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Car black boxes /the problem of data acquisition and analysis for use in forensic science/
Lenková, Alžběta ; Schmidt, Drahomír
The amount of recording devices for independent installation to cars and trucks is increasing. These devices can be called cars’ black boxes. They measure the fundamental vehicle dynamics and record the actual GPS position of the car; alternatively they are able to record the video sequence. The usage of these devices for the vehicle accident analysis is undoubtedly advantageous. This article is aimed to the problematic of analysis of data acquired from these systems, definition of sources of uncertainties and errors. The aim of this article isn’t in the certain evaluation of any system. The aim is to give an impulse for the expert discussion in the field of demands and requirements to these independent systems from the forensic expertise point of view. A comparison with the EDR units is outlined.
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The issue of longitudinal safe distance between vehicles
Zemánek, Lukáš ; Prnka, Jiří
This technical article deals with the issue of observance of the longitudinal safe distance between vehicles. It contains an analysis of car accidents on roads in the Czech Republic, in respect of car accidents caused by nonobservance of the safe distance. It also deals with the legislative requirements for observance of the safe distance and at the conclusion is accomplished an analysis of observance of the longitudinal safe distance between vehicles (cars, vans and trucks) on D1 highway under various conditions.
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Porovnání halogenových a xenonových světlometů z hlediska viditelnosti chodců
Bradáč, Albert ; Semela, Marek ; Škoda, Jan ; Sumec, Stanislav ; Kledus, Robert ; Bilík, Martin
This case study presents a comparison of visibility and recognisability (discernibility) of objects – pedestrians – on the road in rural areas at night on encounter with low beam headlights fitted with halogen lights and xenon (high-intensity discharge) lights in one and the same vehicle model. The study was inspired by the results of dynamic measuring of the reactions of vehicle drivers to the presence of pedestrians on the right side of the roadway, where the results indicated subsequent reactions of drivers driving a vehicle fitted with xenon discharge lights. The study is therefore concluded with a static comparison that confirms the factual findings.
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Complex System of Traffic Accident Analysis - - Collision of Vehicles on the Crossroad
Semela, Marek ; Kolíbal, Zdeněk (referee) ; Prochazka, Eduard (referee) ; Bradáč, Albert (advisor)
Thesis deals with problems of forensic technical analysis of traffic accidents, concretely with creation of complex methodology for analysis of traffic accidents of vehicles on the crossroad. There are defined terms of "complex system and complex analysis of traffic accident", technically acceptable range of important input values, systematization of accidents on the crossroad with methodologies in the thesis. Thesis shows problematical expert procedures, suggests scheme of expert evidence and includes methodology of measurement of common movement of vehicles on the crossroad and recommendation for expert procedures.
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Use of Intentional Damage of Motor Vehicles in Forensic Engineering
Kapasný, Martin ; Šimko, Ľubomír (referee) ; Panáček, Vladimír (advisor)
This diploma thesis deals with creating a database of intentional damages of motor vehicles by selected tools and their documentation. Used tools can by often found in any household or workshop. First part describes how insurance and settlement of claim works. Next part deals with insurance frauds and in the third part damages are sorted into categories. Following part describes damages that incurred in actual traffic accidents and closures whether their were insurance frauds or not, and the susequent part is the creating of intentional damages and their processing into a database. In the end i tis described how such a database is an asset for forensic engineering.
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Selected Methods of Improvement for the Driver's Orientation on the Roads
Černoch, Adam ; Valentová, Veronika (referee) ; Frič, Jindřich (advisor)
The aim of this thesis is to find suitable measures which will lead to the improvement of driver orientation in traffic spaceleading to lower the accident rate in the area. The theoretical part describes the traffic surveys that relate to the topic. Furthermore, the work mentioned detectors used for the implementation of automated traffic surveys. The theoretical part also describes methods that can be used to analyze the selected location and then design the ideal modification. At the end gives an overview of the various measures. In the practical part are different methodologies used for the analysis of selected intersections. Firstly, the analysis of observed conflict situations, including making conflicting diagram, under which was designed to measure. Then, the analysis of traffic accidents. Again, the result was a proposal for possible actions. The main objective was to compare and appreciation of both methodologies and proces design measures to improve driver orientation in the selected location.
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Analysis of the Impact of Fixed Obstacles near Roads on the Course of Traffic Accidents
Hejsková, Veronika ; Semela, Marek (referee) ; Panáček, Vladimír (advisor)
This thesis named Analysis of the impact of fixed obstacles near roads on the course of traffic accidents deals with the diversification of fixed obstacles near the roads, brief theory of road accidents, possible consequences and shows statistics of road accidents with a fixed obstacle. The aim is to perform analysis of real traffic accidents with a fixed obstacle with serious consequences for health, life and property and with the help of a computer simulation software to analyze the same accident again, but for the condition if the fixed obstacle was removed. Finally, the consequences of accidents are compared, the analysis are evaluated and the proposed measures to eliminate the consequences are assessed.
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