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Wyszukujesz frazę "travel time" wg kryterium: Temat


Tytuł:
The analysis and proposal of new traffic organisation at the roundabout in the city of Banska Bystrica
Autorzy:
Paluch, J.
Kubikova, S.
Palo, J.
Sliacan, T.
Powiązania:
https://bibliotekanauki.pl/articles/393860.pdf
Data publikacji:
2018
Wydawca:
Polskie Stowarzyszenie Telematyki Transportu
Tematy:
traffic survey
traffic modelling
travel time
delay time
roundabout
Opis:
Building new roundabouts in the city centers become more and more common. Our paper is focused on evaluation of current state of traffic organization at the chosen roundabout based on the transport survey. The chosen roundabout is located on streets Tajovského, Švernova and Nad plážou in the city of Banská Bystrica, near the department store Lidl. Th e roundabout is a connection point between Podlavice neighborhood, Skubín neighborhood, Fončorda neighborhood on south and the city center. For a correct analysis of the traffic situation, a comprehensive assessment of the roundabout and its link to the surrounding traffic junctions is necessary. Once this analysis has been made, it is possible to create a transport model and then make various simulations. We are able to assess in appropriate way a current traffic situation at the roundabout and test a new proposal of roundabout solution, using simulation soft ware.
Źródło:
Archives of Transport System Telematics; 2018, 11, 2; 44-47
1899-8208
Pojawia się w:
Archives of Transport System Telematics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of factors affecting the intrinsic vulnerability of groundwater rated by the mean residence time estimation method
Autorzy:
Duda, Robert
Kowalczyk, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/2058610.pdf
Data publikacji:
2019
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
groundwater vulnerability
intrinsic vulnerability
residence time
travel time
MRT
GIS
Opis:
We analyse the factors used for assessing groundwater intrinsic vulnerability to pollution in the mean residence time estimation method, providing a final vulnerability evaluation. The following factors were analysed: depth to shallow groundwater, effective precipitation infiltration coefficient, terrain inclination, volumetric water content of soils and rocks in the unsaturated zone and volumetric water content of the topsoil. GIS surveys were performed for two geomorphologically diverse regions: a highland piedmont and a lowland plain in Poland (Central Europe). In both cases, groundwater had spatially diverse vulnerability to contamination. The research method used relied on determining the percentage participation of the area with particular values of the parameters analysed in areas of different degrees of vulnerability. Knowledge of the extent and distribution of variability of the parameters analysed in areas of particular degrees of vulnerability helps explain the causes of spatial variation in groundwater intrinsic vulnerability to contamination in given areas.
Źródło:
Geological Quarterly; 2019, 63, 1; 126--138
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Travel Time Forecasting Based on Fuzzy Patterns
Autorzy:
Kiersztyn, Adam
Gandzel, Agnieszka Gandzel
Koczan, Leopold
Celiński, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/2023310.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
fuzzy clustering
travel time forecasting
fuzzy patterns
transportation data
Opis:
Estimating travel time is one of the most important processes in logistics as well as in everyday life. In particular, when it comes to transportation services, efficient time management can be a competitive advantage, not to mention customer satisfaction, which can be easily translated into business success. Therefore, in this study we analyze various travel time estimation methods in combination with a well-known Fuzzy C-Means clustering algorithm. The proposed FCM-based solution has significant advantages, allowing for the determination of the optimal travel time. In an extensive numerical experiment, we present the application of the proposed method to estimate the time of a taxi trip around New York. Due to division of the city area into detailed areas and taking into account information about the travel time in the analysis, a model was obtained, that perfectly forecasts speed of taxi travel. In this study we consider various, competitive approaches to build such a model.
Źródło:
Advances in Science and Technology. Research Journal; 2021, 15, 3; 224-232
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of railway commuting factors and customers patronage in Lagos State, Nigeria
Autorzy:
Adanikin, Ariyo
Adeoye, Itunuoluwa
Ajayi, Joseph
Powiązania:
https://bibliotekanauki.pl/articles/2141227.pdf
Data publikacji:
2022
Wydawca:
Fundacja Centrum Badań Socjologicznych
Tematy:
customer patronage
railway transportation
service quality
safety
travel time
Opis:
Railway transportation is a critical component of countries' transportation sectors worldwide. This is because, in the movement of goods and persons, railway transport networks have a clear advantage over other modes of transportation. However, despite the positive outlook, Nigeria's railway transportation networks have faced several challenges to the country's economic and social development, especially in overpopulated cities like Lagos State. The study population consists of 125 railway transportation users in Lagos state. The data were analyzed using descriptive, multiple and Partial Least Square Structural Equation Modeling (PLS-SEM). The study revealed that safety is the highest predictor of customer patronage amongst railway commuters in Lagos state. This is followed by price, travel time and service quality. This indicates that if the safety of the railway commuters (customers) is guaranteed, they will continue to use the train regardless of the service quality being offered to them. The study recommended that Public-Private Partnership (PPP) should be encouraged in running the affairs of the Nigerian railways for increased efficiency and that industry players need to be proactive by ensuring adequate professionalism in the sector and putting in place modern railway transport facilities.
Źródło:
Journal of Sustainable Development of Transport and Logistics; 2022, 7, 1; 90-98
2520-2979
Pojawia się w:
Journal of Sustainable Development of Transport and Logistics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using hexagonal grids and network analysis for spatial accessibility assessment in urban environments - a case study of public amenities in Toruń
Autorzy:
Burdziej, Jan
Powiązania:
https://bibliotekanauki.pl/articles/2135537.pdf
Data publikacji:
2019-05-04
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
Hexagonal grid
spatial accessibility
urban accessibility
network analysis
travel time
Opis:
Spatial accessibility is one of fundamental problems of geography, and transport geography in particular. It is one of the key factors afecting the ability to use certain services by the residents of a given area. Therefore, it is important to develop appropriate methods for the analysis of spatial accessibility. This paper describes a methodology for analyzing spatial accessibility in urban areas using a hexagonal grid combined with a network analysis. The proposed methodology is applied to the city of Toruń, Poland. Spatial distribution of accessibility to selected public amenities is analyzed and areas of high and low accessibility are identified. Finally, a prototype of a novel web-based system is proposed to allow citizens and city oficials to perform custom analysis based on individual preferences.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2019, 23, 2; 99-110
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Community Traffic: a technology for the next generation car navigation
Autorzy:
Dembczyński, K.
Gaweł, P.
Jaszkiewicz, A.
Kotłowski, W.
Kubiak, M.
Susmaga, R.
Wesołek, P.
Wojciechowski, A.
Zielniewicz, P.
Powiązania:
https://bibliotekanauki.pl/articles/205706.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
community traffic
satellite car navigation
reliability analysis
travel time prediction
Opis:
The paper presents the NaviExpert’s Community Traffic technology, an interactive, community–based car navigation system. Using data collected from its users, Community Traffic offers services unattainable to earlier systems. On the one hand, the current traffic data are used to recommend the best routes in the navigation phase, during which many potentially unpredictable traffic-delaying and traffic-jamming events, like unexpected roadworks, road accidents, or diversions, can be taken into account and thereby successfully avoided. On the other hand, a number of istinctive features, like immediate location of various traffic dangers, are offered. Using exclusively real-life data, provided by NaviExpert, the paper presents two illustrative case studies concerned with experimental evaluation of solutions to computational problems related to the community-based services offered by the system.
Źródło:
Control and Cybernetics; 2012, 41, 4; 867-883
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of spatiotemporal data to predict traffic conditions aiming at a smart navigation system for sustainable urban mobility
Autorzy:
Kyriakou, Kalliopi
Lakakis, Konstantinos
Savvaidis, Paraskevas
Basbas, Socrates
Powiązania:
https://bibliotekanauki.pl/articles/223718.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
spatio-temporal data
travel time prediction
smart navigation
urban mobility
Opis:
Urban traffic congestion created by unsustainable transport systems and considered as a crucial problem for the urbanised areas provoking air pollution, heavy economic losses due to the time and fuel wasted and social inequity. The mitigation of this problem can improve efficiency, connectivity, accessibility, safety and quality of life, which are crucial parameters of sustainable urban mobility. Encouraging sustainable urban mobility through smart solutions is essential to make the cities more liveable, sustainable and smarter. In this context, this research aims to use spatiotemporal data that taxi vehicles adequately provide, to develop an intelligent system able to predict traffic conditions and provide navigation based on these predictions. GPS (Global Positioning System) data from taxi are analysed for the case of Thessaloniki city. Trough data mining and map-matching process, the most appropriate data are selected for travel time calculations and predictions. Several algorithms are investigated to find the optimum for traffic states prediction for the specific case study concluding that ANN (Artificial Neural Networks) outperforms. Then, a new road network map is created by producing spatiotemporal models for every road segment under investigation through a linear regression implementation. Moreover, the possibility to predict vehicle emissions from travel times is investigated. Finally, an application with a graphical user interface is developed, that navigates the users with the criteria of the shortest path in terms of trip length, travel time shortest path and “eco” path. The outcome of this research is an essential tool for drivers to avoid congestion spots saving time and fuel, for stakeholders to reveal the problematic of the road network that needs amendments and for emergency vehicles to arrive at the emergency spot faster. Besides that, according to an indicator-based qualitative assessment of the proposed navigation system, it is concluded that it contributes significantly to environmental protection and economy enhancing sustainable urban mobility.
Źródło:
Archives of Transport; 2019, 52, 4; 27-46
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Transport accessibility changes in metropolitan regions: high-speed rail connection frequency estimation
Autorzy:
Vrána, Martin
Hlisnikovský, Petr
Pařil, Vilém
Surmařová, Simona
Ilík, Jan
Powiązania:
https://bibliotekanauki.pl/articles/54687418.pdf
Data publikacji:
2024
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
metropolitan region
intermediate city
accessibility
frequency
travel time
highspeed rail (HSR)
Opis:
This article focuses on a very narrowly specific segment of this issue, considering the impacts of HSR in the long term, not as transport arteries connecting the most important metropolitan areas but, on the contrary, as an internal factor of development within a metropolitan region. The paper aims to transfer the present operational European HSR commuting connection frequency experience to a generally applicable frequency estimation formula. Through a quantitative approach, the research analyses the total sample of 1,446 train connections from 10 European metropolitan regions. It answers the secondary research question of what the range of accessibility change between the metropolitan core and the intermediate city is after introducing HSR connection inside metropolitan regions in the time of 1 hour of journey. The estimation model formula calculates the optimal number of HSR connections between the metropolitan core and intermediate city in the HSR developing countries. It is derived and verified from the analysed dataset values. The potential operational change scenarios are presented and described based on the example of 34 metropolitan city pairs.
Źródło:
European Spatial Research and Policy; 2024, 31, 1; 53-78
1231-1952
1896-1525
Pojawia się w:
European Spatial Research and Policy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Real-time travel time prediction models in routing for car navigation applications
Autorzy:
Gaweł, P.
Dembczyński, K.
Kotłowski, W.
Jaszkiewicz, A.
Powiązania:
https://bibliotekanauki.pl/articles/393980.pdf
Data publikacji:
2013
Wydawca:
Polskie Stowarzyszenie Telematyki Transportu
Tematy:
FCD
travel time
prediction
navigation
routing
czas podróży
prognoza
nawigacja
trasowanie
Opis:
We consider the problem of using real-time floating car data to construct vehicle travel time prediction models meant to be used as input to routing algorithms for finding the fastest (time-shortest) path in the traffic network. More specifically we target the on-line car navigation systems. The travel time estimates for such a system need to be computed efficiently and provided for all short segments (links) of the roads network. We compare several fast real-time methods such as last observation, moving average and exponential smoothing, each combined with a historical traffic pattern model. Through a series of large-scale experiments on real-world data we show that the described approach yields promising results and conclude that specific prediction function form may be less important than a proper control of bias-variance trade-off (achieved by historical and real-time models combination). In addition, we consider two different settings for testing the prediction quality of the models. The first setting concerns measuring the prediction error on short road segments, while the second on longer paths through the traffic network. We show the quality and model parameters vary depending on the assessment method.
Źródło:
Archives of Transport System Telematics; 2013, 6, 4; 4-8
1899-8208
Pojawia się w:
Archives of Transport System Telematics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Defense of Presentist Time Travel
Autorzy:
Zhuang, Xuanpu
Powiązania:
https://bibliotekanauki.pl/articles/38430139.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Warszawski. Wydział Filozofii
Tematy:
presentism
time travel
causation
personal identity
Opis:
Presentism usually holds that only present entities exist. In contrast to presentism, eternalism holds that past, present, and future entities all exist. According to some philosophers, presentism is intuitively incompatible with time travel. In this paper, I defend the compatibility between presentism and time travel by arguing for a plausible account of causation in the presentist framework. To achieve my goal, I respond to an objection to presentist time travel that is based on the nonexistence of the past: the Causation Objection. According to the Causation Objection, causal relations between objects at different times are necessary for time travel, but these are impossible for presentists. I evaluate a possible reply based on a non-relational account of causation and show that this reply is not satisfying. Subsequently, I put forward a fact-based account of causal relation. I argue that presentists could accept facts instead of events as causal relata, thus establishing causal relations. As all facts about the past, the present, and the future exist in the present, we could explain how backward causation works and describe the discrepancy between personal time and external time in presentist time travel; in this way, I argue, we could vindicate the compatibility between presentism and time travel.
Źródło:
Filozofia Nauki; 2022, 30, 4; 101-117
1230-6894
2657-5868
Pojawia się w:
Filozofia Nauki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurement of delay using travel time reliability statistics in an urban outer corridor
Autorzy:
Reddy, Kanala Teja Vinay Kumar
Challagulla, Surya Prakash
Powiązania:
https://bibliotekanauki.pl/articles/2173478.pdf
Data publikacji:
2022
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
trip time
travel time
delay
city buses
passenger car
czas podróży
opóźnienie
autobusy miejskie
samochody osobowe
Opis:
Unexpected delay on freeways is the prime cause of dissatisfaction in road users. Increasing traffic, adverse environmental conditions, accidents, time, season, location and many more factors influence travel time and cause delay. There is no direct method to estimate delay. It is calculated from trip time estimates. Thus, it is a very big challenge for transportation professionals to develop a model that accurately estimates the trip time for a trip at a particular time, by a specific mode of transport. Subsequently, the reliability of the delay calculated from those trip time estimates is often doubtful. Further, the measurement of delay using the trip time data is another big thing. This paper is a step toward measuring the delay in an accurate way using travel time reliability measures. The study was conducted on the two modes of public transportation (City bus and Auto) in an urban corridor of length 16.3 km, in Hyderabad city, India. In this study, a license plate survey was conducted for data collection, travel time-based statistical analysis was employed for estimation of trip time and by making use of travel time measures, the delay was measured. The approach was validated graphically to portray its accuracy.
Źródło:
Zeszyty Naukowe. Transport / Politechnika Śląska; 2022, 114; 143--154
0209-3324
2450-1549
Pojawia się w:
Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An analysis of the influence of travel time on access time in public transport
Autorzy:
Soczówka, Piotr
Kłos, Marcin Jacek
Żochowska, Renata
Sobota, Aleksander
Powiązania:
https://bibliotekanauki.pl/articles/2134862.pdf
Data publikacji:
2021
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
public transport
travel time
access time
bus stop
transport publiczny
czas podróży
czas dostępu
przystanek autobusowy
Opis:
Sustainable mobility is a priority for transport systems in urban areas. Contemporary planning of transport systems assumes an increase in the role of public transport in everyday trips. To increase the share of trips using public transport, it is essential to improve the accessibility of public transport stops. The accessibility of such stops depends primarily on the distance between the trip origin and the stop. Many factors influence the distance that passengers are willing to travel. This paper discusses the relationship between the access time to the bus stop and travel time. To study such a relationship, various statistical methods may be applied. This paper presents the results of the analysis performed based on the data on trips made by inhabitants of Bielsko-Biała, gathered during the building of its transport model.
Źródło:
Zeszyty Naukowe. Transport / Politechnika Śląska; 2021, 111; 137-149
0209-3324
2450-1549
Pojawia się w:
Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of time of concentration on variation of runoff from a small urbanized watershed
Autorzy:
Amatya, D. M.
Cupak, A.
Wałęga, A.
Powiązania:
https://bibliotekanauki.pl/articles/100301.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie
Tematy:
urban areas
travel time
NRCS method
Kerby method
obszar miejski
czas podróży
metoda NRCS
Opis:
The main objective of the paper is to estimate the influence of time of concentration (TC) on maximum flow in an urbanized watershed. The calculations of maximum flow have been carried out using the Rational method, Technical Release 55 (TR55) procedure based on NRCS (National Resources Conservation Services) guidelines, and NRCS-UH rainfall-runoff model. Similarly, three methods were used to calculate the overland flow component of the TC: the Kerby method, the Morgali and Linsley method and the NRCS travel time method. The TC was calculated in a watershed located in Krakow city in Poland, małopolskie voivodeship. Total area of the watershed has about 180 ha. It’s a highly urbanized watershed with a significant land cover (29.6% of total area) influencing the runoff, in the form of an impervious industrial area. The highest value of time of concentration was achieved for Morgali and Lindley method in case of the subwatershed with dominant pervious areas, as opposed to the NRCS method for the subwatershed with dominant impervious areas. The highest value of TC was obtained for NRCS method. With reference to the whole watershed, the highest values of the time of concentration were obtained for the MorgaliandLindley method and the lowest for the Kerby formula. Based on this study, authors recomended the Kerby method for estimating TC for overland surface dominated areas because this method requires only a small number of input parameters, that are straightforward to estimate.
Źródło:
Geomatics, Landmanagement and Landscape; 2015, 2; 7-19
2300-1496
Pojawia się w:
Geomatics, Landmanagement and Landscape
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Traffic congestion level in 10 selected cities of Poland
Autorzy:
Caban, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/2091213.pdf
Data publikacji:
2021
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
city logistics
economic
extra travel time
TomTom Traffic Index
logistyka miejska
gospodarka
dodatkowy czas podróży
Opis:
Transport has a great impact on human activities but contributes to many negative phenomena occurring in road traffic, for example, road traffic accidents, emission of toxic exhaust fumes into the atmosphere and a high share of cars in road traffic. For the above reasons, many initiatives have been taken in the field of road traffic management and urban logistics. Based on a literature review, it was found that the problem of the phenomenon of traffic congestion in urban areas remains an ongoing issue. In the first part of this article, the theoretical issues of traffic flow and congestion formation in the city road networks were presented. While the second part outlines the situation of transport congestion in 10 Polish cities based on the worldwide TomTom Traffic Index in the years 2008-2018. This study is a brief analysis of the trends relating to transport congestion based on the TomTom Traffic Index in these cities.
Źródło:
Zeszyty Naukowe. Transport / Politechnika Śląska; 2021, 112; 17--31
0209-3324
2450-1549
Pojawia się w:
Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the influence of expressway emergencies on transmission speeds and travel delays
Autorzy:
Shi, Xianfu
Liu, Xingliang
Li, Menghui
Liu, Tangzhi
Powiązania:
https://bibliotekanauki.pl/articles/2173933.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
expressway
congestion
propagation
travel time delay
logistic velocity
droga ekspresowa
kongestia transportowa
transport drogowy
prędkość logistyczna
Opis:
Expressway emergencies tend to cause traffic congestion, and understanding the travel time delays of on-road vehicles under different combinations of event scenarios and road traffic conditions is valuable for guiding the accurate emergency dispatch services. Most existing studies used methods that combine the Lighthill-Whitham-Richards (LWR) theory and basic traffic diagrams to solve this problem, but the discrete traffic flow characteristics caused by the presence of heavy vehicles have not been considered, thus affecting the applicability of those results to road traffic characteristics in China. Moreover, there is a lack of systematic research on multiple combinations of unexpected event scenarios and traffic conditions, and the guidance value of the previously obtained results is limited. In order to improve the applicability of the prediction model and accurately predict the severity of emergencies, based on a logistic model that is applicable to emergencies, a velocity–density model is constructed to describe discrete traffic flow characteristics. Based on LWR theory, the internal driving force of expressway traffic state evolution under emergency conditions is explored. Combined with real-time traffic flow data, the parameters of the logistic model are calibrated, and a logistic velocity-density model is constructed using a goodness-of-fit test and a marching method, including the free-flow velocity, turning density and heavy vehicle mixing ratio. Thus, the problem that existing models lack applicability to road traffic characteristics in China is solved. Travel time delay is associated with the impact range of an emergency, and it is an effective index for evaluating the severity of emergency incidents. Thus, the travel time delays under different scenarios, different numbers of blocked lanes and different orthogonal combinations of approximate saturation conditions are explored, and the impacts of lane blockage on emergency incidents and travel time delays are obtained. The conclusions show that the presented logistic velocity-density model constructed based on discrete traffic flow characteristics can properly quantify the impact of the presence of heavy vehicles. Additionally, the results can provide theoretical support for handling emergencies and emergency rescues.
Źródło:
Archives of Transport; 2022, 63, 3; 7--21
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł

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