Expert Witness

EDR support is expanding, and its changing collision investigation

More vehicles than ever now support Event Data Recorder (EDR) downloads, giving investigators rapid access to objective pre and post‑crash data that clarifies what happened,

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Event data recorders: Uncovering the hidden data in vehicles

About EDR - Part 4. Combining EDR data with other evidence can transform the understanding of the sequence of events in a collision
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Using EDR data to explain Sudden Unintended Acceleration (SUA) events

About EDR - Part 2. EDR has a particularly useful application in working out if the car accelerated on its own, or if the driver
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When is EDR data useful?

About EDR - Part 3. Five typical collision scenarios in which EDR data is extremely useful as forensic evidence
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Event Data Recorders

About EDR - Part 1. What is it, and how can it be used for collision investigation?
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Motorsports and leisure sports incidents

Motorsports incidents are rare, but many of the same techniques are applied in investigations.
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Case study: Equine collision investigation

An unusual case involving a horse and rider in a road collision, in which TRL's expert witness testimony earned praise from the judge
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Driving with a person trapped under your vehicle: would you know?

Dr Richard Lambourn looks at the factors involved in a very rare event and describes the physics involved which would provide evidential guidance to a
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Different approaches to supporting victims: how collision investigators work across industries to provide answers

The collision investigator's role in getting justice for the victim, supporting the victim's needs in a civil process, and contributing to research to prevent future
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Reflecting on the historic pioneering approaches of TRL

Reflections on TRL’s role in the investigation of the fatal collision involving Diana, Princess of Wales and Dodi Al Fayed and the pioneering approach which
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