The Kodsi Post is our blog, featuring useful and informative articles written by our very own experts.
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To deploy or not to deploy? That is the question…

We are often asked to explain why the airbags did or didn’t deploy in a particular collision. Many people have a misconception that airbags will or should “go off” if the vehicle was travelling faster than a certain speed. But travel speed is not a key factor for... read more

Black Box Lunch and Learn Video Highlights

Kodsi Forensic Engineering’s Technical Director, Shady Attalla, P.Eng., brought participants up to speed on “black box” (EDR) basics, the latest advancements, and the EDRs of the future as the “safety brains” of driverless cars at yesterday’s Lunch & Learn.... read more

Reconstructing Night-time Visibility

Pedestrian fatalities account for approximately 15% of all motor vehicle accident related deaths, and more than half occur at night when visibility is reduced. So, when we as accident reconstructionists are asked to determine whether a typical driver could have... read more

Our Team Is Growing: Meet Our New Talent!

We are pleased to announce that there are some new faces around our office as we grow and further diversify our technical team. Biomechanist Avery Chakravarty, M.A.Sc., has trail-blazed new testing methodologies in injury biomechanics and brings with her the latest... read more

Winner Announcement for the Blog Topic Contest!

Thank you to all who submitted blog topic suggestions for our experts to write about in future posts! Your submissions help our forensic engineering experts write educational content that is useful to you and your peers in the insurance and legal industries. Many of... read more

The Driver in Question: Who was really driving?

Sometimes after a collision has occurred, there is an uncertainty around who was actually driving at the time of the crash. We call this, as you probably do too, the “Who was driving?” scenario. The “Who was driving?” scenario arises when: No one admits to being the... read more

The Kodsi Post Blog Topic Contest – Extended!

  We pride ourselves on writing educational content that is useful to you, so we want your feedback! Take two minutes to tell us what you would like our experts to write about, and you will be entered into a draw to win a $200 gift card to anywhere you choose.... read more

Using Video Evidence in Accident Reconstruction

  We love objective evidence. When forensic experts get video footage related to a collision or incident, it’s like Christmas came early for us. Photos of the incident scene with the vehicles still in their final rest positions are like that sweater from your... read more

“Black Box” Quick Info Sheet

Need a refresher on vehicle “black box” basics? Check out our handy one-page summary on automotive black boxes on our website. You can view or download a PDF copy to share with your colleagues, or print a copy and keep one at your desk. View and Download... read more

Post-Crash Questions for Statements & Discoveries

We have refreshed our list of questions to ask drivers and passengers when taking statements or conducting examinations under oath. This handy and organized one-page document will help you gather all applicable details about the collision. The information you collect... read more

Welcome Senior Reconstructionist Russ Heslop!

We are pleased and excited to announce the addition of Mr. Russ Heslop to our team of experts!  This is the first time at Kodsi Engineering that we have integrated a Senior Accident Reconstructionist with such an extensive law enforcement background into our team.... read more

“Bracing” for The Future of Injury Biomechanics

With the increasing autonomous capabilities of vehicles, and with fully driverless cars just on the horizon, many automotive manufacturers are promising a future with fewer traffic fatalities and serious injuries. Although the types of crashes we see most often will... read more

Was the Black Box wrong? A Case Study

The “black box” is often regarded as the Holy Grail of evidence when investigating a crash. But is the black box always right? The following case study demonstrates the importance of examining black box data with an underlying knowledge of its limitations, and always... read more

Forget Hot-wiring: Investigating Modern-Day Vehicle Theft

We’ve all seen movies from the 90’s where a thief would strip back a couple of wires under the dash of a vehicle and connect them to start the car without a key and drive away. But that technique (called “hot-wiring”) is useless on most vehicles built since the mid to... read more

The Art and Science of Photogrammetry

Measurements of scene evidence or vehicle damage are often used in forensic analysis and reconstruction because many of the calculations used to answer questions depend on these measurements. One of the techniques experts use to accurately measure evidence such as... read more

Measuring Slip Resistance

When investigating a slip and fall incident, our forensic experts are often asked to comment on how slippery a surface would have been under certain conditions and whether a typical person would have slipped in that situation. In order to answer these two questions,... read more

Crash Conference 3 Highlights

All of us at Kodsi Forensic Engineering would like to extend our sincerest thanks to all attendees who participated in our conference and helped make it our best Crash Conference to date! We have compiled a very short video to share some of the highlights of the day... read more

WREX 2016

Our senior crash reconstruction engineers, Sam Kodsi and Shady Attalla, are spending this week studying a dozen unique crash tests and attending seminars at the world’s largest crash reconstruction conference – WREX 2016!  The crash test lineup at WREX has... read more

Crash Testing Science: Why Do We Crash?

Vehicle collisions occur every day in every imaginable combination of vehicle type, speed, angle, and a plethora of other factors. Studying the physics of all sorts of collisions is important for a number of reasons, the foremost of which are to improve vehicle safety... read more

Crash Conference 3 Teaser Video

We are counting down the days to our third Crash Conference! Watch the video below for a sneak peek at what we have in store for conference attendees this year! Still need to get your tickets? Click here to register for the Crash Conference online.... read more

Headlight Technologies & Accident Reconstruction

Have you ever driven down a roadway at night and looked into your rear-view mirror, only to be blasted by the super bright headlights of the vehicle behind you? If you have, you already know first-hand of one of the downsides of advanced headlight technology: having... read more

View Engineering Simulations of a Head-on Collision

Forensic engineering simulations are one of the many tools our experts utilize to refine their understanding of a collision or vehicle dynamics. When created by professional experts with intimate knowledge of the complex, physics-based accident-reconstruction... read more

Left or Right? How to Pass Safely

  When we need to get somewhere, there is nothing more frustrating than being stuck behind a slower car ahead on the highway! Luckily, the transportation engineers who designed our roads were annoyed by that as well, so they have given us some options to get... read more

The Evolution of Automotive Safety Systems

Automotive safety systems have evolved tremendously considering that the humble seatbelt wasn’t even mandatory in new North American vehicles until 1968, 13 years after it was first made available as an option (see “The Seatbelt Turns 60” for more on... read more

Registration is open Crash Conference 3!

Join us on Thursday, May 12, 2016 for Crash Conference 3! Registration is now open! Our interactive conference features live, human-subject crash tests, affording you the unique occasion to witness what happens during collisions. Learn about vehicle crash dynamics,... read more

Save the Date for our 2016 Crash Conference!

We are crashing for research again! Our 3rd Crash Conference will be held on May 12, 2016 in Mississauga, Ontario. Don’t miss the chance to attend the only crash conference in Ontario where insurance, legal, and other professionals can observe human subject... read more

Commercial Vehicle Hacking: The New Hacking Frontier?

Reports about vehicle hacking have become more common in recent months, but while consumers worry about their own vehicles being targeted, the owners and insurers of commercial vehicles may actually have the most to lose. Why are commercial vehicles especially at... read more

The Effect of Age on Slip, Trip, and Falls

  Walking is an essential motor skill used during the activities of daily life. There are factors that can affect an individuals’ stability during locomotion and should be considered when determining the risk and probability of sustaining an injury due to a slip,... read more

The Seatbelt Turns 60: An Interview with Sam Kodsi

  Sam Kodsi is a Consulting Professional Engineer and the President of Kodsi Forensic Engineering. Sam worked in seatbelt component manufacturing before shifting gears and becoming an expert in forensic engineering, crash reconstruction, injury biomechanics, and... read more

The Volatility of Black Box Data

In our last newsletter (winter 2015), we wrote about the importance of preserving black box data early in the claims process. The reason it is so critical to obtain black box data as soon as possible is because in some vehicles the data can be erased over time,... read more

The Evolution of the “Black Box”

The Event Data Recorder (EDR) or “black box” provides our experts with a powerful tool, allowing us to reconstruct the events of a collision in greater detail, with higher accuracy, and with more precision than ever before. These black box modules began appearing in... read more

How a Properly Worn Seatbelt Does its Job

Correctly worn seat belts help to contain occupants in their seats and allow most of the collision forces associated with a rapidly decelerating vehicle to be applied across the chest and pelvis. A properly fitted shoulder belt should lie securely across the center of... read more

Cheap Insurance for Insurers

Have you ever found yourself wishing you had that important piece of scene evidence or the black box data from a vehicle which is no longer available?  The evidence related to a claim becomes vulnerable right after the incident happens, and without proactively making... read more

Lane Change Collisions and Blind Spot Assessment

Changing lanes can be one of the riskiest driving manoeuvres that a driver performs; lane change collisions account for about 4 to 10 percent of all automotive crashes. Research suggests that most involved drivers were unaware of the presence of the other vehicle. ... read more

Working with our Clients

In an effort to facilitate our interaction with you, our clients, as well as to provide useful information on how we carry out our professional duties as experts, we have compiled a handy Customer Information Package. This package, also offered in a printed booklet... read more

Motorcycle Myths and Facts

With riding season upon us, we thought this would be an excellent time to debunk a few common myths about motorcycles. MYTH: motorcycles do not have black boxes Some motorcycles do have event data recorders similar to those found in passenger vehicles.  Some... read more

Watch your feet on vacation!

In Canada, there are standards and guidelines for walkways and roadways to promote pedestrian and motorist safety. Unfortunately, many counties do not have the same standards for walkway discontinuities, potholes, and other hazards that lead to trips, slips, and... read more

The Amber Signal Conundrum

As you approach an intersection facing a green traffic signal, you sometimes find yourself in an awkward position when the traffic signal changes to amber, and you need to make a choice about whether you should firmly apply your brakes and stop, or continue through... read more

Welcome Andrew Northmore!

Bringing More Civil Engineering Expertise to our Team We are happy to announce the addition of Andrew Northmore to our technical team. With an undergraduate degree in mechanical engineering and a masters degree in civil engineering (including years of research on... read more

Give Your Neck a Chance

How to Properly Position Your Head Restraint   Neck injuries in rear end collisions are extremely common and account for billions of dollars in insurance claims every year.  Where your seatbelt restricts the forward motion of your body relative to the vehicle in... read more

Why the 2-second following rule?

Imagine you are driving down a highway and the driver in the vehicle ahead suddenly slams on their brakes. Your vehicle should be able to decelerate about as rapidly if you also slam on your brakes. However, when it comes to responding to a road hazard, it takes some... read more

Hydroplaning 101: Driving Safely in Spring Showers

Spring showers may be a welcome change from the harsh cold and road slush. Unfortunately, your vehicle is susceptible to encountering unusually high water levels on the road during this season. When one or more tires on a vehicle actually loses contact with the road... read more

We Crash for Research! 21 Days left for Early Bird Pricing

If you investigate, adjust, litigate, or otherwise handle a claim, you should come to our Crash Test Conference on May 29th in Mississauga. Our interactive conference gives you and your team the unique occasion to witness what happens during a crash and interact with... read more

Walking the Walk

Imagine yourself walking along a sidewalk by yourself on a nice sunny day. Now imagine yourself jaywalking across a busy wet street during a rainstorm. In each of these two scenarios, you most likely pictured yourself moving at different speeds. Pedestrian speed is a... read more

Message from the President: When in Doubt, Go Forensic!

Every day, our forensic experts are presented with scenarios that may seem simple on the surface. However, complexities often lie under the cover. The analysis of physical evidence and eyewitness accounts using applied science and research allows our experts... read more

Get A Grip: The Importance of Winter Tires

Tires are the most significant safety equipment on vehicles; they are the only part of our cars, vans, trucks, and SUVs that touch the road, and they transfer all driving forces. Yet, with the exception of Québec which has mandatory winter tire legislation, only about... read more

KEI’s 1st Crash Test Conference

The staff at KEI would like to extend a big thank you to all attendees for making our first Crash Test Conference a huge success! The conference was held on May 31st in Mississauga where nearly one hundred and fifty professionals in the legal, insurance, and law... read more

Filling in the Gaps in Pedestrian Speed Research

Even though most pedestrians struck by vehicles are mid-block jaywalking, the vast majority of research only measures pedestrian speeds within controlled environments such as sidewalks or crosswalks. Picking up on this serious disparity, KEI engineers conducted a... read more

KEI Engineers Attend the ARC-CSI Crash Test Conference

KEI engineers Shady Attalla and Karla Cassidy travelled to Las Vegas in June 2012 to attend the ARC-CSI Crash Test Conference. They observed seven different crash tests, some of which involved multiple impacts between multiple vehicles.  “Seeing the collisions... read more

Did You Know….?

A lot of collisions happen when people are rushing to get home.  Transport Canada’s National Collision Database included information from about 1.5 million collisions that occurred across Canada between 1999 and 2008. The hours between 3 and 6 pm had the highest... read more

When Do Airbags Deploy?

Now there’s a tricky question. There is no single answer as to when an airbag should or should not deploy. Nor is there a magic collision speed that sets off airbags. Certainly not all types of crashes will result in airbag deployment, and airbags may not necessarily... read more

Driver Acceleration Behaviour Research

Even though most intersection crashes involve two-way stop controlled intersections, most research investigated vehicle acceleration profiles within controlled environments such as traffic signal controlled intersections. A prerequisite for the determination of crash... read more
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