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Forensic Investigations Home > Expert Witness

Category Archives: 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, when, and why. For insurers and legal teams, this means earlier certainty on speed, braking, steering inputs and seatbelt status, strengthening decisions on causation and liability at a point they…

October 7, 2025Expert WitnessBy Expert Witness

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

December 18, 2023Expert WitnessBy Expert Witness

A woman parked in a car in a carpark is distracted by the in car infotainment system.

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 pressed the wrong pedal

October 4, 2023Expert WitnessBy Expert Witness

When is EDR data useful?

About EDR – Part 3. Five typical collision scenarios in which EDR data is extremely useful as forensic evidence

August 11, 2023Expert WitnessBy Expert Witness

An airbag has exploded inside a car on the drivers' side

Event Data Recorders

About EDR – Part 1. What is it, and how can it be used for collision investigation?

August 11, 2023Expert WitnessBy Expert Witness

Motorsports and leisure sports incidents

Motorsports incidents are rare, but many of the same techniques are applied in investigations.

April 26, 2023Collision Investigation & Reconstruction, Collision Investigation training, Expert WitnessBy Expert Witness

close up of horses hooves running on asphalt

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

April 26, 2023Collision Investigation & Reconstruction, Expert WitnessBy Expert Witness

view in rear view mirror

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 court

April 26, 2023Collision Investigation & Reconstruction, Expert WitnessBy Expert Witness

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 collisions.

January 9, 2023Collision Investigation & Reconstruction, Collision Investigation training, Expert WitnessBy Expert Witness

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 not only provided much needed answers but also advanced collision investigation methodologies as a whole.

July 1, 2022Collision Investigation & Reconstruction, Collision Investigation training, Expert Witness, Vehicle Identification, Vehicle safetyBy Expert Witness
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