Forensic Engineers and Consultants

Tag Archive: 3D collision reconstruction

  1. When Going Left is My Right

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    The lines on the roadway determine the right-of-way. Did you know a passing zone could limit your right-of-way?

    Passing a vehicle traveling in the same direction on a two-lane roadway should be done with great caution. Completing the pass without colliding with the vehicle being passed, other vehicles approaching from the opposing direction, and without losing control and leaving the roadway are vital. There are rules to passing that people forget; some are laws, others are just common sense. Let us take a look at the laws and what sometimes slips by people that can cause an unsafe pass. State laws may differ, so consider these for South Carolina roadways. (more…)

  2. “Introduction to Event Data Recorders (EDRs)” LIVE Webinar | October 22nd, 11am EDT

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    Accidents often have devastating consequences. Join WARREN’s Senior Collision Reconstructionist and President of S.C.A.R.S., South Carolina Association of Reconstruction Specialists, Aaron Duncan for an exclusive webinar on “Introduction to Event Data Recorders.”

    Learn from an expert how the information stored in this valuable tool can be utilized to help get to the truth of your loss.  Information like:

    • Change in Velocity
    • Vehicle Speed
    • Service Braking
    • Steering Angle
    • Safety Belt Usage
    • Seat Occupancy
    • Engine RPMs
    • Engine Trouble Codes
    • PLUS, many case studies to consider.

    (more…)

  3. Over the Hill

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    When traveling down the roadway, a lot of things must be considered. While things that can be seen are obvious concerns, things that cannot be seen pose a threat too. Blind hillcrests leave drivers guessing “what’s on the other side”. Regardless of their intentions, before drivers make a maneuver, they should pay extra attention to blind hill crests. In a collision that occurs just over a hillcrest, where one driver is attempting to continue straight as the other is attempting to make a left-hand turn, many times the investigating officer arrives at a common conclusion. Failure to yield right of way charges are often applied to the driver making the turn; however, are these charges applicable? (more…)

  4. The Pressure to Keep Rolling (Part 2)

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    One of the first safety concerns for your vehicle should be your tires. The tires on your vehicle or trailer maintain contact with the roadway and assist you in getting to your destination safely. So how do you know that your tires are proper for your vehicle, are being well-maintained, and beyond the obvious threat of tire failure, why is this important to know? (more…)

  5. The Pressure to Keep Rolling – Part 1

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    Over my years of law enforcement, crash investigation, and collision reconstruction I have come to become more and more particular about my tires. I have watched people purchase tires from these “used tire stores” and when I buy my tires I can understand why; quality tires are expensive. The question of how old is that tire and how was it serviced before it ended up for sale is a huge concern. (more…)

  6. Why investigators should have “Scaled Diagrams” of scenes?

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    When it comes to diagramming a crash scene, there are several methods to accomplish the task. Forensic Mapping, (locating, positioning, and documenting the evidence of a collision scene to scale) is essential to having the answers to the questions “Who, What, Where, When, and Why?”. Photographs do a great job showing what the investigators saw post collision; yet they lack scale and the ability to describe pre-collision movement. Having a computer aided diagram (CAD) of the collision scene goes much further than the pictures can; here is why.

    basic intersectionA scale diagram gives the full overview of a collision scene from either a 2D or 3D point of view. Being able to see how things lined up, how they came together and how they parted helps explain the events within a crash. When a scene can be viewed from top down or any angle, that helps relay the facts. The investigator, judge, or jury will get (more…)

  7. Piecing it Together…Traced Evidence

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    In the field of forensic investigations of traffic collisions, it can be repeated over and over that little things matter. It’s the details that align the facts to describe the event and answer the questions about the crash. Sometimes those details are simple, and they are often overlooked. The damage sustained by a vehicle involved in an accident tells a reconstructionist a lot. Your collision reconstruction could benefit from mapping the damage profiles of the involved vehicle(s) to assist in answering questions about the incident. (more…)

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