Motor Vehicle Accident Expert Witness
Forensic Engineers for Motor Vehicle & Car Accident Investigation, Analysis & Reconstruction – Australia Wide Service
Gilmore Engineers provides motor vehicle accident analysis and reconstruction across Australia, covering car and passenger vehicle incidents, pre-incident speed, skid mark, and pre-impact position analysis. For truck accidents, see our truck accident investigation page; for motorcycle accidents, see our motorcycle accident investigation page.
Last updated: July 2026 | Reviewed by: Matt Gray
Gilmore Engineers specialises in forensic engineering and providing high-quality mechanical engineering analysis and reconstruction services for motor vehicle accidents across Australia.
With over 30 years of experience in the field, our team of skilled mechanical engineers is well-equipped to analyse and reconstruct accidents involving single or multiple vehicles, vehicle rollovers, or component failures, regardless of their complexity.
Our Abilities
Our engineers are not just limited to accident reconstruction but also possess the expertise to calculate pre-incident speeds, estimate stopping distances, analyse skid marks, determine field of vision of drivers, and determine pre-impact vehicle positions. These skills enable our team to provide comprehensive analysis and insights into the causes and contributing factors of a motor vehicle accident, allowing for an informed understanding of the event.
Court Cases
Lawyers often seek our services for accident analysis, particularly when there are claims for serious personal injury or death, significant property damage, or their clients are being charged with a serious offence. Our analysis and reports can provide essential evidence in court cases, helping to support legal arguments and provide valuable insights into the circumstances surrounding an accident.
We have provided over 1,500 reports to lawyers, members of the legal profession and loss adjusters for cases before the District, Supreme, and Federal Courts.
Our Process
Our process begins with an engineering assessment in the form of a verbal opinion after examining the evidence available. If required, this opinion can be provided as a comprehensive report for the Court. Our experts can then follow through by presenting their evidence to the Court in person on your behalf, providing valuable insights and supporting legal arguments with solid evidence.
We Also Provide Specialist Investigation Services For:
- Truck accident investigation, analysis and reconstruction
- Motorcycle accident investigation, analysis and reconstruction
Gilmore Engineers has the experience and expertise to provide you with the best possible service. We are committed to maintaining the highest standards of professionalism, ethics, and quality in all aspects of our work. With a proven track record of delivering outstanding results, we are confident in our ability to meet your accident reconstruction needs.
Gilmore Engineers is a mechanical engineering consultancy firm in Brisbane with experience with car accidents. Contact us today to learn more about our services and how we can assist you with your accident reconstruction needs.
Reports Contain
For lawyers, members of the legal profession and loss adjusters
- Pre-incident speed analysis
- Passenger car head-on impacts
- Vehicle rollover
- Skid mark analysis
- Head light and tail light on / off analysis
- Pedestrian impacts
- Determination of seat belts being used
- Stopping distances calculation
- Position of vehicle pre-impact
- Motorcycle and Bicycle impacts
- Tyre, suspension, brakes, steering and other component failure
Remote Accident Inspections
Gilmore Engineers implemented new technology in response to pandemic travel restrictions. This enables remote inspections and virtual meetings. Virtual options save a significant amount in travel time and costs; so they remain an option now that normal travel has resumed.
When You Need a Motor Vehicle Accident Expert Witness
| Best for | Not ideal for |
|---|---|
Legal claims involving serious personal injury, death, or significant property damage in a car or passenger vehicle accident Cases requiring speed, skid mark, or pre-impact position analysis Court cases requiring an independent expert report and testimony | Truck accidents — see our dedicated truck accident page Motorcycle accidents — see our dedicated motorcycle accident page |
Frequently Asked Questions
What does a motor vehicle accident analysis involve?
A motor vehicle accident analysis examines evidence such as skid marks, vehicle damage, road conditions, and component condition to determine pre-incident speed, cause, and contributing factors, typically resulting in a written expert report.
Do you investigate truck or motorcycle accidents too?
Yes. We provide dedicated investigation services for truck accidents and motorcycle accidents, in addition to car and general motor vehicle accidents.
Will the engineer give evidence in Court?
Yes, if required. Our experts present their findings to the Court in person and respond to questions from the judge and barristers for both parties.
Do you work outside Brisbane?
Yes. We investigate motor vehicle accidents Australia-wide, including cities like Brisbane, Sydney, Melbourne, the Gold Coast, and the rest of Australia.
Motor Vehicle Accident Case Studies
Car Accident – Vehicle Speed
The driver of a motor vehicle involved in a collision was charged with dangerous driving causing death. A critical aspect of the case was the claimed speed of the vehicle before the impact. Our engineer was able to review the available evidence and determine the likely speed range of the vehicle based on tyre skid marks left at the incident scene, measured road friction, slope, and the impact damage.
Potential Steering Failure
A 4WD vehicle left the road and crashed into a house. Gilmore Engineers were engaged in inspecting the vehicle to look for any contributing factors to the incident. It was found that the steering box was disconnected from its’ mounting, with some bolts broken, and others missing altogether. Our engineer then performed more detailed analysis and material testing to establish if the failure proceeded the incident or was a result of damage caused during the accident.
Car Accident – Lights on or off analysis
Gilmore Engineers were provided with globes from headlights, brake lights and indicator lamps of a vehicle involved in a car accident in Sydney. Our engineer examined the remains of the globes under a microscope. He then determined which of the globes were likely to have been illuminated at the time of the impact.
Bouncing Rock
A football-shaped rock was struck by a vehicle travelling at 100km/h. It was claimed that the rock rolled and bounced high off the bitumen road, striking another vehicle and injuring one of the occupants. Our engineer used advanced computer simulation to map the potential path of the rock showing that the bouncing motion was indeed possible, and was much like that of a Rugby ball.
Road Sign Blocking View
Gilmore Engineers investigated an incident at an intersection on a curved section of road. Our engineer walked along the road, taking measurements and photographs, then also drove the incident path taking video with dash and hat mounted video cameras. Based on the evidence collected, he was able to show that the large blue rest area ahead sign played a significant part in blocking the view of approaching traffic and contributed to the incident.
Offset Frontal Collision
When two vehicles were involved in a head-on collision, their pre-impact positions were questioned. It was requested that our engineers determine the location of the vehicles before impact. Other investigators had estimated the pre-impact location using theory that applies to full-frontal collisions. However, the evidence showed that the collision was an offset frontal impact. Our expert was able to provide a more accurate pre-impact location using the dynamics of offset frontal impacts.
Caravan Wheel Failure
Gilmore Engineers determined that a fatal crash occurred after a caravan wheel separated due to insufficient tension on the wheel nuts, which allowed the wheel to slide against the hub and progressively fracture the studs; evidence included displaced hub coating, thread impressions in the wheel holes, and signs of bending fatigue. They further concluded that a painted or coated hub surface reduced friction and compressed under load, worsening the loss of clamping force, and noted that a prior similar failure on the same caravan model showed nearly identical patterns. Routine wheel‑nut re‑tensioning and avoiding coatings on mating surfaces were identified as key measures that could have prevented the incident.