How Can an Accident Reconstruction Play a Role in Proving Fault?

Whenever there’s a car accident, there’s the potential for dispute over who was at fault. Sometimes this dispute is simple to settle because the evidence is crystal clear. But often, the evidence can be difficult to read, and it will be important for your San Antonio car accident attorney to bring in an accident reconstruction specialist to help everyone understand what really happened.

Accident reconstruction uses scientific analysis to re-create the events of a car accident. Accident reconstruction experts are usually forensic specialists or engineers, and their training allows them to examine evidence like damage to a vehicle, skid marks on the road, and the testimony of witnesses, and put it all together to determine how and why a car crash happened.

As they reconstruct the scene, these experts can often clarify critical details that will matter for liability, such as a driver’s speed, whether a driver braked, whether one driver failed to yield, etc. Because these specialists are not only highly educated and experienced but also completely neutral in the case itself, their testimony holds a lot of weight with both insurance companies and courts.

Reconstructing the scene starts as your expert does a detailed investigation of the crash scene itself and all the available evidence. You and your lawyer will have collected a lot of data already, like photographs, witness statements, and police reports, but the reconstruction expert may also revisit the scene to measure the skid marks or debris patterns and just get a feel for the entire area.

These days, such experts also have access to incredible tools that help them in their work, such as laser scanners that can map the scene of an accident precisely. Information from these scanners can then be fed into computers and various models can be tested. These models may be able to show that there is only one possible explanation for the evidence, or they may be able to at least rule out certain explanations by showing all possibilities for how the vehicles moved and interacted to reach the final point. The specialist will also often combine this computer model information with their own expertise, the testimony of witnesses and police reports, and more to create a clear timeline of the events.

But an expert’s job is not done once they have reconstructed the accident scene. An equally important part of their job is to explain all this in a way that laypersons can fully understand. Much of what these experts do is highly technical, and some people with great technical skills of that sort cannot explain what they’re seeing and doing to the average person; but a good expert witness has the communication skills necessary to help an insurance company or a court understand the details of what their models and investigation have shown.

A substantial amount of evidence is required to establish a compelling case and prove fault. Some of the physical evidence that the expert witness will examine includes tire marks, which can often indicate braking or swerving, and damage patterns on the vehicles, which not only reveal the force with which the vehicle was struck but also the impact angle. The expert will also need to consider any environmental factors that might have been in play, like wet roads or bad lighting.

Digital evidence can sometimes confirm the analysis, and this might be in the form of dash cam footage or data from a vehicle’s “black box.” Witness testimony is typically cross-referenced with the physical findings, and each piece goes together to strengthen the case and provide a comprehensive view of true fault. The idea is to make it very hard for the at-fault party to dispute their liability.

Accident reconstruction testimony is highly valued by courts and insurance companies because it provides an objective, science-based perspective. Eyewitness statements can be biased or inconsistent, and witnesses sometimes forget the details of what they have seen. The two drivers also typically have a bias in the matter, not to mention that neither driver is likely to have had a comprehensive understanding of the entire accident picture. When you’re busy driving and trying to deal with the immediate effects of an accident, it’s easy to miss something that might be going on outside your vehicle. Testimony from a reconstruction specialist is different. It uses measurable data, such as the length of a skid mark or a vehicle’s weight, to perform scientific calculations of speed or stopping distance.

Consider this scenario: one driver is held primarily responsible for an accident by running a red light, and the fact that they did this is very clear. However, the responsible driver’s insurance company is claiming that the other driver was speeding and should thus be held 20% liable for the accident (which would allow them to pay that driver 20% less, since Texas law allows personal injury claims to be reduced by the same percentage as a victim’s fault). The black box status of the second driver’s car may indeed confirm that they were speeding, but that does not actually tell us whether their speeding had any effect on the accident or not. An accident reconstruction specialist may be able to come in, and, by doing measurements and calculations and feeding information into computer models, show that the speeding made a three-second difference in braking speed and that this either did contribute to the accident or was not enough time to make a difference.

Limitations to Reconstruction Testimony

Working with Your San Antonio Car Accident Attorney