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Dynamic parameters of sports and conventional vehicles
Tesař, Michal ; Janoušek, Michal (referee) ; Vémola, Aleš (advisor)
This master´s thesis is focused on chosen dynamic parameters of a sport vehicle represented by student formula Dragon 7 and comparison of these parameters with conventional vehicles represented by two exemplars of ŠKODA Superb III. Driving tests used for the comparison are simulating the real driving situations from the roads in order to possibly use those for the road accident analysis in the future. All the measurements were taken under lower adhesion conditions which might help solving of the road accidents under such conditions in the future. There is also a description of vehicle driving systems and components which have an influence on the vehicle´s driving dynamics incorporated in the thesis.
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The Influence of Passive Safety Features During Vehicle Collisions with Pedestrians
Mrázek, Jan ; Vémola, Aleš (referee) ; Tokař, Stanislav (advisor)
This thesis deals with the influence of passive safety features during vehicle collisions with pedestrians. The first part focuses on introducing the basic components of active and passive vehicle safety. The second part deals with construction and usage of modern components of passive safety during vehicle collisions with pedestrians. A comparing situation model of vehicle collisions with pedestrian is introduced in the third part for which a simulation programme has been used. At the close of this part there is a result synthesis of these model situations. The last part deals with the possibility of increasing pedestrian safety.
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Analysis of Vehicle Damage after a Minor Car Accident
Psica, Lukáš ; Rábek, Vlastimil (referee) ; Vémola, Aleš (advisor)
The thesis deals with the analysis of small accidents. Its attention is focused on the estimated amount of money needed to repair a vehicle immediately after the accident and later on the real amount that is actually necessary to fix the vehicle. In practice, it often happens that an accident may seem minor at first glance. Only after dismantling of a damaged vehicle and its parts it is found that the damage is much greater than initially predicted. Attention is focused as well on constantly growing insurance frauds. Nowadays, there is no literature concerning this issue.
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Processing of selected terminology at road accident analysis
Tokař, Stanislav ; Šachl, Jindřich (referee) ; Kropáč, František (referee) ; Drahotský, Ivo (referee) ; Vémola, Aleš (advisor)
The thesis deals with the terminology used in forensic engineering practice at the analysis of road accidents. It means defining the concepts describing specific expert research in the area of car accident analysis such as the option of evasive action and the possibility of preventing collision. Further on, the thesis focuses on the terminology used in areas closely related to analysis of road accidents namely dealing with cases of criminal activities in the field of motor vehicle insurance from an expert point of view. In this area, terms such as extent of the damage, character of the damage, correspondence of the damage and the technical acceptability of accident, are solved. These terms constitute a formal process that can serve as a tool for experts when dealing with such cases. In addition, selected terms from the technical-legal area, which the experts often encounter, are processed here. At the same time, there is no uniform approach to their evaluation from a technical perspective. Here, there is a possibility of setting the limits of a sudden change of speed and a sudden change of direction.
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Comparison of Vehicle Handling Characteristics
Kalábová, Barbora ; Semela, Marek (referee) ; Vémola, Aleš (advisor)
This thesis deals with the analysis of the car driving characteristics depending on the type of drive wheels. The first chapter defines the basic theoretical cars concept as well as procedures for determining the individual variables needed to identify the driving dynamics of vehicles. The practical part describes the plan and the progress of realized measurements on a selected pattern of vehicles, and the measured values are interpreted. The final part deals with the evaluation of the performed measurements and the data identified within these measurements.
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Analysis of the influence of misuse and tire inflation on the stability of the vehicle in a limit situation
Porč, Karel ; Panáček, Vladimír (referee) ; Vémola, Aleš (advisor)
This diploma thesis focuses on incorrect inflation and incorrect use of tires in extreme situations. In the first part, a search of previously created works is reported. This is followed by the elaboration of the basic theory, which describes the driving dynamics of the vehicle, braking and construction, marking, wear and inflation of tires. The next part is the measurement and evaluation of the effect of incorrect inflation and use of tires. Braking deceleration and evasive maneuvers were performed as tests. The third part is an evaluation and summary of the situation.
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Road Pricing and its Impact on Road Traffic in the Czech Republic
Novák, Jaroslav ; Máša, Vojtěch (referee) ; Vémola, Aleš (advisor)
This thesis deals with the toll systems which have been in operation in the Czech Republic since 2007. The first part defines the basic concepts of transportation and describes the development, goals and the direction of transport policy of the European Union, and the Czech Republic. It also describes the different ways of collecting tolls on roads and the possibility of charging for entrance into cities. The second part analyses the current state of the toll system, not only in our country, but also in neighboring countries. Practical knowledge is supplemented by the hand counting of trucks, avoiding toll communication and a questionnaire survey among carriers. The third part is focused on proposals for solving current situations. The aims are: bring trucks back to the toll roads, reduce the noise levels on highways at night, improve the quality of roads in the Czech Republic, increase user comfort levels of toll systems and increase the number of "green" trucks on the roads
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Analysis of Deceleration of Trolleybuses and Evaluation of its Impact on Standing Passengers
Semmler, Petr ; Škrabal, Jaroslav (referee) ; Vémola, Aleš (advisor)
This thesis is focused on analysis and evaluation of the trolley deceleration effect on his standing passengers. The first part focuses on theoretical knowledge in terms of legislative requirements for the operation of trolleybuses and transport standing passengers. This section also lists physical findings during deceleration and forces acting on the vehicle. The central part is divided into two measurements. The first measure is aimed at obtaining data (deceleration) and information (number of passengers, increased stability, and fall) of the normal operation of the standing passengers in interior trolley. The second measurement will be focused on driving performance demonstration tests with the interior trolley helpers in various traffic situations. The conclusion of this thesis will summarize the values and knowledge of both measurements. The evaluated data set will limit the slowdown in the trolley passengers where standing still maintains stability.
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Analysis of Deceleration of Trams and Evaluation of its Impact on Standing Passengers
Skupová, Dagmar ; Fleissig,, Petr (referee) ; Vémola, Aleš (advisor)
The thesis is concerned with establishing the braking retardation and determining of it's influence for standing passengers. The thesis consists of three parts. The first part is theoretical and it is engaged in brake system of tramway. The second, experimentally part talks about practical establishing of braking retardation. And the third part of thesis is gived to discussion about established values of braking retardation. The aim of thesis is to find a value of braking retardation, when standing passengers don't fall down.
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