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Over 200 must-have accident reconstruction formulas at your fingertips in this revised Third Edition. This unique resource is designed to provide, in an easy to use format, the majority of the equations needed for accident reconstruction and investigation. Designed for flexibility and ease of use, each equation is expressed in three formats: algebraic; modified long form; and spreadsheet format. Formulas and constants for converting between metric and imperial units are provided for worldwide use.
This handbook is prepared for the daily, practical needs of those who are involved in traffic accident analysis, investigation, and reconstruction, whether they be in the training, police, private, or legal professions. It also meets international requirements in that all formulae and explanations are provided in both the English (U.S.) and metric (S.I.) measurement systems. In all cases, the two systems are dealt with separately so as to avoid any unnecessary confusion. Provided also are many tables and constants relating one system to the other so that those who may normally work under one system but use reference materials in the other will have a readily accessible means of making any necessary conversions. After an introductory chapter describes the various symbols used in traffic accident investigation and reconstruction, subsequent chapters include very comprehensive formulae required in problem-solving involving acceleration and acceleration factors; center of mass; drag factor and coefficient of friction; slide-to-stop speed; yaw, sideslip, or critical curve speeds; acceleration, distance and time calculations; momentum speed; combined speeds, and distance and time calculations. Additionally, there are various other formulae and mathematical, velocity, and conversion tables presented. All 160 formulae and their various uses are set out in a uniform, easy-to-read, and understandable format. Whether in law, law enforcement, or private or insurance investigation, this book provides traffic accident investigators and reconstructionists with the data they need to perform their job accurately and efficiently.
EVIDENCE IN TRAFFIC CRASH INVESTIGATION AND RECONSTRUCTION begins with a detailed description of the entire investigation process. The material then graduates into the various phases and levels of investigations, showing the levels of training and education normally associated with the levels of investigations and consequently the duties and responsibilities of the investigator and reconstructionist. Using narrative, schematics, and photographs, the mechanical inspection process is described in detail by identifying various vehicle parts, explanations of their functions, and methods of identifying failures. Human-related factors in traffic crash investigations are discussed at length, including the traffic crash viewed as a systems failure. Looming vulnerability, a recently developed theoretical construct that helps to describe and understand social, cognitive, organizational, and psychological mechanism, is described. Discussed also is the role of vision in driver performance; perception as a four-way process; perceptions and reactions; driver's reaction to stress; and the roles of pathologists, medical examiners, and coroners in traffic crash reconstruction. Who is an expert and expert evidence are described in detail. Errors that can occur in the investigation process and the tolerances that should be considered or allowed are explained. The manual also discusses the importance of calling upon the skills and advice of occupational specialists, such as reconstructionists, lawyers, traffic engineers, pathologists, medical examiners and others, to assist in the investigation and reconstruction of a crash that will ensure that the objectives of a thorough and complete investigation will be satisfied. Considerable effort has been made in the manual to explain how to identify, interpret and analyze all forms of highway marks and damages that can be used in the reconstruction of a vehicle-related crash. As a guide for investigators, prosecutors and defense attorneys, checkboxes are provided with many of the major topics that can be used as prompters in evaluating the thoroughness of an investigation or for those areas that might or might not need additional coverage at trial or litigation proceedings. To meet international requirements, mathematical references are described in both English (U.S.) and SI (metric) measurement systems, accompanied by various appendices covering symbols and mathematical conversions. Finally, there is a comprehensive quick-find index that takes the reader directly to any topic, formulae, or subject matter - or any combination of these.
Rev. ed. of: Technical traffic accident investigators' handbook.
The purpose of this book is to bring to the student an understanding of the basic physics involved not only in traffic crash investigation and reconstruction but also in crimes or other incidents where the movement of objects or persons is involved. The range of topics included are those considered to be fundamental and which best serve the purposes of illustrating the methods and procedures vital as an introduction to physics. Essentials of the subject as related to vehicle motion are stressed. The mathematics used is kept simple and in straightforward, easy-to-understand language. Comments and examples and a very comprehensive list of terms and definitions, supported by many illustrations and diagrams, are provided to give the reader a unified view of basic physics. All materials are prepared in both the English (U.S.) and metric (S.I.) systems. The text is intended to serve a need for investigators who possess a good knowledge and understanding of elementary algebra and trigonometry, and who have successfully completed at least an at-scene traffic crash investigation course and wish to further their knowledge towards competency in advanced traffic crash investigation and reconstruction.
This new second edition has been prepared to meet the everyday field requirements of traffic accident investigators and reconstructionists who have a responsibility to obtain and document measurements at traffic crash scenes as well as those who have the responsibility to prepare follow-up plans or scale drawings from such measurements. The manual explains in detail the various types of situations requiring measurements that can be encountered during the on-scene investigation. These are followed by a large variety of examples of how to take measurements and document them in an easily understood and appropriate manner. Examples are accompanied by solutions to problems and, in applicable circumstances, mathematical solutions are worked out in both the United States (Imperial) and metric (SI) measurement systems. The author conveys an authoritative understanding of triangulation, coordinate and grid measurements, angles, circles, curves, and includes horizontal and vertical measurements. The book is generously illustrated, and the appendices contain the United States to metric conversion tables, mathematical tables, and traffic accident investigation measurement record forms.
As a traffic accident investigator or reconstructionist, you probably have the common speed and sliding formulas memorized. However, there likely are formulas out there that you haven't committed to memory. And, while it's not practical to carry around a large textbook to every accident scene, having some type of reference would make your job easier. That is why the Pocket Traffic Accident Reconstruction Guide was created.Timothy Stabb, the author, created the Pocket Traffic Accident Reconstruction Guide to be an easy to use reference for anyone investigating a traffic accident. The guide is a pocket-sized booklet containing over eighty equations to compute vehicle velocity/speeds, distance, time acceleration rates and more. Designed to fit in a shirt pocket, day planner or briefcase, this handy guide also contains a glossary of traffic collision terms, a list of helpful websites, a table of roadway friction coefficient values and a conversion multiplier.It contains equations for:Converting speed from MPH to FPS, Converting velocity from FPS to MPH, Airborne projectile motion, Center of gravity mass, Pedestrian impact, And many more.
The analysis of a traffic accident requires additional knowledge that is not normally taught during the university education. Therefore, the analysis of road accidents usually is performed by specialized experts. The knowledge required for this was published in the early 80s in a previous German edition of this book. Now a team of authors created the long overdue update. The authors are experts in their field and make their knowledge available in a contemporary representation. In this computer-aided methods of work are taken into accountas as well. Content Accident survey - instrumentation - data for the calculation - kinematics - driving operation - kinetics - dynamics - information perception - speed calculation - collision mechanics - pedestrian - bicycle - cars - commercial vehicles - rollovers - rail based vehicles - biomechanics - occupant motion - simulation - animation Target groups Experts in accident reconstruction and damage assessment Traffic judges, prosecutors, lawyers Vehicle engineers Traffic police in training Insurance professionals in the claims settlement Insurance adjusters