Dissertations / Theses on the topic 'Level intersections'
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Rencelj, Marco. "The methodology for predicting the expected level of traffic safety in the different types of level intersections." Doctoral thesis, Università degli studi di Trieste, 2009. http://hdl.handle.net/10077/3154.
Full textTraffic accidents cause high material and human losses, what is reflected in society. The logical result is the need for efficient road safety in designing a new and the existing road system. Slovenia is, like other new EU Member States, aware of its tasks for improving traffic safety. In accordance with very clear demands of European transport policy about road safety – that is an EU recommendation of halving the number of road accident victims in the European Union by 2010 – Slovenia has also put into its national program a decision to halve the number of dead casualties on Slovenian roads. Unfortunately, the current situation in the field of road safety in Slovenia is - despite the highly ambitious plans - still not satisfactory. It has to be admitted that traffic safety in Slovenia has been improved during the last years but we still have not achieved the objectives of reducing road accidents, injured participants or dead casualties. One of the "steps" to achieved desired level is also to improve existent road infrastructure. Road infrastructure improvement supposed to be applied to "black spots" first. For safety management it is well known, that we have three main motives for safety management: economic effectiveness, professional and institutional responsibility, and fairness. Survey among 25 EU states about estimating the most effective short, medium, and long term measures - both at national level and at EU level - shown, that measures related to infrastructure safety management (such as high-risk site management - black spot management), road safety audit and road safety inspection, are generally recognized as a high priority. While high-risk site management is a short-term measure, other infrastructure safety management measures make their impact in the medium to long term. One of the possible approaches to identification of "safety problems" (safety deficiencies: accident frequency, accident rate, accident severity) is also use of accident prediction models (APM). With those models and use of various criteria we can detect not only "black spots" but also "larger targets". A large number of "statistical predictive safety models" are described in the literature. Many attempts were done to use those models to establish a relationship between various traffic parameters and the number of accidents at road sections or road intersections. For statistical safety prediction models it is often suggested that accident occurrences are discrete, sporadic and random in nature. Thereby it is suggested to use Poisson regression models. The variation in accident occurrence is also considered to be due in part to the systematic variation in identified traffic measures such is traffic flow rates, measures of speed and intersection design parameters. Discrete, Poisson or negative binomial distributions are usefully applied to estimate the number of accidents that occur at road sections / intersections over a particular period of time. For accident prediction modeling the "generalized linear modeling" approach has been found to be particularly useful. This approach accounts for the fact that the dependent variable (e.g. number of accidents) does not need to be normally distributed (as is often the approach to describe the relationship between accident frequency and traffic flows on major and minor roads at intersections). For the purpose of this work I collect different types of data for 60 level intersections on state road network in Slovenia. I divide those intersections into four different groups: 3-leg without left turn lanes on major road, 3-leg with left turn lanes on major road, 4-leg without left turn lanes on major road and 4-leg with left turn lanes on major road. All intersections were in rural area - outside urban area - with limited influence (or no influence at all) of pedestrians or / and cyclists. For observed intersections I collect different types of needed data: data about traffic accident for last 5 years (from 2002 - 2006), data about traffic (AADT on major and minor road), data about geometrical elements of the intersections, alignment of legs and other needed data (lane / shoulder width, speed limit, lighting, present of left / right turn lanes, type of terrain etc.) After study of relevant literature I consider two different types of APM, which seemed to be correct and useful for my research work. I evaluate those different types of APM and made calculation for data which I obtained. At the end I made the correlation between those models with use of an empirical Bayesin method for calculating adjusted accident frequency.
XXI Ciclo
1973
Zhang, Zheshuo. "Dynamics of road vehicles crossing rail-road intersections." Thesis, Queensland University of Technology, 2019. https://eprints.qut.edu.au/132688/2/Zheshuo%20Zhang%20Thesis.pdf.
Full textGamble, Stephanie Nicole. "Conical Intersections and Avoided Crossings of Electronic Energy Levels." Diss., Virginia Tech, 2021. http://hdl.handle.net/10919/101899.
Full textDoctor of Philosophy
We study energies of molecular systems in which special circumstances occur. In particular, when these energies intersect, or come close to intersecting. These phenomena give rise to unique physics which allows special reactions to occur and are thus of interest to study. We study one example of a more specific type of energy level crossing and avoided crossing, and then consider another type of crossing in a more general setting. We find solutions for these systems to draw our results from.
Johnston, Nathan R. "Development of a Bicycle Level of Service Methodology for Two-Way Stop-Controlled (TWSC) Intersections." DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1168.
Full textAlmonte, Valdivia Ana Maria. "Level-of-service and traffic safety relationship an exploratory analysis of signalized intersections and multilane high-speed arterial corridors /." Orlando, Fla. : University of Central Florida, 2009. http://purl.fcla.edu/fcla/etd/CFE0002615.
Full textAlmonte-Valdivia, Ana. "Level-of-Service and Traffic Safety Relationship: An Exploratory Analysis of Signalized Intersections and Multiland High-Speed Arterial Corridors." Master's thesis, University of Central Florida, 2009. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3372.
Full textM.S.
Department of Civil and Environmental Engineering
Engineering and Computer Science
Civil Engineering MS
Kumar, Manjunathan. "A Preliminary Examination of Data Envelopment Analysis for Prioritizing Improvements of a Set of Independent Four Way Signalized Intersections in a Region." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/30852.
Full textMaster of Science
Ortolani, Giseli Aparecida. "Comparação do desempenho de dispositivos de interseções rodoviárias em nível utilizando o simulador Integration." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/18/18137/tde-20062017-102938/.
Full textThe work contains a performance evaluation of the traffic vehicles in the three types of Road intersections at grade used in Brazil, using as criteria the capacity relatively to the level of service. A comparative analysis of the performance of these intersections is also presented. The performance evaluation is made based on the supplied results by the INTEGRATION simulator. The three analyzed intersections, are: semi roundabout with priority for the vehicles of the main road, roundabout with priority for the vehicles the main road and roundabout with priority for the vehicles in the circular road (modern roundabout).In this research an analysis is also accomplished about some important aspects of the INTEGRATION logic and of the supplied results by the simulator in some specific cases, through the comparison of obtained values being varied some parameters, as well as the comparison with results supplied by other evaluation models of intersections performance with STOP SIGN and GIVE WAY traffic signs.
Braun, Kelsey. "Intersectional Sexual Minority Stress and Recognition of Macro-Level Dynamics." Digital Commons @ East Tennessee State University, 2021. https://dc.etsu.edu/asrf/2021/presentations/56.
Full textBurkhart, Craig. "Approval Voting Theory with Multiple Levels of Approval." Scholarship @ Claremont, 2012. https://scholarship.claremont.edu/hmc_theses/26.
Full textCarroli, Linda. "Regional planning in transition: Policy narratives at the intersection of regional planning and sustainable infrastructure transitions." Thesis, Queensland University of Technology, 2020. https://eprints.qut.edu.au/205320/1/Linda_Carroli_Thesis.pdf.
Full textRinaldi, Anthony P. "The intersection of counseling pychology and the prescriptive authority for psychologists movement: a qualitative exploration at the level of the professional organization." Diss., University of Iowa, 2017. https://ir.uiowa.edu/etd/5833.
Full textGreene, Pamela L. "A Multi-Method Dispositional Study of the Intersection of Democratic Citizenship and Education Policy from the Unique Perspectives of Twenty State-level Policymakers." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1259743242.
Full textTippabhotla, Anupama. "Interaction patterns and web-structures of resonant solitons of the kadomtsev-petviashvili equation." [Tampa, Fla.] : University of South Florida, 2005. http://purl.fcla.edu/fcla/etd/SFE0001242.
Full textDel, Mar Velarde Alberto Martín, and Palomino Inés Esluvia Vásquez. "Propuesta para la reducción del congestionamiento vehicular en las avenidas La Marina y Faustino Sánchez Carrión, desde la Av. Antonio José de Sucre hasta la Av. Gregorio Escobedo, mediante el uso del software Synchro 8." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2019. http://hdl.handle.net/10757/625953.
Full textTraffic congestion has become a constant in city life, and Lima is not the exception. However, there are actions that can be implemented to minimize the time lost when traveling on high-traffic routes, especially during rush hours, such as the case of the road network formed by the Faustino Sánchez Carrión and La Marina avenues, from Gregorio Escobedo Ave. to Antonio José de Sucre Ave. In that context, the purpose of this project is to provide an alternative of road offer management which contributed to improving traffic measurement indicators; among them, saturation degree, intersections level of service that are part of the research, and delays due to waiting time. In doing so, Synchro 8 is used. This simulation software functions as a support for the solution model generation, which is performed at the mesoscopic level. Synchro is compatible with the Highway Capacity Manual - HCM 2000 and 2010; but also, it has a set of tools that allow it to incorporate its own analysis technique. In the case of this project, traffic evaluation is developed on the basis of vehicular operation system by means of the HCM 2010 Automobile Methodology; that is, the pedestrians and cyclists analysis are not taken into consideration. The results obtained show that it is possible to optimize vehicular traffic through the correct use of traffic simulators and not only through large-scale geometric interventions, or with excessive investment in new infrastructure.
Tesis
Yang, Qing. "Segmentation d'images ultrasonores basée sur des statistiques locales avec une sélection adaptative d'échelles." Phd thesis, Université de Technologie de Compiègne, 2013. http://tel.archives-ouvertes.fr/tel-00869975.
Full textJelena, Mitrović Simić. "Nivo usluge na nesignalisanim pešačkim prelazima." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2016. http://www.cris.uns.ac.rs/record.jsf?recordId=99735&source=NDLTD&language=en.
Full textThe study, which was conducted within the thesis, has served to define a mathematical model that can be applied in the process of determining the level of service at unsignalized pedestrian crossings. The formed model for motorist yield rate, in terms of the local pedestrian traffic flow, depends on pedestrian and vehicular flow rate, traffic flow structure (the share of buses and freight vehicles), and vehicle moving at the location of a pedestrian crossing. The pedestrian gap acceptance behaviour has also been analysed. Comparative analysis of acceptable and critical pedestrian gap was conducted. Model of pedestrian behaviour, which depending on the site characteristics, was formed and it has been proven a correlation between the length of the accepted pedestrian gaps and the roadway and traffic conditions, gender characteristics and the number of pedestrians at unsignalized crossings.
Tischler, Kathleen. "Neue Ansätze zur Nutzung von Induktionsschleifen-Daten an Lichtsignalanlagen." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-200896.
Full textFakhfakh, Nizar. "Détection et localisation tridimensionnelle par stéréovision d’objets en mouvement dans des environnements complexes : application aux passages à niveau." Thesis, Ecole centrale de Lille, 2011. http://www.theses.fr/2011ECLI0005/document.
Full textWithin the past years, railways undertakings became interested in the assessment of Level Crossings (LC) safety. We propose in this thesis an Automatic Video-Surveillance system (AVS) at LC for an automatic detection of specific events. The system allows automatically detecting and 3D localizing the presence of one or more obstacles which are motionless at the level crossing. Our research aims at developing an AVS using the passive stereo vision principles. The proposed imaging system uses two cameras to detect and localize any kind of object lying on a railway level crossing. The cameras are placed so that the dangerous zones are well (fully) monitored. The system supervises and estimates automatically the critical situations by detecting objects in the hazardous zone defined as the crossing zone of a railway line by a road or path. The AVS system is used to monitor dynamic scenes where interactions take place among objects of interest (people or vehicles). After a classical image grabbing and digitizing step, the processing is composed of the two following modules: moving and stationary objects detection and 3-D localization. The developed stereo matching algorithm stems from an inference principle based on belief propagation and energy minimization. It takes into account the advantages of local methods for reducing the complexity of the inference step achieved by the belief propagation technique which leads to an improvement in the quality of results. The motion detection module is considered as a constraint which allows improving and speeding up the 3D localization algorithm
Nemanja, Deretić. "Model proračuna kapaciteta manevra levog skretanja sa prioritetnog prilaza nesignalisane raskrsnice." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2018. https://www.cris.uns.ac.rs/record.jsf?recordId=107590&source=NDLTD&language=en.
Full textBefore the left turn manoeuvre, from priority approach at TWSC unsignalized intersection, the driver estimates the interval occurring in the conflict flow and chooses the one which is most acceptable for him. The time required for evaluation of acceptable interval is presented by the service waiting time of vehicles at an intersection. With the appearance of an acceptable interval, service waiting time for vehicle ends, and then starts a time for performance of left turn manoeuvre. A decision about the moment of starting left turn manoeuvre is subjective and based on a driver’s estimate. Correct subjective evaluation always reserves the safety time. This dissertation presents development of a detailed mathematical procedure for calculation form of safety time. Measurements at unsignalized intersections are proven applicability of the proposed model, possibility of calculation subjective safety time and high participation of safety time in critical gap (about one-third). The obtained results are highly consistent with HCM.
Černoch, Adam. "Vybrané způsoby zlepšení orientace řidiče v dopravním prostoru." Master's thesis, Vysoké učení technické v Brně. Ústav soudního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-233053.
Full textZhang, Lin. "Signalized intersection level-of-service that accounts for user perceptions." 2004. http://proquest.umi.com/pqdweb?index=0&did=813790001&SrchMode=1&sid=2&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1233964918&clientId=23440.
Full textHa, Tae-Jun. "Development of safety-based level-of-service criteria for isolated-signalized intersections." 1994. http://catalog.hathitrust.org/api/volumes/oclc/31456234.html.
Full textTypescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 244-250).
Zhang, Lin 1956 Sept 25. "Signalized intersection level-of-service that accounts for user perceptions." Thesis, 2004. http://hdl.handle.net/10125/12118.
Full textIncludes bibliographical references (leaves 211-220).
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Seish, Hwei Siung, and 謝惠雄. "Study on Evaluation Method for safety-oriented Level of Service at Signalized intersections." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/75032491096996970335.
Full text國立臺灣大學
土木工程研究所
82
Signalized Intersection,because of complex stream and high conflict,is usually the main part of Traffic Safety Analysis and Level of Service Evaluation. Traffic Safety Analysis can be helpful to find concealed hazard and then to draw up proposals to keep the public from danger. Moreover,Level of Service Evaluation helps to see if road supply fit the demand of roar users.It is an important issue for traffic safety study that how to combine Traffic Safety Analysis with Level of Service Evaluation, and to identify the role of Level of Safety Service and to analyze traffic safety systematically. This study is different from the Level of service based on the efficiency view. apply the concept of Fuzzy Theory,it starts with the view of safety to fit road users'' respose to the Level of Service Evaluation,and,furthmore,to link safety,efficiency, and environment together.Also,considering the characteristics of weighting,it set a model for compound Level of Service.The aim of this study is to give a new explanation to the definition of Level of Service and to make the Level of Service evaluation and the cut of Level more flexible.However,due to the limitof time and labor,the model of Level of Service is still not ready for Exposure. Therefore, the model of Exposure base and that of Validation is still kept for continuous study. This study, compounding Aggregate Accident Analysis, Disaggregate Accident Analysis, Level of Service Evaluation Structure,Applied Analysis of the Model of Evaluation,Estimate of Safety Improvement Strategy and Establishment of Traffic Safety Information System,sets a procedure of safety improvement planning.By applying the model of Level of Service Evaluation ,the Level of Service is both quantified and more flexible, the Interval of each Level is exchangeable,and the Method of Fuzzy Cluster Analysis could verify the evaluation performance to be the base of improving safety.
Lee, Soo-Beom. "Development of safety-based level-of-service parameters for two-way stop-controlled intersections." 1995. http://catalog.hathitrust.org/api/volumes/oclc/34501153.html.
Full textTypescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 212-219).
Niewczyk, Paulette Marie. "Health care disparities in Buffalo, New York the intersections of individual and community level factors /." 2007. http://proquest.umi.com/pqdweb?did=1331403191&sid=2&Fmt=2&clientId=39334&RQT=309&VName=PQD.
Full textTitle from PDF title page (viewed on Nov. 16, 2007) Available through UMI ProQuest Digital Dissertations. Thesis adviser: Street, Debra. Includes bibliographical references.
Deng, Jun active 2013. "A novel approach to modeling and predicting crash frequency at rural intersections by crash type and injury severity level." Thesis, 2013. http://hdl.handle.net/2152/23634.
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Cunha, Irene Dias Ferradeira. "Planeamento e gestão da infra-estrutura viária urbana: o caso da Póvoa de Varzim." Master's thesis, 2009. http://hdl.handle.net/1822/10614.
Full textO elevado crescimento da população urbana e o decorrente desenvolvimento económico, social e urbanístico tem tido como consequência um aumento global das deslocações em meio urbano. Tal fenómeno origina frequentes vezes perda de qualidade de vida das populações das cidades, tornando cada vez mais premente a procura de soluções para mitigar esses problemas. Também, as estratégias de intervenção tradicionais baseadas no aumento sistemático da capacidade das infraestruturas viárias têm originado custos elevados para a sociedade ao nível económico, social e ambiental, o que obriga os responsáveis pela gestão da mobilidade urbana à pesquisa de novas estratégias de actuação. Contudo, nomeadamente a nível municipal, a necessidade de garantir uma rede viária eficiente é crucial pois facilita a movimentação de pessoas e bens, tendo por consequência um impacto positivo directo na vitalidade da economia local. Neste contexto, a presente dissertação pretende contribuir para o estudo e avaliação da infra-estrutura viária da cidade da Póvoa de Varzim, nomeadamente das vias pertencentes à rede primária e secundária definidas no actual Plano de Urbanização da Póvoa de Varzim. Tendo por base os pressupostos de planeamento e gestão de engenharia de tráfego, em particular os definidos pelo Highway Capacity Manual 2000, avalia-se o nível de desempenho de um número significativo de vias fulcrais da rede. Para as situações identificadas pela análise como de mau desempenho são apontadas directrizes que visam ajustar a oferta da rede à procura previsível do tráfego. Ainda, atendendo a que uma gestão eficaz da rede só é possível através de uma optimização da relação “qualidade/investimento”, é discutida uma solução que visa o dimensionamento de pavimentos standard a aplicar no futuro nas vias segundo a sua classe hierárquica e de acordo com o tráfego previsível.
The emergence of fast growing in urban population and the direct consequences for the economic, social and urban development origin an traffic volume increase in urban areas. This phenomenon often causes loss of quality of life for city’s population, making more urgent the research of better solutions. Also, the traditional strategies based on a systematic increase of the capacity of urban collector and arterial roads maintain high economic, social and environmental costs for society. Thus, news strategies must be implemented to manage urban mobility. Nevertheless, particularly at municipal level, an efficient road network is a crucial element to foster the mobility of people and goods, normally with a direct and positive impact on the local economy vitality. In this context, this dissertation aims to study and evaluate the urban road infrastructure in the city of Póvoa de Varzim, mainly the primary and secondary roads identified in network of the Urban Development Plan for the City. The study and evaluation of the roads and intersections was carried out with the knowledge from planning and traffic engineering, particularly from Highway Capacity Manual 2000. For problematic situations are recommended some guidelines to mitigate and adjust the roads network of the city. Furthermore, the network management is only possible through the optimization of the ratio "quality/investment" so the study also propose a design of standard pavements for the roads according to the network hierarchy classification and the traffic forecast.
Chen, Yiwen, and 陳怡彣. "Driver Perception on Level of Service at Signalized Intersection." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/79451157430063652847.
Full text國立暨南國際大學
土木工程學系
100
This study takes the driver’s perception into consideration to further assess the level of service at signalization intersection. Motorcycle riders and car drivers are our main targets. Videos of different levels of service were pre-recorded and then presented to the respondent in the survey. Ordered probit model was applied to estimate the effects of important factors on the driver’s perception towards different levels of service at signalized intersection. Results obtained from the model showed trip, socioeconomic, road related characteristics (pavement condition, geometric design, traffic control, etc.) and weather condition were all significant variables influencing the driver’s perception towards different levels of service at signalized intersection. Our results can provide a reference when planners and related authorities assess levels of service at signalized intersection. This study investigates the willingness to accept for delay times under different levels of service at signalization intersection. Motorcycle riders and car drivers are our main targets. Videos of different levels of service were pre-recorded and then presented to the respondent in the survey. Contingent valuation method was applied to design different scenarios for corresponding levels of service. Spike model was then used to obtain the willingness to accept for delay times. The results found that the willingness to accept for delay times ranges from 26 to 68 seconds for motorcycle riders, while from 34 to 81 seconds for car drivers, under different levels of service at signalized intersection. It is worth to note that the delay times are longer than the ones set in Taiwan Highway Capacity Manual, indicating Taiwanese drivers are willing to accept longer delay times under different levels of service at signalized intersection.
Bitca, Andrian. "Rephasing of the intersection of city hall of Leiria." Master's thesis, 2016. http://hdl.handle.net/10400.8/2149.
Full textDlamini, Nobuhle Judith. "The impact of the intersection of race, gender and class on women CEO's lived experiences and career progresson : strategies for gender transformation at leadership level in corporate South Africa." Thesis, 2014. http://hdl.handle.net/10500/13828.
Full textBusiness Management
Tischler, Kathleen. "Neue Ansätze zur Nutzung von Induktionsschleifen-Daten an Lichtsignalanlagen: Minimierung von Fahrzeughalten und Schätzung von Kfz-Wartezeiten." Doctoral thesis, 2015. https://tud.qucosa.de/id/qucosa%3A29422.
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