish experience with cold recycling of asphalt pavements with theusage of bituminous emulsion and cement. In the 1990s numerous roads in Polandrequired immediate reinforcement due to their significant degradation. Implementation ofthe cold recycling technology was one of the solutions to this problem. Cold recycledmixtures containebeside the recycled asphalt pavement and aggregateetwo differenttypes of binding...
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Towards a decision support system for maritime navigation on heavily trafficked basins
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A new factor LapD is required for the regulation of LpxC amounts and lipopolysaccharide trafficking
PublikacjaLipopolysaccharide (LPS) constitutes the major component of the outer membrane and is essential for bacteria, such as Escherichia coli. Recent work has revealed the essential roles of LapB and LapC proteins in regulating LPS amounts; although, if any additional partners are involved is unknown. Examination of proteins co-purifying with LapB identified LapD as a new partner. The purification of LapD reveals that it forms a complex...
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Anti-Trafficking Review
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Journal of Human Trafficking
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Heart and mind in public transport: Analysis of motives, satisfaction and psychological correlates of public transportation usage in the Gdańsk–Sopot–Gdynia Tricity Agglomeration in Poland
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The motif EXEXXXL in the cytosolic tail of the secretory human proprotein convertase PC7 regulates its trafficking and cleavage activity
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Driver influence on tyre/road noise generated by vehicle in road traffic.Wpływ kierowcy na hałas generowany przez pojazd w ruchu drogowym.
PublikacjaW pracy omówiono wkływ stylu jazdy kierowcy oraz stanu technicznego wybranych zespołów pojazdu na jego hałas generowany w ruchu drogowym. Wpływ został przeanalizowany w aspekcie takich parametrów, jak: prędkość jazdy, obciążenie kół siłami wzdłużnumi i poprzecznymi, ciśnienie w ogumieniu, obciążenie pionowe kół, zbieżność i inne.
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Wojciech Kustra dr inż.
OsobyI am a Faculty member (Assistant Professor, Highway and Transportation Engineering Department) at the Faculty of Civil and Environmental Engineering, Gdansk University of Technology, Poland). My main research interests include: road safety, accident analysis, traffic modeling, transportation planning, traffic engineering, transport management, gis analysis.
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Jacek Oskarbski dr hab. inż.
OsobyAssociate professor (D.SC.Eng.) in the Department of Civil Engineering at the Gdansk University of Technology. Main research areas are traffic modeling and forecasting, transport planning, intelligent transport systems, traffic engineering, and mobility management. A graduate of the University (1994). He worked as road planner in BPBK and Transprojekt Gdański Office (1993-1996). Pposition of assistant in the Highway Engineering...
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Joanna Żukowska dr hab. inż.
OsobyJoanna Żukowska (ur. 15.12.1974 r. w Kwidzynie) – specjalista inżynierii drogowej i bezpieczeństwa transportu. Prowadzi badania w zakresie zarządzania bezpieczeństwem transportu, a także polityki transportowej w kontekście zdrowia publicznego. Głównymi obszarami jej zainteresowań naukowych są: modelowanie ryzyka w ruchu drogowym, prognozowanie trendów bezpieczeństwa oraz programowanie i wdrażanie systemów zarządzania bezpieczeństwem...
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Sylwester Kaczmarek dr hab. inż.
OsobySylwester Kaczmarek ukończył studia w 1972 roku jako mgr inż. Elektroniki, a doktorat i habilitację uzyskał z technik komutacyjnych i inżynierii ruchu telekomunikacyjnego w 1981 i 1994 roku na Politechnice Gdańskiej. Jego zainteresowania badawcze ukierunkowane są na: sieci IP QoS, sieci GMPLS, sieci SDN, komutację, ruting QoS, inżynierię ruchu telekomunikacyjnego, usługi multimedialne i jakość usług. Aktualnie jego badania skupiają...
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Jakub Montewka dr hab. inż.
OsobyJakub Montewka is an associate professor at Gdańsk University of Technology in Poland and visiting processor at Aalto University in Espoo, Finland and Wuhan University of Technology in China. Jakub is researching in the field of maritime traffic risk and safety. His primary interests lie in the risk assessment of maritime transportation, quantification of safety of maritime navigation, route optimization for ships in ice-covered...
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Karol Żarski mgr inż.
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Aleksandra Romanowska dr inż.
OsobyPracownik Katedry Inżynierii Drogowej i Transportowej na Wydziale Inżynierii Lądowej i Środowiska Politechniki Gdańskiej. Realizuje prace badawcze z zakresu modelowania ruchu drogowego, bezpieczeństwa ruchu drogowego, funkcjonowania dużych generatorów ruchu w strukturze miast, zachowań i preferencji transportowych społeczności akademickich, planowania zrównoważonej mobilności miejskiej. W 2019 roku uzyskała stopień doktora nauk...
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Jerzy Konorski dr hab. inż.
OsobyJerzy Konorski otrzymał tytuł mgr inż. telekomunikacji na Poitechnice Gdańskiej, zaś stopień doktora n.t. w dyscyplinie informatyka w Instytucie Podstaw Informatyki PAN. W r. 2007 obronił rozprawę habilitacyjną na Wydziale Elektroniki, Telekomnikacji i Informatyki PG. Jest autorem ponad 150 publikacji naukowych, prowadził projekty naukowo-badawcze finansowane ze środków Komitetu Badań Naukowych, UE, US Air Force Office of Scientific...
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Counting and tracking vehicles using acoustic vector sensors
PublikacjaA method is presented for counting vehicles and for determining their movement direction by means of acoustic vector sensor application. The assumptions of the method employing spatial distribution of sound intensity determined with the help of an integrated 3D intensity probe are discussed. The intensity probe developed by the authors was used for the experiments. The mode of operation of the algorithm is presented in conjunction...
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Modelling Signalised Intersections Reliability of Functioning
PublikacjaThe article addresses a fundamental aspect of traffic, i.e. the operation of traffic signals at intersections, in reference to the reliability theory. In many cases, when intersections carry substantial amounts of traffic, selecting control parameters to produce satisfactory traffic conditions is quite difficult. Design methods do not cover all possible situations which are the result of intersection geometry and location...
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Examining the Impact of Distance Between VSL Road Signs on Vehicle Speed Variance
PublikacjaVariable speed limit (VSL) is an intelligent transportation system (ITS) solution for traffic management. The speed limits can be changed dynamically to adapt to traffic conditions such as visibility and traffic volume, curvature, and grip coefficient of the road surface. The VSL traffic sign location problem and attempts to solve it using computer simulation are presented in this paper. Experiments on a selected road segment,...
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ANALYSIS OF POSSIBILITIES FOR THE USE OF VOLUME-DELAY FUNCTIONS IN THE PLANNING MODULE OF THE TRISTAR SYSTEM
PublikacjaTravel time is a measure commonly used for traffic flow modelling and traffic control. It also helps to evaluate the quality of traffic control systems in urban areas. Traffic control systems that use traffic models to predict changes and disruptions in vehicle flows have to use vehicle speed-prediction models. Travel time estimation studies the effects of traffic volumes on a street section at an average speed. The TRISTAR Integrated...
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Development of the New Polish Method for Capacity Analysis of Motorways and Expressways
PublikacjaThe paper presents development of the new Polish method for performing capacity analysis of basic segments of dual carriageway roads (motorways and expressways). The method is based on field traffic surveys conducted at 30 motorway and expressway sites (class A and S roads) in Poland. Traffic flows, composition and travel times were observed in 15-min intervals at each site using ANPR filming method. These data were used to calibrate...
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Dynamic unattended measurement based routing algorithm for diffServ architecture
PublikacjaDynamic routing is very important in terms of assuring QoS in today's packet networks especially for streaming and elastic services. Existing solutions dedicated to dynamic routing are often too complicated and seem to be not usable in real time traffic scenarios where transferred traffic may vary significantly. This was the main reason for research and new routing mechanism proposal which should apply to today's packet networks....
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Dongdong Liu Ph.D.
OsobyHis research interests include traffic organization, abnormal detection, fundamental study of traffic flow on the sea, ship collision avoidance, and collision risk assessment.
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New polish catalogue of typical flexible and semi-rigid pavements
PublikacjaThe paper covers the following topics important for the development of the new Polish Catalogue of typical flexible and semi-rigid pavements: reasons for preparing the new issue of the Catalogue of typical flexible and semi-rigid pavements, items introduced in the new issue, organise the terminology related to pavements, design traffic calculations and new equivalent axle load factors,...
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Use of Data from Satellite Navigation System in Operational and Strategic Management of Transport in Cities
PublikacjaThe article presents the possibilities of using data from the Global Positioning System for the development of traffic models and examples of use this data in the transport management. Traffic models are useful tools in planning and evaluation of transport solutions, but also can be used for current, operational transport management.
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Gdańsk 2019 Jana z Kolna street - video data
Dane BadawczeGdańsk 2019 Jana z Kolna street - video data
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Detection of vehicles stopping in restricted zones in video from surveillance cameras
PublikacjaAn algorithm for detection of vehicles that stop in restricted areas, e.g. excluded by traffic rules, is proposed. Classic approaches based on object tracking are inefficient in high traffic scenes because of tracking errors caused by frequent object merging and splitting. The proposed algorithm uses the background subtraction results for detection of moving objects, then pixels belonging to moving objects are tested for stability....
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Białowieża primeval forest as an example of transfrontier co-operation between Poland and Bielarus
PublikacjaThe Polish Ministry of Foreign Affairs is completing their work on the agreement on local border traffic (May 2009.) At the final stage of the works, the list of the towns and villages situated within the area covered by the so-called "local traffic" on both the Polish and the Belarusian sides of the border is being verified. The "border belt" area, whose residents will be able to move between the bordering countries under the...
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Identification of Risk Factors for Collisions Involving Cyclists Based on Gdansk Example
PublikacjaThe role of pedestrian and bicycle traffic in Poland has growing trend. The comprehensive traffic study, conducted in Gdansk in 2016, has confirmed the increase in the number of cyclists and their share in the modal split. Therefore, it is particularly important to ensure the safety of this group of unprotected road users. Only in 2015 on the roads of Gdansk occurred 93 accidents (excluding collisions) involving cyclists. As a...
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Analysis of the causes and effects of cyclist-pedestrian accidents in biggest Polish cities
PublikacjaTraffic incidents between pedestrians and cyclists result in an incomparably smaller number of victims (injured and killed) than accidents between unprotected traffic participants and other vehicles. However, such incidents cannot be underestimated, as in most cases they take place on elements of infrastructure designed for pedestrians and cyclists, and thus negatively affect the sense of safety of users in places where they...
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Measures of Functional Reliability of Two-Lane Highways
PublikacjaRural two-lane highways are the most common road type both in Poland and globally. In terms of kilometres, their length is by far greater than that of motorways and expressways. They are roads of one carriageway for each direction, which makes the overtaking of slower vehicles possible only when there is a gap in the stream of traffic moving from the opposite direction. Motorways and express roads are dual carriageways that are...
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Starogard Gdański 2019, Lubichowska - Pomorska street - video data - pedestrian, bicycles, vehicles
Dane BadawczeThe data contain video traffic data (pedestrian, cyclists, vehicles) registered at Lubichowska street. Date 06.2019, 6:00-18:00. The video camera was installed around intersections at Lubichowska and Pomorska street. Camera was mounted on 7-meter-high mast.
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Starogard Gdański 2019, Tadeusza Kościuszki – Ignacego Paderewskiego street - video data - pedestrian, bicycles, vehicles
Dane BadawczeThe data contain video traffic data (pedestrian, cyclists, vehicles) registered at Kościuszki street. Date 13.06.2019, 6:00-18:00. The video camera was installed around intersections at Kościuszki and Paderewskiego street. Camera was mounted on 7-meter-high mast.
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Starogard Gdański 2019, Lubichowska – Kościuszki - Chojnicka street - video data - pedestrian, bicycles, vehicles
Dane BadawczeThe data contain video traffic data (pedestrian, cyclists, vehicles) registered at Lubichowska street. Date 13.06.2019, 6:00-18:00. The video camera was installed around intersections at Lubichowska Kościuszki and Chojnicka street. Camera was mounted on 7-meter-high mast.
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Starogard Gdański 2019, Pomorska - Pelplińska street - video data - pedestrian, bicycles, vehicles
Dane BadawczeThe data contain video traffic data (pedestrian, cyclists, vehicles) registered at Pomorska street. Date 13.06.2019, 6:00-18:00. The video camera was installed around intersections at Pomorska and Pelplińska street. Camera was mounted on 7-meter-high mast.
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Starogard Gdański 2019, Pomorska – Tadeusza Kościuszki street - video data - pedestrian, bicycles, vehicles
Dane BadawczeThe data contain video traffic data (pedestrian, cyclists, vehicles) registered at Kościuszki street. Date 13.06.2019, 6:00-18:00. The video camera was installed around intersections at Pomorska and Tadeusza Kościuszki street. Camera was mounted on 7-meter-high mast.
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Starogard Gdański 2019, Tadeusza Kościuszki – Jana Sobieskiego street - video data - pedestrian, bicycles, vehicles
Dane BadawczeThe data contain video traffic data (pedestrian, cyclists, vehicles) registered at Tadeusza Kościuszki street. Date 13.06.2019, 6:00-18:00. The video camera was installed around intersections at Tadeusza Kościuszki and Jana Sobieskiego street. Camera was mounted on 7-meter-high mast.
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Starogard Gdański 2019, Tadeusza Kościuszki - Pelplińska street - video data - pedestrian, bicycles, vehicles
Dane BadawczeThe data contain video traffic data (pedestrian, cyclists, vehicles) registered at Tadeusza Kościuszki street. Date 13.06.2019, 6:00-18:00. The video camera was installed around intersections at Tadeusza Kościuszki and Pelplińska street. Camera was mounted on 7-meter-high mast.
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Starogard Gdański 2019, Tadeusza Kościuszki – aleja Jana Pawła II street - video data - pedestrian, bicycles, vehicles
Dane BadawczeThe data contain video traffic data (pedestrian, cyclists, vehicles) registered at Kościuszki street. Date 13.06.2019, 6:00-18:00. The video camera was installed around intersections at Kościuszki and Jana Pawła II street. Camera was mounted on 7-meter-high mast.
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The effects of selected factors on pedestrian crossings in urban areas
PublikacjaPedestrian crossings are designed to help pedestrians cross a road. There are at-grade pedestrian crossings with or without traffic lights and grade separated crossings such as subways and footbridges. Pedestrian crossings may be located next to a junction or on road sections between junctions. Where at-grade crossings are involved, pedestrians and motorists interact, which may lead to dangerous situations and road traffic conflicts....
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Gdańsk Abrahama 2017 - video data
Dane BadawczeGdańsk Abrahama 2017 - video data
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Starogard Gdański 2019, Pomorska – Aleja Jana Pawła II street - video data - pedestrian, bicycles, vehicles
Dane BadawczeThe data contain video traffic data (pedestrian, cyclists, vehicles) registered at aleja Jana Pawła II street. Date 13.06.2019, 6:00-18:00. The video camera was installed around intersections at Pomorska and Aleja Jana Pawła II street. Camera was mounted on 7-meter-high mast.
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DW214 Kościerzyna- Nowa Kiszewa 2020- video data
Dane BadawczeDW214 Kościerzyna- Nowa Kiszewa 2020- video data
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Starogard Gdański 2019, Aleja Niepodległości, Pomorska and Mikołaja Kopernika street - video data - pedestrian, bicycles, vehicles.
Dane BadawczeThe data contain video traffic data (pedestrian, cyclists, vehicles) registered at Aleja Niepodległości street. Date 13.06.2019, 6:00-18:00. The video camera was installed around intersections at Aleja Niepodległości – Galeria Neptun street and Pomorska – Mikołaja Kopernika street. Camera was mounted on 7-meter-high mast.
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Examining Impact of Speed Recommendation Algorithm Operating in Autonomous Road Signs on Minimum Distance between Vehicles
PublikacjaAn approach to a new kind of recommendation system design that suggests safe speed on the road is presented. Real data obtained on roads were used for the simulations. As part of a project related to autonomous road sign development, a number of measurements were carried out on both local roads and expressways. A speed recommendation model was created based on gathered traffic data employing the traffic simulator. Depending on...
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DK22-DK91 Bałdowo 2018 - video data
Dane BadawczeDK22-DK91 Bałdowo 2018 - video data
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Gdynia 2019 - video data - pedestrian, bicycles, vehicles
Dane BadawczeGdynia 2019 - video data - pedestrian, bicycles, vehicles
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Times Series Analysis Of Road Safety Trends At The Regional Level In Poland
PublikacjaThe paper presents possibility of applying a structural times series modeling with explanatory and intervention variables as a tool capable for explaining the changes in the monthly number of fatalities and seriously injured in traffic accidents. The analysis covers regional level and takes into consideration traffic accidents data of two regions: Pomorskie and Warmia-Mazury. In addition short-term forecasts for the two regions...
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APPLICATION OF THE GWR MODEL FOR PREDICTING THE ROAD FATALITIES RATE ON THE ROAD NETWORK IN THE NUTS 3 REGIONS IN EUROPE ON THE EXAMPLE OF KUYAVIAN- -POMERANIAN VOIVODESHIP
PublikacjaThe article presents the application of the GWR (Geographically Weighted Regression) model to the description of differences in the level of road traffic safety in individual counties on the example of the Kuyavian-Pomeranian Voivodeship. The GWR model developed for counties, taking into account the diversity of NUTS 3 regions, can be a helpful tool for traffic safety management in voivodships and lower administrative units, and...
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Identification of safety hazards and their sources in tram transport
PublikacjaBoth in Poland and in most countries of the European Union, the tram infrastructure is extensively expanding. Contemporary low-floor trams are constructed according to different technical assumptions than typical railway vehicles or high floor trams. In Poland such vehicles rides often on lines designed according to standards developed to the classical vehicles. At the same time, the intensity of road traffic and the number of...
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Modeling the effect of electric vehicles on noise levels in the vicinity of rural road sections
PublikacjaNumerous European countries experience a steady increase in the share of electric (EV) and hybrid electric (HEV) vehicles in the traffic stream. These vehicles, often referred to as low- or zero-emission vehicles, significantly reduce air pollution in the road environment. They also have a positive effect on noise levels in city centers and in the surroundings of low-speed roads. Nevertheless, issues related to modeling noise from...
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Research on protection mechanisms of Resilient Packet Ring Network.
PublikacjaPaper describes iSteering - a new method to control traffic in case of RPR network failure. There's comparison of packet wrapping, steering and our proposed method iSteering, which can be used in case of transmitter/receiver or fiber failure. Numerical analysis for even and random traffic flow has been made in order to compare packet wrapping, steering and iSteering. The results of all the tests are included.
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Growing role of walking and cycling and the associated risks
PublikacjaIncreasing the role of active mobility, including walking and cycling, is one of the tools for developing sustainable urban transport systems as recommended by the EU. The article describes the trends in pedestrian and bicycle traffic in Poland and its share in urban modal split. It identifies and describes the main sources of risks to pedestrian and cycle safety. Recommendations are...
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Automatic Incident Detection at Intersections with Use of Telematics
PublikacjaWhile there are many examples of Intelligent Transport System deployments in Poland, more attention should be paid to traffic incident management and detection on dual-carriageways and urban street networks. One of the aims of CIVITAS DYN@MO, a European Union funded project, is to use TRISTAR (an Urban Transport Management System) detection modules to detect incidents at junctions equipped with traffic signals. First part of paper...
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Estimation of Average Speed of Road Vehicles by Sound Intensity Analysis
PublikacjaConstant monitoring of road traffic is important part of modern smart city systems. The proposed method estimates average speed of road vehicles in the observation period, using a passive acoustic vector sensor. Speed estimation based on sound intensity analysis is a novel approach to the described problem. Sound intensity in two orthogonal axes is measured with a sensor placed alongside the road. Position of the apparent sound...
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Enhancing Resilience of FSO Networks to Adverse Weather Conditions
PublikacjaOptical wireless networks realized by means of gigabit optical wireless communication (OWC) systems are becoming, in a variety of applications, an important alternative, or a complementary solution, to their fiber-based counterparts. However, performance of the OWC systems can be considerably degraded in periods of unfavorable weather conditions, such as heavy fog, which temporarily reduce the effective capacity of the network....
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Studying the Behaviour of Pedestrians and Drivers Within Pedestrian Crossings
PublikacjaEvery third road accident in Poland involves a pedestrian as a participant or, most of the time, a casualty. Pedestrian accidents are usually the result of complex situations and the outcome of a number of factors related to driver and pedestrian behaviour and road infrastructure. Safety depends largely on how well the traffic condition is perceived and on visibility in traffic. The re-lations between pedestrians and motorists...
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MODEL FOR MEASUREMENT OF FLOW INSTALLATION TIME IN SDN SWITCH
PublikacjaSDN is the approach in telecommunication networks that separates control plane from data forwarding plane by specifying a single network entity as a controller that defines rules (called flows) of traffic forwarding for the switches connected to it. The time that is required for installation of these rules might be a hindrance for the overall performance of SDN network. In the paper, a model for testing and evaluating the influence...
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Comparison of centralized and decentralized preemption in MPLS networks
PublikacjaPreemption is one of the crucial parts of the traffic engineering in MPLS networks. It enables allocation of high-priority paths even if the bandwidth on the preferred route is exhausted. This is achieved by removing previously allocated low-priority traffic, so as enough free bandwidth becomes available. The preemption can be performed either as a centralized or a decentralized process. In this article we discuss the differences...
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Integrated Control in High-Speed Networks Using Constrained Model Predictive Control
PublikacjaThis paper studies congestion control in high-speed communication networks using Model Predictive Control (MPC). Network traffic is assumed to consist of best-effort and priority traffic sources. An integrated controller consisting of two control parts is designed. The controller calculates the capacity for priority sources and the input rate of best-effort sources. MPC is desirable as it can take into account the constraints on...
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Architecture and Basic Assumptions of RSMAD
PublikacjaThe study presents the architecture of Radio System for Monitoring and Acquisition of Data from Traffic Enforcement Cameras (in short RSMAD) which is used for transmission (realized using GSM, UMTS or TETRA networks, and through the Internet network), archiving and exploring image data of traffic offenses. The paper also presents selected basic assumptions of the RSMAD system, which are relevant to the implemented by the system...
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Capacity analysis of the selected track system in partially ordered space
PublikacjaA proper location of the interval sections has significant impact on the traffic flow in the railway track network. This issue is critical during line modernization as well as when a new solution accounting for the traffic forecast at particular element of the railway track network is developed . However, the situation is more complex and more expensive for railway stations since improvement of the capacity requires critical organizational...
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Estimation of the Regenerative Braking Process Efficiency in Electric Vehicles
PublikacjaIn electric and hybrid vehicles, it is possible to recover energy from the braking process and reuse it to drive the vehicle using the batteries installed on-board. In the conditions of city traffic, the energy dissipated in the braking process constitutes a very large share of the total resistance to vehicle motion. Efficient use of the energy from the braking process enables a significant reduction of fuel and electricity consumption...
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Impact of SDN Controller’s Performance on Quality of Service
PublikacjaSoftware Defined Networking is a paradigm in network architecture; that is quickly becoming commonplace in modern telecommunication systems. It facilitates network customization for the requirements of different applications and simplifies the implementation of new services. Since its proposal, a significant evolution in its functionality has occurred. However, this development brought along problems of efficiency and performance,...
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Polish motorways 2016 - video data
Dane BadawczePolish motorways 2016 - video data
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Simulation model for evaluation of QoS routing algorithm in large packet networks
PublikacjaThe variety of traffic transferred via current telecommunication networks includes also voice, which should meet quality requirements. One of mechanisms, which can support QoS in current packet networks, is routing. There exist many routing proposals which should introduce the QoS into the network but practically they don't. Following paper presents the realization of simulation model for evaluation of a new routing algorithm DUMBRA...
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Road safety analysis in Poland using time-series modelling techniques
PublikacjaA number of international studies argue that there is a correlation between the number of traffic fatalities and the degree of public activity. The studies use the unemployment rate to support that argument. As unemployment grows miles travelled fall, a factor known to affect road safety. This relationship seems to be true for Poland, as well. The model presented in the paper is intended to prove it. It is a structural time-series local...
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Selfish Attacks in Two-Hop IEEE 802.11 Relay Networks: Impact and Countermeasures
PublikacjaIn IEEE 802.11 networks, selfish stations can pursue a better quality of service through selfish MAC-layer attacks. Such attacks are easy to perform, secure routing protocols do not prevent them, and their detection may be complex. Two-hop relay topologies allow a new angle of attack: a selfish relay can tamper with either source traffic, transit traffic, or both. We consider the applicability of selfish attacks and their variants...
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Does the Use of Cell Phones and Headphones at the Signalised Pedestrian Crossings Increase the Risk of Accident?
PublikacjaReduction of the number of fatalities among pedestrians remains a topical issue in Poland. For many years, this percentage has remained at around 30% of all those who were killed on the road. At the same time, there is an increase in the use of electronic devices by pedestrians and cyclists that may affect their perception when crossing the road. This can lead to traffic accidents. In order to investigate the problem, field studies...
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Assessing unsignalised pedestrian crossings
PublikacjaThe lack of pedestrian safety on crossings is a complex problem and one that is influenced by a number of factors such as the law, road traffic culture, the road and traffic. This paper will focus on the last two by presenting a method for assessing pedestrian crossings for their geometry and roadside using data from 930 pedestrian crossings in Warsaw. The authors of this paper have attempted to systematise the process of assessment...
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Polish expressways 2016 - video data
Dane BadawczePolish expressways 2016 - video data
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Kowalewo Pomorskie 2021 - video data - pedestrian, bicycles, vehicles
Dane BadawczeKowalewo Pomorskie 2021 - video data - pedestrian, bicycles, vehicles
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Research on Quality Requirements of Data Transmission Services in RSMAD
PublikacjaThe paper presents a results and analysis of research of the quality of service requirements (defined by the QoS attributes) for imaging data transmission services using Radio System for Monitoring and Acquisition of Data from Traffic Enforcement Cameras (in short RSMAD). The paper also presents and discusses results of test on the impact of the size of photos from traffic enforcement cameras on the average transmission time. These...
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Multipath routing for quality of service differentiation and network capacity optimization in broadband low-earth orbit systems
PublikacjaThis paper shows the importance of employing multiple different paths for routing in Inter-Satellite Link (ISL) networks in broadband Low-Earth Orbit (LEO) satellite systems. A theoretical analysis is presented and a routing concept is proposed to demonstrate three facts that make multipath routing especially important in broadband LEO networks: (1) differences in the propagation delays have a much greater impact on end-to-end...
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Potential for ITS/ICT Solutions in Urban Freight Management
PublikacjaThe article presents a study on applying ITS solutions in planning and management of urban freight transport in Gdynia. The traffic management system Tristar which is under implementation and its related systems show a potential to assist in development of freight transport measures. Recommendations for urban freight policy development supplementing Gdynia's Sustainable Urban Mobility Plan were used as a basis for identification...
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Ruchotwórczość wielkopowierzchniowych obiektów handlowych trzeciej generacji na przykładzie Trójmiasta
PublikacjaWielkopowierzchniowe obiekty (handlowe, usługowe itp.) generują ruch o dużych natężeniach, które często przekraczają możliwości przepustowe przyległego układu ulicznego. Wpływają w ten sposób na znaczne pogorszenie się warunków ruchu w najbliższym otoczeniu obiektu i zakłócenia w prawidłowym funkcjonowaniu systemu transportowego miasta. Wobec braku polskich doświadczeń konieczne jest badanie wpływu wybranych czynników demograficznych,...
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Fluid Mechanics and Hydraulics EE Msc sem. I r.a. 22/23
Kursy OnlineBasic definitions. Physical properties of liquids. Forces acting on fluids. Hydrostatics - basic equations. Pressure on a flat and curved wall. Buoyancy. Archimedes' law. Balance of submerged bodies. The balance of floating bodies. Hydrodynamics. Hydrodynamic quantities. Continuity equation for the liquid stream. Bernoulli equation. Basic laws of hydrodynamics. Equation of mass behavior, preservation of the amount of motion, Bernoulli's...
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Fluid Mechanics and Hydraulics EE Msc sem. I r.a. 23/24
Kursy OnlineBasic definitions. Physical properties of liquids. Forces acting on fluids. Hydrostatics - basic equations. Pressure on a flat and curved wall. Buoyancy. Archimedes' law. Balance of submerged bodies. The balance of floating bodies. Hydrodynamics. Hydrodynamic quantities. Continuity equation for the liquid stream. Bernoulli equation. Basic laws of hydrodynamics. Equation of mass behavior, preservation of the amount of motion, Bernoulli's...
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Miedzyborz 2021 - video data I - pedestrian, bicycles, vehicles
Dane BadawczeMiedzyborz 2021 - video data - pedestrian, bicycles, vehicles
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Krotoszyn 2021 - video data I - pedestrian, bicycles, vehicles
Dane BadawczeKrotoszyn 2021 - video data - pedestrian, bicycles, vehicles
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Gostyn 2021 - video data I - pedestrian, bicycles, vehicles
Dane BadawczeGostyn 2021 - video data - pedestrian, bicycles, vehicles
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Selected Problems of Transport in Port Towns – Tri-City as an Example
PublikacjaPort towns are strategic places from the point of view of transport systems. They form integration junctions for various transport branches , apart from the traditional - road and railway ones , also for water( sea) transport which is active there. Moreover, air transport comes also into consideration , whose efficient functioning must be connected with good accessibility, that concerns sea transport as well. Efficient and...
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Searching for road deformations using mobile laser scanning
PublikacjaMillions of people use roads every day all over the world. Roads, like many other structures, have an estimated durability. In Poland a lot of the roads were built at the turn of the 20th and 21st c., especially for light cars. Many of these roads carry traffic and heavy goods vehicles which were not predicted when the traffic was first estimated. It creates a lot of problems with technical conditions and the infrastructure must...
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Study on the accuracy of axle load spectra used for pavement design
PublikacjaWeigh-in-Motion (WIM) systems are used in order to reduce the number of overloaded vehicles. Data collected from WIM provide characteristics of vehicle axle loads that are crucial for pavement design as well as for the development of pavement distress prediction models. The inaccuracy of WIM data lead to erroneous estimation of traffic loads and in consequence inaccurate prediction of pavement distress process. The objective of...
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Performance Evaluation of a Multidomain IMS/NGN Network Including Service and Transport Stratum
PublikacjaThe Next Generation Network (NGN) architecture was proposed for delivering various multimedia services with guaranteed quality. For this reason, the elements of the IP Multimedia Subsystem (IMS) concept (an important part of 4G/5G/6G mobile networks) are used in its service stratum. This paper presents comprehensive research on how the parameters of an IMS/NGN network and traffic sources influence mean Call Set-up Delay (E(CSD))...
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Akustyczna analiza parametrów ruchu drogowego z wykorzystaniem informacji o hałasie oraz uczenia maszynowego
PublikacjaCelem rozprawy było opracowanie akustycznej metody analizy parametrów ruchu drogowego. Zasada działania akustycznej analizy ruchu drogowego zapewnia pasywną metodę monitorowania natężenia ruchu. W pracy przedstawiono wybrane metody uczenia maszynowego w kontekście analizy dźwięku (ang.Machine Hearing). Przedstawiono metodologię klasyfikacji zdarzeń w ruchu drogowym z wykorzystaniem uczenia maszynowego. Przybliżono podstawowe...
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Polish voivodeship roads 2016 - video data
Dane BadawczePolish voivodeship roads 2016 - video data
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Multimedia industrial and medical applications supported by machine learning
PublikacjaThis article outlines a keynote paper presented at the Intelligent DecisionTechnologies conference providing a part of the KES Multi-theme Conference “Smart Digital Futures” organized in Rome on June 14–16, 2023. It briefly discusses projects related to traffic control using developed intelligent traffic signs and diagnosing the health of wind turbine mechanisms and multimodal biometric authentication for banking branches to provide...
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Polish national roads 2016 - video data
Dane BadawczeThe data includes video traffic data registered with video camera installed inside the car. The purpose of the research was to gather vehicle traffic recordings in real conditions on polish national roads.
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Urban Railway within the Linear Urban Structure: the Case Study of Perm, Russia
PublikacjaThe paper analyses the ten years’ experience of Perm to develop its system of the urban train trying to reveal the reasons for its modest performance and decline in the passenger traffic. The authors show how the Urban Train fits within the city urban structure and eval uate the potential of the Urban Train to become a feasible solution to the problem of connecting the periphery with the city centre. Furthermore,...
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Assessing Highway Travel Time Reliability using Probe Vehicle Data
PublikacjaProbe vehicle data (also known as “floating car data”) can be used to analyze travel time reliability of an existing road corridor in order to determine where, when, and how often traffic congestion occurs at particular road segments. The aim of the study is to find the best reliability performance measures for assessing congestion frequency and severity based on probe data. Pilot surveys conducted on A2 motorway in Poland confirm...
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Mobile indicators in GIS and GPS positioning accuracy in cities
PublikacjaThe publication describes the possible use of tele-geoprocessing as a synergy of modern IT solutions, telecommunications and GIS algorithms. The paper presents a possibility of urban traffic monitoring with the use of mobile GIS indicators of dedicated monitoring system designed for taxi corporation. The system is based on a stationary and mobile software package. The optimal and minimal assumptions for the monitoring of urban...
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Study of QoS Parameters Measurement Methodology and Requirements in RSMAD
PublikacjaThe paper presents the results of analysis and research of the quality of service requirements (defined by the QoS parameters) for data transmission services in Radio System for Monitoring and Acquisition of Data from Traffic Enforcement Cameras (in short: RSMAD). The paper also presents and discusses the results of test of impact of the size of images from traffic enforcement cameras (TECs) on the average transmission time. Moreover,...
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Theory and implementation of a virtualisation level Future Internet defence in depth architecture
PublikacjaAn EU Future Internet Engineering project currently underway in Poland defines three parallel internets (PIs). The emerging IIP system (IIPS, abbreviating the project’s Polish name), has a four-level architecture, with level 2 responsible for creation of virtual resources of the PIs. This paper proposes a three-tier security architecture to address level 2 threats of unauthorised traffic injection and IIPS traffic manipulation...