Thèses sur le sujet « Powered Two Wheelers Safety »
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Savinoa, Giovanni, Roberto Lotc, Matteo Massaro, Matteo Rizzi, Ioannis Symeonidis, Sebastian Will et Julie Brown. « Active safety systems for powered two-wheelers : A systematic review ». Taylor & ; Francis, 2020. https://publish.fid-move.qucosa.de/id/qucosa%3A72237.
Texte intégralBlackman, Ross Alexander. « The increased popularity of mopeds and motor scooters : exploring usage patterns and safety outcomes ». Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/52685/1/Ross_Blackman_Thesis.pdf.
Texte intégralRowden, Peter John. « Development and formative evaluation of a motorcycle rider training intervention to address risk taking ». Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/64240/1/Peter_Rowden_Thesis.pdf.
Texte intégralPrabhakar, Yadu. « Detection and counting of Powered Two Wheelers in traffic using a single-plane Laser Scanner ». Phd thesis, INSA de Rouen, 2013. http://tel.archives-ouvertes.fr/tel-00973472.
Texte intégralCoquelet, Cécile. « Les différences de sexe chez les conducteurs de deux roues motorisés : approches sociologique et psycho-sociale ». Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0195/document.
Texte intégralThe powered two-wheelers (PTW) riders’ accidentality is at the heart of road safety issues. This PhD thesis is part of a comprehensive approach to generate knowledge on sex differences and sex stereotypes conformity within this very masculine stereotyped community. It first showed that female motorcyclists have much lower injury crashes and fatalities rates than males. A first study showed that males declared more intentional risky behaviors and female more non-intentional risky behaviors. A second study showed that the PTW type chosen had a more important effect on the aberrant behaviors than sex. A third study showed that individuals who conformed to masculine stereotypes declared more violations than those who conformed to feminine stereotypes (declared more lapses), whatever their sex. Motivations to ride a PTW explaining this relation. Finally, this work showed that sex stereotypes associated with motorcycle riding already existed on the adolescent population, from the age of 11, even if they are themselves moped riders or if at least one of their parents is a rider. As a conclusion, significant differences between male and female PTW riders were revealed, in terms of accidentology and risk taking. These differences are linked to the riders’ conformity to their sex group and to the effects of this conformity on their motivations to ride a PTW. Moreover, it also showed that sex stereotypes exist for this specific road users’ population. This work led to a more detailed understanding of PTW riders’ aberrant behaviors, and to enrich the thinking for actions with regard to road safety education and prevention
Assmayr, H., D. Geyer et G. Schwab. « Autonomes Fahren ist der Trend der Zukunft ». Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-211616.
Texte intégralGashaw, Sosina Mengistu. « Modélisation de trafic routier hétérogène pour systèmes de transport intelligents ». Thesis, Université Côte d'Azur (ComUE), 2018. http://www.theses.fr/2018AZUR4202/document.
Texte intégralThis dissertation models and analyzes heterogeneous traffic flow, with a particular focus on mixed traffic flow consisting of cars and two-wheelers. The increase in traffic congestion induces commuters to switch to powered two wheelers (PTWs), i.e. motorcycle, mopeds and scooters, because of their high maneuverability and space efficiency. The growth in number of PTWs, combined with their unique mobility features, results in complex traffic characteristics which are difficult to recreate with the existing modeling approaches. We develop an analytical model that can accurately reproduce the traffic features in a mixed flow of cars and PTWs. The traffic stream is decomposed into two vehicle classes, PTWs and cars. The fundamental properties are derived by employing a porous flow approach. It is assumed that the speed of a vehicle class is dictated by the physical and motion properties of the vehicle class, and the distribution of free spaces on the road. We propose an approximation method to derive the free-space distribution. In order to explore broader aspects of the traffic flow characteristics, notably required by intelligent transport system (ITS) applications, we formulate the model in the Lagrangian and the Eulerian frameworks. Further, we provide a numerical method for the discretization of the mathematical model. We analyze the flow characteristics of mixed PTWs and cars traffic and identify important properties, which give insights for future ITS solutions and traffic policy makers. The applicability of the model for different ITS applications is illustrated. Finally, the developed model is validated using a microsimulation tool
Cherta, Ballester Oscar. « Evaluation biomécanique d'un dispositif de protection airbag pour motocycliste ». Thesis, Aix-Marseille, 2020. http://www.theses.fr/2020AIXM0207.
Texte intégralPowered two-wheelers (PTW) users represent 28% of world traffic fatalities and 18% of traffic deaths in the European Union. Provide effective protective equipment for motorcyclists seems critical to reduce their mortality and morbidity. Wearable airbag protectors aim to protect the trunk of the motorcyclist, but evaluating the effectiveness of these safety devices remains complex due to its dependence on many factors related to the accident and to the airbag itself.The objective of this research project is to better understand motorcyclist trunk trauma in order to propose a relevant evaluation method for the improvement of wearable airbag protectors’ design and development. This work is divided into three main parts:1. Epidemiological and accidentological studies allowed identifying the thorax as the most vulnerable region of the trunk and collisions with cars as the most frequent accident scenarios.2. Multibody simulations showed that during the accident, trunk impacts with the car are more frequent and more severe than impacts against the ground. The frontal region of the thorax is the most impacted zone of the trunk and sustains the most severe impacts.3. Finite element simulations focused on the motorcyclist allowed developing a new method to evaluate the protection capacities of wearable airbag protectors against realistic impact conditions.Based on injury criteria from the literature, our method showed the effectiveness of the airbag device in mitigating ribcage and internal organ injuries as well as the benefits of wearing the protector under a motorcycle jacket
Smaiah, Sarra. « Système de reconstruction de trajectoire pour véhicules deux roues motorisés ». Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASS022.
Texte intégralThe drivers of Powered Two Wheels vehicles are considered among the most vulnerable road users, as attested by the number of crashes increasing every year. The significant part of mortalities related to single vehicle “without identifying a third party” is related to the loss of control in bends. These thesis work is based on an instrumented motorcycle platform with a multi-sensor system. We have proposed algorithms to accurately reconstruct motorcycle trajectories achieved when negotiating bends. This system is intended to objectively evaluate and examine the behavior of drivers when negotiating bends in order to better train them. The goal is to lead them to adopt a safe trajectory in order to improve the road safety. Data required for the trajectory reconstruction are acquired using an instrumented motorcycle embedding several redundant sensors (reference sensors and low-cost sensors) that measure the rider’s actions (roll, steering) and the motorcycle behavior (position, velocity, acceleration, odometry, heading and attitude). This work is a part of the ARN project VIROLO++. The solution we have proposed allows to reconstruct bikes trajectories in bends with acceptable accuracy. The developed algorithm will be used to objectively evaluate and examine how riders negotiate bends. The embedded system carrying this algorithm can be used for the initial training and retraining in order to better train motorcycle drivers to estimate a safe trajectory and thus ensure safety when taking bends
Attal, Ferhat. « Classification de situations de conduite et détection des événements critiques d'un deux roues motorisé ». Thesis, Paris Est, 2015. http://www.theses.fr/2015PEST1003/document.
Texte intégralThis thesis aims to develop framework tools for analyzing and understanding the riding of Powered Two Wheelers (PTW). Experiments are conducted using instrumented PTW in real context including both normal (naturalistic) riding behaviors and critical riding behaviors (near fall and fall). The two objectives of this thesis are the riding patterns classification and critical riding events detection. In the first part of this thesis, a machine-learning framework is used for riding pattern recognition problem. Therefore, this problem is formulated as a classification task to identify the class of riding patterns. The approaches developed in this context have shown the interest to take into account the temporal aspect of the data in PTW riding. Moreover, we have shown the effectiveness of hidden Markov models for such problem. The second part of this thesis focuses on the development of the off-line detection and classification of critical riding events tools and the on-line fall detection. The problem of detection and classification of critical riding events has been performed towards two steps: (1) the segmentation step, where the multidimensional time of data were modeled and segmented by using a mixture model with quadratic logistic proportions; (2) the classification step, which consists in using a pattern recognition algorithm in order to assign each event by its extracted features to one of the three classes namely Fall, near Fall and Naturalistic riding. Regarding the fall detection problem, it is formulated as a sequential anomaly detection problem. The Multivariate CUmulative SUM (MCUSUM) control chart was applied on the data collected from sensors mounted on the motorcycle. The obtained results on a real database have shown the effectiveness of the proposed methodology for both riding pattern recognition and critical riding events detection problems
Kerbouai, Hamza. « Modélisation, dimensionnement et optimisation d'un capteur hybride pour la détection des deux roues motorisées dans le trafic routier ». Thesis, Belfort-Montbéliard, 2015. http://www.theses.fr/2015BELF0260/document.
Texte intégralFor several years the road safety numbers show the need to develop a technological tool that aims to know thepowered two wheelers vehicles behavior (2PW) to improve their security. From this problematic arise our researchworks that come under the project METRAMOTO (Powered two wheelers traffic measurement for road safety andrisks assessment). The main objective is modeling, sizing and optimization of an hybrid sensor consisted ofelectromagnetic loops and piezoelectric shock sensors. The idea is to use electromagnetic loops to discriminate the2PW presence from the other vehicles, combined with piezoelectric segments to detect the shocks produced by thevehicles wheels passage, all associated with a management algorithm and data processing. Today the sizing of thedetection systems based on electromagnetic loops or piezoelectric cables is done experimentally on controlled sitesusing several vehicles types. This technique requires significant test series which are costly and dangerous. Thisstudy aims to modeling the different interactions between the studied sensor and vehicles in order to its sizing.Electromagnetic and electromechanical models are developed to describe the different interactions that take placebetween electromagnetic loops on the one hand, between electromagnetic loops and vehicles on the other handand those between vehicle wheels and piezoelectric cable. On the basis of established models, a general approachis elaborated driving to sizing the hybrid sensor for any given road. We are also interested to the data processingcoming from the hybrid sensor for which we propose an approach to identifying the different vehicle categoriesincluding the 2PW. Two sensor configurations for two different roads are then proposed. They are associated atdata processing algorithms allowing the acquisition of loops and cables signals, the distinction between the differentvehicles classes, the estimation of the vehicles positions on the road and the measuring of their speed
Klein, Achim. « Annoyance indicators for various urban road vehicle pass-by noises and urban road traffic noise combined with tramway noise ». Thesis, Vaulx-en-Velin, Ecole nationale des travaux publics, 2015. http://www.theses.fr/2015ENTP0002/document.
Texte intégralNoise pollution is a major concern for residents of urban areas. To date, the European directive 2002/49/CE requires member states to represent community noise through noise maps. These are produced using the Lden (day-evening-night level) index which is also employed for dose-effect relationships in noise annoyance prediction. However, for the assessment of noise annoyance in urban areas, its relevance is often questioned. Numerous studies have shown that noise annoyance due to community noise is not solely based on the sound pressure level and other acoustical signal characteristics such as temporal and spectral features influence noise annoyance ratings. This thesis aims to improve the assessment of noise annoyance due to various road vehicle noises in cities. It is based on experiments carried out in laboratory conditions and comprises two main parts. The first addresses the enhancement of the physical and perceptual characterization of annoyance due to various urban road vehicle pass-by noises, such as buses, poweredtwo- wheelers, heavy vehicles and light vehicles. A specific focus is put on the characterization of annoyance due to powered-two-wheelers which are among the most annoying road vehicles and studied little in the existing literature. An indicator accounting for annoyance-relevant auditory attributes of urban road vehicle pass-by noises is determined: it comprises loudness, a spectral index and two modulation indices proposed in this work. In urban agglomerations, people are often exposed to road traffic in presence of a variety of other environmental noise sources. The focal point of the second part is on the prediction of total annoyance due to urban road traffic noise combined with tramway noise. In the aim of adequately characterizing total annoyance, first the perceptual phenomena involved in annoyance due to the combination of the sources are studied. Furthermore, the analysis allows for the testing of the proposed noise annoyance indicator for the characterization of urban road traffic noise. To characterize annoyance due to tramway noise, an indicator determined in a recent study is employed. Based on these indicators and the findings regarding perceptual phenomena, models for the prediction of total annoyance due to combined urban road traffic and tramway noise are proposed
PENUMAKA, AVINASH PRABHAKAR. « Design of integrated safety system for powered two wheelers ». Doctoral thesis, 2010. http://hdl.handle.net/2158/596127.
Texte intégralBRENNA, CLAUDIO. « Studio del comportamento di un motociclista durante una manovra pre-crash e sua modellazione in ambiente virtuale ». Doctoral thesis, 2008. http://hdl.handle.net/2158/590121.
Texte intégralSAVINO, GIOVANNI. « Development of the Autonomous Braking for Powered Two Wheeler Application ». Doctoral thesis, 2009. http://hdl.handle.net/2158/596158.
Texte intégralGrassi, Alessandro. « Belted Safety Jacket : a new concept in motorcycle passive safety ». Doctoral thesis, 2018. http://hdl.handle.net/2158/1128888.
Texte intégralLee, Wei, et 李威. « Powered-two-wheelers kinematic characteristics during passing, overtaking and filtering in urban arterials ». Thesis, 2015. http://ndltd.ncl.edu.tw/handle/78045319852393871519.
Texte intégral國立交通大學
運輸與物流管理學系
103
The mixed traffic flow on urban arterials in Taiwan is composed of motorcycles, cars and buses. The number of motorcycles per inhabitant in Taiwan is overwhelmingly higher than that of the rest of the world. However, current microscopic simulation software made for foreign countries may fail to reflect the driving characteristics and behaviors of motorcycles in the mixed traffic flow for Taiwan. This research aims to analyze the driving characteristics of motorcycles during passing, overtaking and filtering. For the past decades, the research progress on traffic flow studies for mixed traffic has been largely limited by the difficulties of collection for microscopic traffic data. Nevertheless, apparatuses for aerial photography along with digital-image processing software have improved greatly in recent years. In this study, the video database of mixed traffic flow for Zhongxiao E. road in Taipei city has been established and then applied to computer-programmed analysis. The actions of motorcycles about passing other vehicles are defined and categorized into three types, namely, passing, overtaking and filtering. The behaviors and frequencies are then analyzed. Out results show that among three behaviors, passing happens the most, then overtaking and filtering. Regarding to the average speed of the powered-two-wheelers (abbreviated ptw), passing has the highest speed mainly due to the simple pathway in the flow, and is less influenced by vehicles on both sides. Therefore, passing has the highest average ptw speed and lower traffic risk and thus happens most frequently on roads. On the other hand, the overtaking of motorcycle to the other vehicle on their left side is more frequently happened than that on the right side. Due to the higher speed on the fast lane and the inconvenience that may encounter when buses stop at the curb lane, motorcycles tend to overtake the other by their left side. In the case of filtering, straight filtering happens the most and has the highest speed in all filtering behaviors. During filtering, the speed difference between filtering ptws and the vehicles on their right side is greater than the other, due to the common illegal parking on the curbside. Furthermore, the average filtering gap on the right side is smaller than the other two pathways. In this study, we focused on the analysis of the characteristics of passing, overtaking and filtering behaviors, and established a judging system accordingly. On the basis of the initial results, the average speed, speed difference to the surrounding vehicles, distance between vehicles, filtering gap were further determined. Results of the analysis of variances (ANOVA) show that the driving speed, speed differences and distance between vehicles during passing and overtaking behaviors varied with significant differences. Although in the past researches, passing is often confused with overtaking, the analysis result in this study may suggest that these two acts are actually entirely different.
Navarro, Maria Teresa Alaniz. « Concept development of a foot protective device for urban powered two wheelers drivers ». Master's thesis, 2012. https://repositorio-aberto.up.pt/handle/10216/98568.
Texte intégralNavarro, Maria Teresa Alaniz. « Concept development of a foot protective device for urban powered two wheelers drivers ». Dissertação, 2012. https://repositorio-aberto.up.pt/handle/10216/98568.
Texte intégralJou-HanChen et 陳柔涵. « The Speed-Density Relationship in Heterogeneous Traffic Containing Pedestrians, Bicycles and Powered Two-Wheelers ». Thesis, 2017. http://ndltd.ncl.edu.tw/handle/8w99q6.
Texte intégral國立成功大學
都市計劃學系
103
Local streets traffic speed control in residential areas or commercial areas require attention in the planning and design stages. With the increase of various kinds of automobile transportation modes, mixed traffic context which contains motorized and non-motorized vehicles has not been uncommon to be seen nowadays. As the street users such as pedestrians, bicycles and powered two-wheelers have total different kinematic characteristics, they might cause huge disturbance to each other in the traffic. The aim of this study is to investigate the speed profile under different density group in heterogeneous traffic in local streets. To conduct this study, the trajectories of the street users in local streets were observed in a two-dimensional and microscopic manner. Data were collected at a food street near a university in Tainan. Different dimensions of virtual lane by various types of street users were found to establish the speed-density models. Models were able to depict the speed profile properly. The models to describe the relationship between the speed and the density were established to reflect the speed profiles of the street users in mixed traffic. The results show that the local street surrounding with food shops provided a luxurious atmosphere where people moved at their own speeds and directions. Low speeds occur frequently under low density. Also, bicycles are the most competitive traffic mode in this environment with their flexibility easily weaving in and out in the traffic flow. The results provide basic knowledge for local street design in traffic control.
Po-YuLee et 李柏昱. « Modeling the Spatial Distribution of Modal Split of Passenger Cars and Powered Two-Wheelers in Tainan Metropolitan Areas Using Geographically Weighted Regression ». Thesis, 2016. http://ndltd.ncl.edu.tw/handle/49125441385477631977.
Texte intégral國立成功大學
都市計劃學系
104
The number of powered two-wheelers (PTW) and passenger cars is still increasing in many developed and developing countries. Due to the huge amount of PTWs and cars in modern cities, they have become one of the most important issues in city planning and transportation. This study is aimed toward gaining a more comprehensive understanding of why people choose motor vehicles as their daily travel mode and illustrates the use of the Geographically Weighted Regression (GWR) technique to estimate the strength of the relationships between accessibility, urban form characteristics, and social economic characteristics for each administrative neighborhood in Tainan Metropolitan Areas in Taiwan. The study area includes 412 administrative neighborhoods and fifteen districts. Ordinary least squares (OLS) and GWR were conducted to examine the effect of potential covariates and to compare their outputs. The results show that PTWs dominate the road traffic in the Tainan metropolitan areas. On the other hand, results of the GWR models in both transportation modes were found to be better than in the OLS method. In general, the results indicated accessibility, entropy of land use, and average income have significant influences on vehicle usage. Accessibility was found to have a negative relationship with the usage of cars, while intersection distance and average income were found to be proportionate to the usage rate of cars. Entropy parameters, which reflect the degree of land use mix, varied across the study areas. The coefficients of all of the variables satisfied statistical significance tests in the usage of the PTW model, the results for which also varied from place to place. These results indicate that compared to cars, the use of PTWs is much more local and more easily influenced by local geographic characteristics. The findings may provide informative insights for planners and policy makers to shape vehicle use in urban areas and surrounding exurbs.