Gorski Consulting

Gorski Consulting is a forensic motor vehicle accident reconstruction firm offering expert analysis and opinion to the legal, insurance, and private plaintiff/defendant communities for the resolution of civil and criminal litigation issues.

Since 1980, Zygmunt Gorski, the principal of the firm, has worked in the safety research and accident reconstruction fields. He has provided reconstruction analysis and expert opinions and testimonies for hundreds of vehicle accidents.

Services

Vehicle Examinations

Site Surveys

Crash Data Recorders

Video Analysis

Accident Analysis

Expert Reports

Trials and Testimony

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Site and Vehicle Examinations

If possible, call us immediately after an accident occurs so we can attend the crash site and document evidence before it is altered and destroyed. We can also provide examinations after vehicles are moved to a holding compound.

During examinations, we use still and video cameras to document evidence and measure the site to create a scale diagram. Any evidence found is secured for analysis. At the holding compound, vehicles are photographed and the location of collision evidence is measured along with the profile and magnitude of crush. The status and functioning of safety devices are documented – the Crash Data Retrieval toolkit is used to download crash data from air bag control

Accident Analysis

If required, we re-attend the collision site or vehicle for additional observations and analysis. At a collision site we may set up a roadway grid to document the speed, position, and specific behaviours of drivers – captured by video camera mounted to a 20-foot pole. The output displayed from a radar gun is videotaped to assess the likely speed of typical vehicles, which is used as a reference toward estimating the actions of an accident-involved driver.

We re-create night time accident scenarios using similar vehicles and lighting conditions. Police assistance may be used to close a road segment or natural reactions are obtained without a driver’s awareness of the testing.

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NASS

The National Automotive Sampling System (NASS), a division of the U.S. National Highway Traffic Safety Administration (NHTSA), is an invaluable database to those in the insurance and legal industries.

The Crashworthiness Data System (CDS) of NASS keeps data on thousands of crashes. Research teams at Primary Sampling Units across the country study 5,000 crashes annually. Skid marks, fluid spills, broken glass, and bent guardrails are studied at crash sites. Vehicles are then located to be photographed, measured, and to identify the interior locations struck by occupants. Researchers then interview crash victims and review medical records to determine the nature and severity of injuries.

There are more than 140,000 crash files in the NASS CDS. Although they are designed for analysis with a specialized statistical analysis package, analysis can also be conducted simply by going to the Web site and selecting a list of cases meeting specified criteria.

Recent Posts

Painted Cycling Lane Safety: Theory Versus Reality

Painted Cycling Lane Safety: Theory Versus Reality

Observations of cyclist interactions with motor vehicle traffic are crucial to understanding possible safety problems and selecting practical solutions. In this example a westbound cyclist is shown in a painted cycling lane and we observe the scenario unfolding in a...

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Recent Collisions: No New Surprises, No Real Changes

Recent Collisions: No New Surprises, No Real Changes

This partial rollover of a tractor-trailer on Hwy 401 near Toronto continues to demonstrate that almost all median barriers in Ontario are insufficient for interaction with tall, heavy vehicles. The same list of safety problems continue to make the news head-lines in...

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Failures To Focus 0n Vehicle Fires

Failures To Focus 0n Vehicle Fires

Vehicle fires are dangerous even when occupants are fortunate to escape without injury. This is an important point that is often overlooked. In a June 29, 2024 Twitter (X) post by Grenville OPP a photo of a burned out vehicle was shown along with the following...

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School Bus Collision in BC Re-Ignites Seat-belt Issue

School Bus Collision in BC Re-Ignites Seat-belt Issue

The importance of keeping children as safe as possible while being transported on school buses requires that all involved make an effort to understand the challenges while not allowing opportunities to make improvements fall into the dustbins of apathy. The Premier of...

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Humbolt Broncos – Truth Is An Annoying Little Mosquito

Humbolt Broncos – Truth Is An Annoying Little Mosquito

It has been over six years since the tragic death of 16 persons, and many injured, on a bus carrying the Humbolt Broncos hockey team in the Canadian Province of Saskatchewan. Now the incident has been pushed into the back pages of history, except for the infrequent...

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Automatic Emergency Braking Will Finally Become Law

Automatic Emergency Braking Will Finally Become Law

Emerging technology cannot solve all of safety problems. And in some instances it just creates new ones. But Automatic Emergency Braking (AEB) is one technology is that should improve far more than it complicates. Recently the U.S. National Highway Traffic Safety...

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Zameer’s Innocence Raises Sudden Interest In Justice

Zameer’s Innocence Raises Sudden Interest In Justice

Apparently you just need an obvious innocence to waken the sleeping public? So now many official entities are questioning why Umar Zameer was charged with first degree murder. Let us roll back the tape... A collision reportedly occurred in the underground parking...

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McNorgan Found Guilty Without Full Discussion Of Issues

McNorgan Found Guilty Without Full Discussion Of Issues

This court exhibit showing the front end of McNorgan's damaged vehicle illustrates that the public is given only narrow glimpses of the issues surrounding the tragedy where an innocent girl was struck and killed on Riverside Drive on November 30, 2021 in London,...

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School Bus Rollover In Oxford County A Lucky Result?

School Bus Rollover In Oxford County A Lucky Result?

Impressions in the ditch are the only signs remaining where a school bus rolled over south of Sweaburg in Oxford on Tuesday morning, March 5, 2024. Yet there was also a long length of tire marks preceding the rollover and these provided some clues as to the actions of...

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No Answers For Family in Linda Mindle’s Collision Death

No Answers For Family in Linda Mindle’s Collision Death

This photo of Linda Mindle was provided by family members. Mindle was killed in a collision on June 6, 2023 near Acton, Ontario. We have been here many times before: A family member dies and then police refuse to provide even basic information about how and why that...

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2023 Data on Cyclist Helmet Use in London Ontario

2023 Data on Cyclist Helmet Use in London Ontario

Gorski Consulting has conducted observations of almost 1000 cyclists in London, Ontario during the year 2023. Cyclist helmet use is one of the parameters being monitored. As in previous years Gorski Consulting has obtained observations of cyclist helmet use in London,...

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School Bus Double Fatal Collision Near Brampton Ontario

School Bus Double Fatal Collision Near Brampton Ontario

This OPP photo of the site of a school bus double-fatal collision just outside of Brampton Ontario could not be any less informative. The final rest positions of the SUV and school bus had to be located just outside of the right and left edges of this view, as if the...

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Cyclist Struck by London City Police Cruiser

Cyclist Struck by London City Police Cruiser

No photos are available relating to a collision between a London City Police cruiser and a cyclist that reportedly occurred on Thursday, December 7, 2023 on York Street near William Street in London, Ontario. In keeping with journalistic standards, this dated photo of...

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School Buses Have A Propensity To Wander

School Buses Have A Propensity To Wander

This photo recently posted by the OPP shows a school bus that wandered off the roadway and tipped over the steep embankment of a roadside ditch. School bus wandering is more common than in typical passenger cars. While school buses are generally safe for transporting...

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Red Hill Valley Judicial Inquiry Final Report Pending

Red Hill Valley Judicial Inquiry Final Report Pending

Will anything useful become resolved about the Red Hill Valley Parkway scandal when a final report from a Judicial Inquiry will become available this coming week? A technical report that was written ten years ago became missing and from this millions of dollars have...

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Collision Survival Needs Early “Deceleration”

Collision Survival Needs Early “Deceleration”

In a serious collision an important concept is that how and when your body makes contact with your vehicle interior is crucial to your survival. A key concept to understand in protection from collision injury is the idea of early "deceleration". Deceleration is placed...

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School Bus Tree Impact In Stratford Ontario

School Bus Tree Impact In Stratford Ontario

Collision severity is what causes injury and death. But how is that determined? Looking at damage alone can be deceptive. A school bus collided with a tree on John Street in Stratford, Ontario on the morning of Thursday, November 2, 2023. Photos of the collision such...

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Hydro-Vac Truck Fatal Rollover Trial Is Complicated

Hydro-Vac Truck Fatal Rollover Trial Is Complicated

This photo taken by the London Fire Department shows the Hydro-Vac truck that rolled onto a passenger vehicle at the intersection of Bradley Ave and Jackson Road in London, Ontario on January 6, 2021. A trial is underway alleging that the truck driver was driving...

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Latest Cycling Data From Colborne Street Traffic Study

Latest Cycling Data From Colborne Street Traffic Study

New data from the August 29, 2023 documentations on Colborne Street in London, Ontario shows that female riders and helmet wearing are far more common than in any other part of the City. Also the lateral paths of cyclists has changed. Analysis continuing. Partial...

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Highbury Ave Fatal Collision at Dingman Drive

Highbury Ave Fatal Collision at Dingman Drive

An unidentified bystander took this photo of the final rest position of a dump truck that collided with a pick-up truck at the intersection of Highbury Ave and Dingman Drive in south London, Ontario. The dump truck was travelling southbound on Highbury Ave and the...

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Multi-fatal Charter Bus Rollover near Harrisburg Pa

Multi-fatal Charter Bus Rollover near Harrisburg Pa

Travelling in a large charter bus on an expressway ought to be a very safe mode of transportation. The fact that, at times, it is dangerous is not because it should be but because we fail to learn from past disasters, preferring to keep the travelling public in the...

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E-Boards Travel Faster Than E-bikes – Is That A Problem?

E-Boards Travel Faster Than E-bikes – Is That A Problem?

What is the top speed of an e-board or e-scooter? Is it faster than the 32 km/h speed limit for an e-bike? Is that a safety problem? Gorski Consulting conducts substantial observations of cyclists riding on the streets of London Ontario. Cyclist speeds are not always...

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Details of Motor Vehicle Passing Motions of Cyclists

Details of Motor Vehicle Passing Motions of Cyclists

This view is of Premiere Project created to examine the details by which motor vehicles pass cyclists on Colborne St just north of St James St in London Ontario. The cyclist is shown here entering a 50-metre zone of markers which document details about the cyclist's...

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Gorski Down But Not Out

Gorski Down But Not Out

Unfortunate circumstances caused the lack of involvement by Gorski Consulting in the public participation meeting regarding the long-term use of Blackfriars Bridge in London, Ontario. However positive developments have taken place in other areas of study such as the...

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Officially-Invisible Cargo Carriers In London Ontario

Officially-Invisible Cargo Carriers In London Ontario

Not everyone can see them but, like Santa Claus, there are invisible cargo carriers out there. Some cannot see these cargo carriers because of simple things like darkness of night. But many do not see them because they chose to be blind to their presence. Much like...

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Building Collapse After Impact Complicates Cause of Death

Building Collapse After Impact Complicates Cause of Death

Readers may remember the article we posted on December 19, 2022 involving a building collapse in Boston. The building was struck by a car and we showed the photo below from Boston's Fire Department. In part we provided the following comment regarding interpretation of...

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School Bus Visibility Obstruction Could Kill You

School Bus Visibility Obstruction Could Kill You

In July of 2007 I posted an article on this (Gorski Consulting) website entitled "Roof Pillars Can Be A Visibility Obstruction". The point was to illustrate that a driver's view could be obstructed at an intersection by a roof pillar and this could lead to a...

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Bus Crash in Laval Points to Effects of Hysteria

Bus Crash in Laval Points to Effects of Hysteria

Large vehicles can be used as weapons by those with deranged intentions. However getting the facts right in determining whether an act was deliberate cannot be based on emotion and hysteria. Two children were killed and others injured when a transit bus veered into a...

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Death Should Not Occur From Simple Guardrail Impact

Death Should Not Occur From Simple Guardrail Impact

There was no explanation provided by the OPP as to how and why the passenger in this collision with a guardrail died and the driver sustained critical injuries. Guardrails exist to reduce the severity of injuries, not increase them. The poor quality of this photo...

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Multi-Fatal Rollover on Amiens Road West of London Ontario

Multi-Fatal Rollover on Amiens Road West of London Ontario

What was the status of the CNR crossing on Amiens Road and did it contribute to the multi-fatal loss-of-control on Thursday, December 22, 2022 The Ontario Provincial Police (OPP) have not released any photos of the collision site where at least 2 persons were killed...

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How Fast Was That Car Going?

How Fast Was That Car Going?

Often the public is incapable of interpreting collision evidence that leads them down an erroneous path. The internet is full of experts who use false information to confuse, and sometime defraud the public. The realm of collision analysis is no exception. A common...

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Drowning Risks Continue in Water-filled Ditch Rollovers

Drowning Risks Continue in Water-filled Ditch Rollovers

Fortunately the Ontario Provincial Police provided this photo of an upside down vehicle in a narrow ditch on Townsend Line in Lambton County. Otherwise we would not have the opportunity to explain the danger of such occurrences. At the risk of playing this broken...

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Cyclist Helmet Use in London Ontario

Cyclist Helmet Use in London Ontario

Observations made in London Ontario in the first half of 2022 indicate that more than half of cyclists riding on or next to roadways in the City do not wear helmets. This is an important finding considering the risk to injury that occurs when helmets are not used....

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Latest Scandal At City of Hamilton Really Smells

Latest Scandal At City of Hamilton Really Smells

The City of Hamilton is making many local area lawyers rich with investigations of its various scandals. Congratulations taxpayers of Hamilton, you have officially won another local scandal. The price? You will be paying perhaps $300 million dollars out of your...

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Cycling Issues In London Ontario – A Commentary

Cycling Issues In London Ontario – A Commentary

People have a right to believe what they will but I believe climate change is not some devilish hoax. As such important changes must be made to how our society functions. The need to reduce our carbon footprints must involve the recognition that our transportation...

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Has Road Safety in Ontario Been Deteriorating?

Has Road Safety in Ontario Been Deteriorating?

What is going on with injury and fatality causation in Ontario? Has there been a recent deterioration of road safety? How do we know? In the U.S. the National Highway Traffic Safety Administration (NHTSA) reported earlier this year that traffic fatalities likely...

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Colborne at St James Traffic Study Underway

Colborne at St James Traffic Study Underway

This is a view, taken on October 5, 2022, looking south along Colborne Street toward St James Street in London, Ontario. The video camera shown here is one of several that were positioned within a 130 metre distance to document the speed and volume of traffic on...

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Following The Chaos of A Detour – Part 3

Following The Chaos of A Detour – Part 3

The creation of a detour that involves cyclist traffic needs to take into consideration the typical behaviour of cyclists as well as their capabilities. This observation has been demonstrated in the creation of a detour around the construction at the Thames Valley...

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Following The Chaos of A Detour – Part 2

Following The Chaos of A Detour – Part 2

Gorski Consulting has been following the repercussions of a decision by the City of London Ontario to create a detour route around some construction that was being done on the Thames Valley Parkway (TVP) in an area just north-west of the downtown of the City. The TVP...

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Following The Chaos Of A Detour – Part 1

Following The Chaos Of A Detour – Part 1

When the City of London developed a detour around construction at the Thames Valley Parkway (TVP) unknown planners failed to understand how cyclists behave in their normal progression through their urban environment. The result is that several dangers were created...

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Judicial Inquiry into Red Hill Valley Parkway Continues

Judicial Inquiry into Red Hill Valley Parkway Continues

This view of the Red Hill Valley Parkway in Hamilton Ontario was taken in September, 2020, at a time when its posted maximum speed was reduced to 80 km/h. Officials believed this was necessitated due to the perceived safety problems that became reported over several...

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Is A Cyclist Travelling 26 km/h Speeding?

Is A Cyclist Travelling 26 km/h Speeding?

Interactions between cyclists and other users along multi-use paths inevitably cause concerns when the paths are not designed with sufficient safeguards to allow safe and unobstructed passage. Situations in High Park in Toronto, Ontario have seen a recent elevated...

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Blackfriars Bridge Traffic Study – Session #4 Results

Blackfriars Bridge Traffic Study – Session #4 Results

The Phantom of Blackfriars Bridge appeared to have some competition during Session #4 of the Blackfriars Bridge Traffic Study (BBTS) on July 18, 2022 as a new climber of the bridge was spotted on the structure. Session #4 of the Blackfriars Bridge Traffic Study (BBTS)...

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Blackfriars Bridge Traffic Study – Session #3 Results

Blackfriars Bridge Traffic Study – Session #3 Results

Results from Session #3 of the Blackfriars Bridge Traffic Study (BBTS) have now been completed with respect to motor vehicle, cyclist and pedestrians volumes. Documentation in Session #3 occurred between 0648 and 0848 hours. Overall fewer observations were made in...

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Blackfriars Bridge Traffic Study Session #3 Completed

Blackfriars Bridge Traffic Study Session #3 Completed

Session #3 of the Blackfriars Bridge Traffic Study (BBTS) was completed this morning, July 6, 2022, between 0700 and 0900 hours. This data will be revealing as it comes from the morning peak (rush) hours in the middle of a work week. We are now in the process of...

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Gorski Consulting Involved in Annual Velo Cyclist Counts

Gorski Consulting Involved in Annual Velo Cyclist Counts

As per last year's involvement, Gorski Consulting participated in Velo Canada's cyclist counts that took place throughout Canada between June 7 and June 12, 2022. We volunteered to conduct observations between 0700 and 0900 hours along Dundas Street just west of...

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Blackfriars Bridge Traffic Study – Session #2 Completed

Blackfriars Bridge Traffic Study – Session #2 Completed

Session #2 of the Blackfriars Bridge Traffic Study was completed on Friday, June 17, 2022 between 1530 and 1800 hours. The video from 10 cameras will be copied and assembled into projects on the Adobe Premiere editting software, followed by further analysis. It will...

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The Phantom of Blackfriars Bridge

The Phantom of Blackfriars Bridge

Who is the mysterious creature who walks over top of the historical Blackfriars Bridge in London Ontario? While completing our Session #2 of videotaping at the Blackfriars Bridge a mysterious climber emerged, walking the trusses of the bridge like he was taking a...

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Blackfriars Bridge Study Postponed Due to Weather

Blackfriars Bridge Study Postponed Due to Weather

Thursday, May 26, 2022 was planned to be the day when official observations of traffic were to be conducted by Gorski Consulting at the site of the Blackfriars bridge in London, Ontario. Unfortunately weather forecasts kept predicting that the day would be washed out....

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Dangerous Police Traffic Stop Standing in Live Lane

Dangerous Police Traffic Stop Standing in Live Lane

A police force posted a photo (shown above) of one of its officers who stopped a speeding vehicle at an undisclosed location outside of Toronto, Ontario. The officer is seen standing in a live lane while at the driver's window of the offender's vehicle. The scenario...

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Not Enough Radicalization & Intolerance?

Not Enough Radicalization & Intolerance?

Recently Gorski Consulting attempted to convey an important safety message to cyclists  with a short Twitt. This was based on the results of real-life collisions that were reconstructed by Gorski Consulting. What resulted was an angry response from many who decided...

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Red Hill Valley Parkway Inquiry – The Secrecy Continues?

Red Hill Valley Parkway Inquiry – The Secrecy Continues?

After two years of silence the Red Hill Valley Parkway (RHVP) Inquiry has recommenced with an attempt by the City of Hamilton to keep back certain documents. No one will know what those documents are because the decision to withhold will be made "in camera" or behind...

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Cyclists Riding on Sidewalks In London Ontario

Cyclists Riding on Sidewalks In London Ontario

Why do so many cyclists chose to ride on a sidewalk rather than on the road where they are legally required? That is one of the questions we need to answer if we are to improve cycling efficiency and safety in the Province of Ontario. Gorski Consulting has been...

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Additions to Road Data Webpage of Gorski Consulting Site

Additions to Road Data Webpage of Gorski Consulting Site

The Road Data webpage has been updated on the Gorski Consulting website to explain additional testing that has been conducted in recent years. As a result of an unexplained hacking of the Gorski Consulting website in early January, 2022 we have removed our hosting...

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Happy Trails My Friend – To Our Hikers & Bikers

Happy Trails My Friend – To Our Hikers & Bikers

Happy trails my friends. For you bikers, we appreciate that spring has sprung but 2 inches of morning snow in London has us searching for our snowshoes. In the meantime remember what lies ahead in this upcoming season. May you have a safe, relaxed and healthy season....

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Unreported & Unexplained Fatality on Hwy 7 in Vaughan

Unreported & Unexplained Fatality on Hwy 7 in Vaughan

Those who appreciate the importance of reducing injury and death on our roads must understand that hiding the causes will not help in achieving reductions in those injuries and deaths. An example of the problem is the display on Twitter of the above photo in a York...

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No Apparent Improvements To CAA’s Worst Roads Campaign?

No Apparent Improvements To CAA’s Worst Roads Campaign?

  Receiving annual publicity from almost all news media outlets in Ontario, the CAA's Worst Roads campaign continues to gather subjective complaints from citizens as to what they perceive as the worst road in their area. Annually the 10 worst roads are determined...

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Springtime Cycling – The Challenges Continue

Springtime Cycling – The Challenges Continue

Much like general roadway maintenance, the maintenance of cycling paths, trails and tracks is needed on a constant basis. Many cities like London have reduced their roadway inspections over the years, especially with the advent of the Municipal Act and the so called...

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How Many Persons Died From Post-Impact Fire in Texas?

How Many Persons Died From Post-Impact Fire in Texas?

The elephant in the room is being ignored again. No sooner did I finish posting an article on the tragic death of a young female driver in a post-collision fire on Highbury Ave near London, Ontario, then another fire in Texas occurred, without any official explanation...

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Gorski Slowly Returning To Active Duty

Gorski Slowly Returning To Active Duty

  Not only was the Gorski Consulting website recently hacked but regrettably I was informed that I would need surgery. This occurred last week and I am slowly recovering. I've had some thoughts in passing. Many years have passed by in the wink of an eye much like...

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About

Zygmunt Gorski has been involved in the analysis of motor vehicle accidents since 1980.  Initially employed as an accident investigator with the University of Western Ontario Multi-Disciplinary Accident Research Team (1980-90), Gorski then worked as an Accident Reconstruction Consultant with a forensic engineering firm in Kitchener and Toronto (1990-95), before opening his own consulting business in 1995 which he continues to operate to this day. Although Gorski’s interest has always focused on the physical evidence resulting from motor vehicle collisions, he has been involved in a variety of analyses ranging from injury assessments in his earlier times to the use of multiple video cameras and roadway safety issues in more recent years.

…download CV and Court Experience for Zygmunt Gorski

Contact

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Gorski Consulting
361 Hale Street
London, ON
N5W 1G5
P: 519.453.2773
F: 519.457.1730