Thursday, May 16, 2019

Getting started with accident reconstruction

A traffic accident is an elephant that no one in the room wants to talk about. We talked about our daily lives and didn't think what might happen if we had a serious crash, because we always thought that our vehicles would not be lifted from deep valleys or loaded into a pile of twisted metal plates. truck. Unfortunately, statistics show that some people are more likely to read this article. from

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 Participate in a serious accident at some point in their lives. In addition, in our growing litigation culture, we will be involved as a plaintiff or defender in civil or criminal proceedings caused by a car accident, which is very realistic. If this happens, you should hire the best lawyer you can afford and keep as much evidence as possible. Every driver should understand what a typical accident study is, just to protect their interests after a terrible collision.

In general, accident rebuilders are professional experts and consultants, usually retained by legal advocates. We are often engineers, physicists, former police or highway safety professionals, but we focus on the experience and training of traffic collision analysis. Although we usually defend or prosecute a case for a legal defense attorney, we are independent of any particular "party" in legal proceedings. The story of each accident study is different, but the accident reconstruction personnel follow the old path to reach our expert opinion.

In the first consultation with potential customers, we can reject a case because we don't seem to provide any help [for example, their customers are obviously wrong, there is no reasonable accident in the reconstruction, the deadline is too early, etc.]. Sometimes, initial contact is made at the location of the incident to better understand the problem and situation and to make informed decisions about whether or not to participate. The accident rebuilders attempted to avoid being aggregated to present opposing views of our clients' cases.

Determine the facts. Usually, the first evidence item found in a typical document is the Traffic Collision Report [TCR] because they are called in California; otherwise they have other names. These documents are police investigations into accidents and from

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 Provide most of the factual information needed to perform the analysis. Although law enforcement has investigated some incidents more thoroughly than other incidents, most reports identify the parties and their vehicles, provide witness statements and contact information, provide some descriptions of the incidents that the investigators found, and may include some measurements. . And/or a chart describing the location of various physical evidence items. This evidence may include any tire marks, chisel marks, dirt marks, debris and vehicles. Rest point. It is hoped that the survey will include live photos, which are critical for any traffic collision report. It saw that the police did not always think so, because only about 50% of the collision incidents I investigated included scene photos, and less than half of the cases included from

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 Photographs are not prioritized for accident investigation training because most organizations do not. This is a terrible shame, because people's memories fade away over time, but photos can be kept at the scene of the accident without evidence collected or recorded in a temporary situation that no longer exists.

If you have been involved in a traffic accident, the best advice I can offer is that you do this. Do not Provide a statement to the police at the scene. This may seem a bit strange, because one is very concerned about the information provided in the police report, but it is in your best interest to provide a report. written Subsequent statements. After the accident, the mood is very fast, and one person may say inaccurate things because they feel guilty or saddened by another injured person. I have got never Read a statement that can help people who make it, but I have read hundreds of statements that led to their arrest. I recommend a written statement because the police are human beings and cannot expect them to explain your statement perfectly. Any discrepancies between your statement and what is recorded in the report can completely change what you say. Once an official submits his report, the statement cannot be recovered, so please choose your words carefully.

Site investigation. After we got the location and some details about the problem we were asked to evaluate, we visited the scene of the accident for an independent topographic survey. We conducted a survey because it was originally carried out by a traditional measurement company, but it is obvious that we pay special attention to any remaining physical evidence. The site is fully photographed and may include surface friction tests, line-of-sight measurements, video, radar speed measurements, illuminance level readings, ball library measurements, and any other tests required by the customer, or we think it will help us in In our investigation. Sometimes, when the scene of the accident is in another state or when we are subject to strict time constraints, other measurement companies will sign up for us to provide topographical measurements. However, most accident rebuilders are more willing to conduct their own investigations at the scene of the accident.

Vehicle inspection. If the subject vehicles are not destroyed or repaired, the rebuilders will check them to collect evidence that is useful for most research and is critical to product liability laws. As the vehicle is available, it can be checked at any time. My personal preference is to see the car before the on-site review, because sometimes problems occur during vehicle inspections, which can be answered by collecting evidence on site. If there are no clues found while inspecting the vehicle, I may miss the unusual or unique importance of the accident location.

Checking the vehicle can provide the severity of the impact, occupant movement, crashworthiness of the vehicle, use of the seat belt, clues to airbag performance, and may imply that the vehicle itself is in the cause of the accident [eg, tire puncture/blowout, electrical fire], Brake failure]. Most importantly, this information can sometimes be maintained by the owner through photos. Whenever you encounter a traffic accident, you should take as many photographs as possible of the vehicle before destroying or selling the parts. The value of these photos should not be underestimated, and people should not rely on 6, 8 or even 12 photos to tell the story. Movies are cheap, digital prints are even cheaper, so if you can do this, don't hesitate to take a hundred or more photos of your crashed vehicle.

Most vehicle inspections involve records of certain measurements that will then allow us to estimate the energy at which metal breakage and structural deformation dissipate in the event of an accident. Most people intuitively realize that the higher the level of permanent displacement for a vehicle form, the greater the effort to replace it. In strict Newtonian terms, if we consider the collision-related damage of the work result at the time of the accident, and the quality and speed of the vehicle in the collision provide the energy to perform the work, we can develop a formula to estimate the energy required to complete the work. If we can determine a reliable estimate of the energy of the work, we can draw conclusions about the speed changes that a particular vehicle may experience due to a destructive event. This may lead to some conclusions about the vehicle approach.

Find. For a period of time, according to the jurisprudence of laws and cases, legal thoughts will discover and provide us with other forms of investigation information. Discovery materials typically include testimony from subordinate witnesses to the TCR supplemental statement, deposits from appropriate highway officials who have an understanding of road history and design, testimony from other plaintiffs and other experts retained by the maintainer, and any photos related to this. The crash basically has no information and does not belong to the initial police investigation. The discovery sometimes delayed for many years, during which time information gradually penetrated into our offices. We will continue to work during the discovery process and revise our comments and conclusions as necessary, as we will receive new information. Our survey services are considered part of the discovery process because the reports and opinions we provide to our clients, with some exceptions, become part of the public record and must be provided to any party requesting them.

Accident reconstruction. Once we have collected enough findings, determined what we are evaluating and authorized, we can finally continue the reconstruction. Typically, this will first create an accident scene map based on our survey, TCR, and any scene shots taken at or near the time of the accident. When I first started working on the spot, I used to use the technical ink pen to manually draft everything before the popularity of the microcomputer. This is very time consuming, and as technology advances, I am happy to say that most people no longer use technical pens and lettering guides. I use AutoCAD and various third parties for all chart development...




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