Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "dynamic traffic" wg kryterium: Temat

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 16
Tytuł:
Spatial Distribution of Flows in Transportation Networks. A Model Based on Bounded Rationality Assumption
Autorzy:
Dorosiewicz, Sławomir
Powiązania:
https://bibliotekanauki.pl/articles/504417.pdf
Data publikacji:
2012
Wydawca:
Międzynarodowa Wyższa Szkoła Logistyki i Transportu
Tematy:
transportation networks
dynamic traffic assignment problem model of traffic flows
Opis:
This paper refers to a Dynamic Traffic Assignment Problem. A consecutive dynamic model of traffic flows is formulated. Some of its dynamical properties (including existence of chaotic solutions and bifurcations) are examined in two special cases.
Źródło:
Logistics and Transport; 2012, 14, 1; 73-80
1734-2015
Pojawia się w:
Logistics and Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamic traffic management on motorways during reconstruction works
Autorzy:
Scerba, M.
Apeltauer, J.
Vsetecka, M.
Apeltauer, T.
Powiązania:
https://bibliotekanauki.pl/articles/393876.pdf
Data publikacji:
2013
Wydawca:
Polskie Stowarzyszenie Telematyki Transportu
Tematy:
dynamic traffic management
motorway
reconstruction
dynamiczne zarządzanie ruchem
autostrada
rekonstrukcja
Opis:
The presented paper describes the latest results of a research project focused on the development and application of intelligent system for dynamic traffic management on highway in work zones. The presented system is a result of a research project funded by the Technology Agency of the Czech Republic and will be deployed in a pilot verification during the started reconstruction of D1 highway in the Czech Republic in the upcoming months. The system should help to increase the throughput of the reconstructed highway work zones and reduce the negative effects of the reconstruction work itself.
Źródło:
Archives of Transport System Telematics; 2013, 6, 3; 34-37
1899-8208
Pojawia się w:
Archives of Transport System Telematics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
How does the value of time influence road user costs during work zone closures? A case study in El Paso, Texas, using simulation - based modeling methods
Autorzy:
Shelton, Jeffrey
Martin, Peter M.
Powiązania:
https://bibliotekanauki.pl/articles/2141120.pdf
Data publikacji:
2021
Wydawca:
Fundacja Centrum Badań Socjologicznych
Tematy:
value of time
work zone
road user cost
dynamic traffic assignment
advanced traveler information
Opis:
It is becoming standard practice for many departments of transportation (DOTs) to use incentive/disincentive clauses (also known as road user costs) with contractors to stay on or ahead of schedule. These road user costs are clauses that DOTs use to calculate a monetary amount to encourage contractors to complete work prior to milestone dates and/or limit the time specified on the contract. The monetary amounts are typically vehicle operating costs and vehicle delay costs encumbered by highway users resulting from construction, maintenance, or rehabilitation activity. In this paper, we propose an innovative way of calculating these costs using varied values of time based on trip purpose and departure time. In addition, we use advanced pre-trip and en route traveler information to determine the influence it has on route choice. Several scenarios are modeled using an advanced, simulation-based dynamic traffic assignment model. The goal of this paper is to identify the governing factors that contribute to road use costs by determining different approaches to derive the value one places on a trip. The approach to this study is twofold: first several research methods were used to derive the value of time. Second, the use of advanced traveler information is introduced to determine if it plays a critical role in route choice. The proposed methodology shows differences in road user cost calculations. Which approach would be more receptive to a contractor while proposing roadway construction? A case study of a roadway construction project in El Paso, Texas, is used to compare different approaches to calculate road user costs.
Źródło:
Journal of Sustainable Development of Transport and Logistics; 2021, 6, 1; 18-31
2520-2979
Pojawia się w:
Journal of Sustainable Development of Transport and Logistics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Indirect observation of rerouting phenomena in traffic networks – case study of Warsaw bridges
Autorzy:
Kucharski, R.
Gentile, G.
Powiązania:
https://bibliotekanauki.pl/articles/224147.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
traffic events
dynamic traffic
transportation network
rerouting phenomena
traffic management
real-time traffic
zdarzenia drogowe
ruch dynamiczny
sieć transportowa
przekierowania
zarządzanie ruchem
Opis:
In this paper we propose estimation procedure in which traffic flows resulting from rerouting model are matched with traffic flows observed during unexpected events. We show practical value of observing a entire cut-set of the transportation network and propose theoretical closed-form formulation of estimation problem for the rerouting model. We apply proposed framework on field-data from Warsaw bridges to observe rerouting phenomena. Most importantly we observed that: a) around 20% of affected traffic flow reroutes, b) rerouting flows are increasing in time, c) drivers show strategic capabilities, d) and maximize their utility while rerouting. All of the which were hypothesized in Information Comply Model (Kucharski et. al., 2014) and are now supported with field observations.
Źródło:
Archives of Transport; 2014, 32, 4; 29-41
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Direct observation of rerouting phenomena in traffic networks
Autorzy:
Kucharski, R.
Gentile, G.
Powiązania:
https://bibliotekanauki.pl/articles/223498.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
dynamic traffic assignment
rerouting phenomena
route choice models
information comply model
dynamiczna alokacja ruchu
przekierowania
modele wyboru drogi
wybór trasy
Opis:
In this paper we propose how available dataset can be used to estimate rerouting phenomena in traffic networks. We show how to look at set of paths observed during unexpected events to understand the rerouting phenomena. We use the information comply model [1] and propose its estimation method. We propose the likelihood formula and show how the theoretical and observed rerouting probabilities can be obtained. We conclude with illustrative example showing how a single observed path can be processes and what information it provides. Contrary to parallel paper [2] where rerouting phenomena is estimated using real traffic flow measures from Warsaw, here we use only synthetic data. The paper is organized as follows. First we elaborate on rerouting phenomena and define the traffic network, then we summarize the literature behind rerouting phenomena. We follow with a synthetic definition of dynamic traffic assignment needed to introduce ICM model in subsequent section. Based on that introduction we define the observations and propose estimation method based on them followed by illustrative example. Paper is summarized with conclusions and pointing of future directions.
Źródło:
Archives of Transport; 2014, 30, 2; 57-66
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Transportation System Architecture for Intelligent Management
Autorzy:
Szpytko, J.
Powiązania:
https://bibliotekanauki.pl/articles/117495.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Intelligent Management
Transportation System Architecture
Sea Transportation
Intelligent Transport Services (ITS)
Dynamic Traffic Management (DTM)
Knowledge Management System (KMS)
Transport Execution System (TES)
Transport Management System (TMS)
Opis:
The paper is focusing on transportation system architecture for intelligent management, especially in sea transport and transportation technology. Moreover control models of large-scale distributed enterprises systems and transport active knowledge base management model have been presented.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 2; 189-194
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new multiple objective dynamic routing method using implied costs
Autorzy:
Craveirinha, J.
Martins, L.
Antunes, C.H.
Climaco, J.N.
Powiązania:
https://bibliotekanauki.pl/articles/307698.pdf
Data publikacji:
2003
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
dynamic routing
multicriteria decision support systems
traffic management
Opis:
There are advantages in considering the routing problem in integrated communication networks as a multiobjective shortest path problem, having in mind to grasp eventual conflicts and trade-offs among distinct objectives and quality of services (QoS) constraints. On the other hand the utilisation of dynamic routing methods in various types of networks is well known to have significant impact on network performance and cost, namely in overload and failure conditions. This paper presents the detailed formulation of a proposal of a multiple objective dynamic routing method (MODR) of periodic state dependent routing type, enabling to represent distinct QoS related metrics and requirements in a consistent manner. The MODR method present formulation is based on a multiple objective shortest path model with constraints and is prepared to use implied costs as one of the metrics. Alternative paths tor each traffic flow are changed as a function of periodic updates of certain QoS related parameters estimated from real time measurements on the routes and trunks of the network. Such paths are computed by a specialised and efficient variant of a bi-objective shortest path constrained algorithm, developed for the MODR, enabling to incorporate flexible requirements on the QoS metrics. The architecture of the routing system is discussed together with the features of its main modules. An illustrative example of application of the MODR path calculation module to a circuit-switched type network using blocking probability and implied cost as metrics, is also presented, considering different overload conditions.
Źródło:
Journal of Telecommunications and Information Technology; 2003, 3; 50-59
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamic RSA Problem for Time-Varying Traffic in Spectrum Sliced Elastic Optical Path Network
Autorzy:
Olszewski, I.
Powiązania:
https://bibliotekanauki.pl/articles/226545.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
time-varying traffic
dynamic RSA problem
optical path
OFDM modulation
Opis:
Service time-varying traffic flexible optical networks require a dynamic bandwidth allocation in order to follow the source transmission rate. The problem of service time-varying traffic, assuming that the set of connection requests is not known in advance, is considered in this work. Connection requests arrive randomly and have random durations. The considered dynamic RSA problem involves minimizing the probability of future connections blocking while maintaining spectrum continuity constraints and non-overlapping spectrum assignment constraints between spectrum-adjacent connections on the network links. The proposed algorithm determines the path with the required number of slots around the reference frequency for a connection request. An analysis of the network with time-varying traffic on the network connections was carried out on the basis of spectrum expansion/contraction schemes which allow to determine average blocking probability of the additional slot requests on these connections. The obtained results have been compared with those obtained by a well known algorithm that solves the dynamic RSA problem.
Źródło:
International Journal of Electronics and Telecommunications; 2015, 61, 2; 179-184
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of a dynamic map architecture with ATAM
Ocena architektury mapy dynamicznej z użyciem metody ATAM
Autorzy:
Szwed, P.
Wojnicki, I.
Ernst, S.
Głowacz, A.
Powiązania:
https://bibliotekanauki.pl/articles/282150.pdf
Data publikacji:
2013
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
architecture evaluation
ATAM
traffic monitoring
dynamic map
ocena architektury
monitorowanie ruchu
mapa dynamiczna
Opis:
Dynamic Map can be considered a complex information system, composed of spatial databases, storing static and dynamic data relevant for urban traffic, as well as a set of software modules responsible for data collection, interpretation and provision. The data originates from a network of sensors, both fixed (e.g. video detectors, acoustic sensors, inductive loops) and on-board GPS receivers installed in vehicles. Clients of the Dynamic Map are various software modules performing such tasks as visualization, route planning, traffic optimization, object tracking and threat detection. The paper discusses experiences with an evaluation of the system architecture using the ATAM (Architectural Tradeoffs Analysis Method). The stages of evaluation eomprise describing architectural views, identification of key scenarios and evaluation of risks of their realization.
Mapa dynamiczna jest złożonym systemem informatycznym składającym się z przestrzennych baz danych przechowujących statyczne i dynamiczne informacje dotyczące ruchu drogowego oraz modułów oprogramowania odpowiedzialnych za zbieranie danych, ich interpretację oraz udostępnianie. Dane monitorowania pochodzą z sieci czujników, zarówno stałych, w tym detektory wideo, czujniki akustyczne i pętle indukcyjne, jak i odbiorników GPS zainstalowanych w pojazdach. Klientami mapy dynamicznej są systemy odpowiedzialne za wizualizację, planowanie trasy, śledzenie obiektów oraz wykrywanie zagrożeń. W artykule omówiono doświadczenia zebrane podczas przeprowadzonej oceny architektury z wykorzystaniem metody ATAM. Etapy oceny obejmują opis architektury, identyfikację kluczowych scenariuszy oraz ocenę ryzyka ich realizacji.
Źródło:
Automatyka / Automatics; 2013, 17, 1; 127-139
1429-3447
2353-0952
Pojawia się w:
Automatyka / Automatics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New Developments in a Two-criteria Approach to Dynamic Power Management in Energy-aware Computer Networks
Autorzy:
Karbowski, A.
Jaskóła, P.
Powiązania:
https://bibliotekanauki.pl/articles/309427.pdf
Data publikacji:
2016
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
data-intensive computing
energy-aware network
energy-aware routing
dynamic power management
MIQP problems
traffic engineering
Opis:
In the paper authors continue the development of a model of dynamic power management in energy-aware computer networks, where two criteria: energy consumption and the quality of service are considered. This approach is appropriate when the routing problem with fixed demands is inadmissible. The formulation introducing edge indices is modified and tests on problems of different sizes are performed.
Źródło:
Journal of Telecommunications and Information Technology; 2016, 2; 21-25
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the conditions for the exhaustion of the stability margin in the rail track of freight cars with three-piece bogies
Autorzy:
Domin, Yurii V.
Domin, Rostysla Yu.
Cherniak, Ganna Yu.
Nozhenko, Volodymyr S.
Powiązania:
https://bibliotekanauki.pl/articles/1833607.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
freight cars
derailment
traffic safety
dynamic performance
computer simulation
wagony towarowe
wykolejenie
bezpieczeństwo na drodze
wydajność dynamiczna
symulacja komputerowa
Opis:
The research on improvement of methodical approaches to definition of the probable reasons of infringement of conditions of stability of freight cars from derailment is carried out. Using a basic computer model of the dynamics of a freight car, the influence of the characteristics of the technical condition of their running gear and track on the indicators of empty cars stability from derailment was studied through the computational experiment. The article presents the main statements of the research methodology, which provides the analysis of probable causes of derailment of freight cars by conducting a series of numerical experiments with logging the progress of calculations and saving the results. Factor analysis was used to interpret the calculated data with an assessment of each of the factors influence or their combination on the probability of derailment. The developed procedure of the simulation experiment provides a step-by-step study of the freight cars derailment conditions, including factors structuring and ranking, development of experimental plan, calculating coefficients of wheel pairs resistance to derailment from rails, provided that the wheel flange rolls onto the rail head, and determining the degree of influence of relevant factors on the dynamic stability of cars from derailment. A comparative analysis of the stability of cars in rail tracks was performed using the introduced concept of the combined coefficient of stability of wheel pairs against derailment. Determining the probable causes of car derailment is based on scanning the parameter field. The results of the parametric study revealed the degree of influence on the freight cars stability of running gear technical condition characteristics. In particular, it is determined that the most dangerous in terms of stability loss of empty cars in the track is the exceeding of the wedges of the vibration dampers.
Źródło:
Archives of Transport; 2021, 57, 1; 119-129
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design and development of a road traffic redirection system
Autorzy:
Bazan, M.
Janiczek, T.
Halawa, K.
Dudek, R.
Rudawski, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/393375.pdf
Data publikacji:
2017
Wydawca:
Polskie Stowarzyszenie Telematyki Transportu
Tematy:
traffic redirection
Dijkstra algorithm
shortest paths
dynamic rerouting
guidance systems
przekierowanie ruchu
algorytm Dijkstry
najkrótsza ścieżka
dynamiczna zmiana trasy
systemy kierowania
Opis:
Nowadays, the crucial issue of guidance systems based on a GPS signal is that they are not able to redirect road users, taking into account the current state of traffic (and the predicted state within the time of the travel) in the city. In this paper we present a three layer architecture of a computer system capable of redirecting users of an urban road system via routes with a lighter traffic load in order to reach their declared destination in the city. A basic layer is a multiprocessor calculation server running Dijkstra path search tasks, the middle layer - the one which is visible to the road user - is a replicable proxy server that collects route requests from road users. The third layer is a mobile application. The prototype of such a system was developed by the ArsNumerica Group. The crucial feature of the system is feedback from road users that allows us to adjust the whole Intelligent Transportation System in the city to changes in traffic flow at various road links introduced by the redirection process applied to many users. The performance test strategy to prove the efficiency of the architecture was carried out for the city of Wrocław.
Źródło:
Archives of Transport System Telematics; 2017, 10, 1; 3-8
1899-8208
Pojawia się w:
Archives of Transport System Telematics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Working principle and performance evolution of camera-based intelligent signalized intersections: Samsun city, Türkiye example
Autorzy:
Aydin, Metin Mutlu
Potoglou, Dimitris
Cipcigan, Liana
Powiązania:
https://bibliotekanauki.pl/articles/27312355.pdf
Data publikacji:
2023
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
intelligent intersections
traffic chaos
control delay
dynamic signal timing
urban road
inteligentne skrzyżowania
chaos drogowy
opóźnienie sterowania
dynamiczny pomiar czasu sygnału
droga miejska
Opis:
In the current literature, it is clearly seen that most of the traffic chaos is generally observed at intersections of the urban roads in cities. On the other hand, many current traffic studies and research prove that fixed-time signalized intersections cannot have a good ability to control and manage current traffic flow at signalized intersection legs. For this aim, intelligent intersections were developed and started to be used in many cities all over the world in the last decade. These new intelligent intersection systems suggest dynamic signal times for all intersection legs by using real-time measured traffic data. These systems generally use cameras or loop detectors, which are located in the proper places on a signalized intersection leg and record vehicle movements. Within the scope of this study, a performance comparison was made for before and after the camera-based intelligent intersection applications at three isolated pilot signalized intersections within the scope of the "Smart City Traffic Safety" project, which is one of the largest Intelligent Transportation System projects in Turkey. After the system was activated, it was observed that the drivers had impatient behaviors in the beginning and had difficulty getting used to these new systems. After the signal cycle was regulated with the learning of artificial intelligence, it was seen that the drivers had more patience and more observant behaviors. It was also obtained from the analysis results that these new intelligent systems resulted in an average 16% decrease in control delays and a 20% decrease in vehicle speeds.
Źródło:
Zeszyty Naukowe. Transport / Politechnika Śląska; 2023, 121; 5--17
0209-3324
2450-1549
Pojawia się w:
Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamic location models of mobile sensors for travel time estimation on a freeway
Autorzy:
Sun, Weiwei
Shen, Liang
Shao, Hu
Liu, Pengjie
Powiązania:
https://bibliotekanauki.pl/articles/1838205.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
traffic mobile sensor
dynamic location model
travel time estimation
simulated annealing algorithm
data fusion
czujnik ruchu
model lokalizacji
szacowanie czasu podrózy
fuzja danych
Opis:
Travel time estimation for freeways has attracted much attention from researchers and traffic management departments. Because of various uncertain factors, travel time on a freeway is stochastic. To obtain travel time estimates for a freeway accurately, this paper proposes two traffic sensor location models that consider minimizing the error of travel time estimation and maximizing the collected traffic flow. First, a dynamic optimal location model of the mobile sensor is proposed under the assumption that there are no traffic sensors on a freeway. Next, a dynamic optimal combinatorial model of adding mobile sensors taking account of fixed sensors on a freeway is presented. It should be pointed out that the technology of data fusion will be adopted to tackle the collected data from multiple sensors in the second optimization model. Then, a simulated annealing algorithm is established to find the solutions of the proposed two optimization models. Numerical examples demonstrate that dynamic optimization of mobile sensor locations for the estimation of travel times on a freeway is more accurate than the conventional location model.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2021, 31, 2; 271--287
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using information collected by weigh in motion for modeling traffic structure of vehicles
Autorzy:
Smolarek, L.
Ziemska, M.
Powiązania:
https://bibliotekanauki.pl/articles/393215.pdf
Data publikacji:
2017
Wydawca:
Polskie Stowarzyszenie Telematyki Transportu
Tematy:
intelligent transportation system
weight-in-motion
transport modeling
dynamic model
traffic structure
inteligentny system transportowy
ważenie pojazdów w ruchu
modelowanie transportu
model dynamiczny
struktura ruchu
Opis:
The article presents an example of a dynamic traffic flow modeling using as a data source information the measurement system weight Preselection Implemented in Gdynia. The measuring point is located on the road leading to the Gdynia container terminals and to Gdynia Kwiatkowski, which is Directly connected with the TriCity Bypass. One of the goals of the system is collect data which can be used for operational purposes and statistics. Measurement period allowed the appointment of a mathematical model which describes the dynamic variation of the structure of the stream. In Addition, an analysis of the variability of the traffic flow in both the daily and weekly basis is presented. This give possibility to determine the effect of time of day and day of the week on the parameters of a dynamic model describing the structure of a generic stream. The resulting model allows the study of the impact of the share of heavy vehicles on ride comfort of passenger cars.
Źródło:
Archives of Transport System Telematics; 2017, 10, 4; 32-37
1899-8208
Pojawia się w:
Archives of Transport System Telematics
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 16

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies