crash scene police investigation must be thorough when lives are lost - best distance measuring device

Today is 7: 38 Thursday, June 14. m.
Life will change forever.
A truck left from Adelaide StreetW.
On pedestrians crossing Brant StThe 30-year-
The old woman will lose her life in the hospital. The 46-year-
The old truck driver was not injured but was shocked.
"I didn't see her.
I didn't see her, "he told a construction worker shortly after the accident.
Soon the investigation began, and the driver wept in the arms of a woman a few steps from the scene.
She glanced at a reporter and warned him not to leave.
The collision during the morning rush hour means the investigation will have to close Adelaide Street. , a major east-
The westward artery enters the heart of the city for up to four hours.
Vehicles were diverted and pedestrians were frustrated and confused as they tried to stroll through police footage.
This is not a complex investigation, the scene of the accident is included in the intersection.
Some may wonder why a major road is closed for such a long time. Staff Sgt.
Gary McBratney always hears complaints like this.
While he appreciated the driver's frustration, he also saw the other side of the problem.
He's in charge on the 16 th.
Based on Hanna Ave, a member rebuilding team working with transportation services.
North of the exhibition site
The team is only called a collision involving death or life-
Threatened to get hurt.
"This is the life of human beings.
We must show some respect for the loss of life, "McBratney said firmly in an interview sitting on a table in the conference room.
"When the streets are closed for killing, why not bother people?
The same thing when someone dies in a collision.
We must conduct the same thorough investigation.
"There are several reasons why the roads are not cleared as quickly as some would like.
On the one hand, the legal agreement requires a detailed search of the evidence, and no two collisions are the same.
Investigators do not want to give any chance on this day.
The family of the dead woman will want the answer.
Insurance companies need answers.
At this early stage, investigators must be prepared for possible criminal cases or civil proceedings.
That's why the smallest detail has to be checked.
Once the hospital informed the police that the woman was living
In the case of threats, a layered police response occurred.
The reconstruction team just arrived at 8: 00. m.
When investigators talk to witnesses and officials, they go to the hospital to check the identity of the victim and contact close relatives. Sgt.
Larry Zimmerman was responsible for the scene.
Once the fire department comes to wash the blood away, he will be the one to open the road.
During these four hours, police photographer Paul Thompson will take hundreds of live photos from close quarters and beyond, taking 360 photos
Degree snapshot of intersection.
As the main station of the measuring equipment, the site will be collected.
The police will use a sled to measure the degree of slippage on the road, while the police will canvass nearby to watch the video to see if this helps determine how fast the truck is driving.
There was no slip mark, indicating that the truck did not brake before hitting the woman.
Chalk marks near the truck point out the location of some clothes and TTC passes. Det. Const.
Janice Woronchak uses fingerprint powder to lift the marks from the left front of the truck and check where the contact points are.
After her work was completed, the marks and skin tissue that could not be detected by the naked eye stood out, and the photographer leaned over to take more photos.
Team leader, Det. Const.
Courtney Jurkin supervises the work
She will consult an expert to see if the traffic signal works.
After three hours of investigation, the truck was thoroughly checked to see if the signal and brakes were working properly.
The group does not have a legal mandate to remove the truck for inspection elsewhere, so roads must be closed when checking the truck.
It lasts about 45 minutes.
At last, Zimmerman opened at noon.
This was identified as easier than many other surveys, since only one vehicle was involved.
In many other investigations, several vehicles were involved in the crash site.
McBratney described the operation at the scene of the accident as "fluid" and at the same time many things happened.
McBratney took a piece of paper and drew a line in the middle.
On the one hand, he wrote a title: "killing people.
On the other side: "Traffic.
Under each heading, he wrote a parallel list showing similarities between homicide and traffic death investigations.
There is a criminal investigation bureau for killing people, and there is the same traffic.
"They have forensic doctors, we have investigators (
Reconstruction Unit).
They go to court, we go to court.
They deal with the victims, we deal with the victims.
"McBratney disagrees with the statement that road clearance was not fast enough in the death investigation.
"I think what people have to understand is that we are aware of opening the road as soon as possible, but we do have work to do.
If we're going to do a criminal investigation, I have to find out all my evidence.
I can't say that I missed this because I didn't want the road closed.
Toronto traffic services handles life issues
Threats and deadly collisions throughout the city.
Four of mcblatney.
The official rebuilding team, one of the four, will be called once it is determined that someone is dead or has a life --
Threatening injuries
This may mean waiting for emergency room doctors to deal with the most urgent needs of accident victims.
The team usually arrives within an hour after a major accident.
McBratney reached out again to take the pen and drew four quadrants on a piece of paper representing a crossroads.
He drew the outline of two holes.
Finally the car in the northeast quadrant.
"In which direction do they go?
He asked the reporter who was not a major in physics.
A few seconds passed before he answered his question.
"One car must go north and the other must go east.
It's a good indicator that they end up in the northeast quadrant.
McBratney explained the collision like a science teacher in grade 12.
"This is basic high school physics," he explained . ".
"These are three laws of Newton.
I think this is the basis of our work.
Newton's first law: Everything at rest stays at rest, and everything in motion stays in motion unless it is subjected to unbalanced external forces.
"Time, distance, speed.
McBratney said that's what his team did.
He likes this certainty.
"The reason I entered this field is because you can't argue with physics.
If you tell me the truth, physics will support it.
The driver drove a test car speeding near the parking lot and the car turned sharply.
The tires began to squeak, and the car entered the so-called horizontal pendulum. a spin.
The class measures tire marks to confirm the speed at which the vehicle is traveling. Sgt.
Stephen o'donoven and DettConst.
Nick Bokalo uses diagnostic and sensing devices that measure the degree of road slippage, such as a sledge, as well as an ArbCom device to calibrate acceleration.
The transportation service has two reconstruction trucks with electronic measuring devices and a flat tractor.
Trailer covering the whole city.
In the event of a collision at the north end of the city, the team must go there from Hannah Avenue.
Through traffic like everyone else.
The scout team will not reopen the road until they collect all the best possible evidence.
They only have one chance.
"We're not talking about a $50 crash," McBratney said . ".
At least two officials were involved in taking photos before the collision, measuring tire marks, taking into account the drag factor and determining the weight and speed of the vehicle.
Place traffic cones and chalk as evidence marks. The old-
Old-fashioned tape measure is no longer needed.
One of the most important tools for the team is the switchboard, an electronic distance-
Looks like something the surveyor uses.
It drew a site map legally, and the production date was later used to make computer drawings and exhibits that could be used in court.
The last thing police investigators want is for defense lawyers to find flaws in their work.
Hundreds of intersections across the city have been mapped by forensic doctors so that the next time a collision occurs in one of the places, there is no need to map again.
The weather will also affect the speed at which roads are reopened.
For example, in the winter, if the fire department had to hose on the road, a road worker had to come in and salt it.
If a car takes out a light pole, Toronto Hydro needs to be repaired.
After the completion, the site supervisor will give all-
It is clear that the road is reopened.
McBratney said it would take more than four hours to clear a major collision, which is rare.
"I don't think it's shocking," he said . "
Sometimes, new technologies can speed up, such as a huge airbag used when a grain-laden transport truck overturned on Highway 401 back in October.
Bill and son traction general manager Steve Steele arrived at the scene with an orange bag that was inserted under the truck after the trailer support end and then inflated.
The truck turned over at 3: 30 in the morning. m.
The highway was cleared before the morning rush hour.
"This may save two hours of closure on the highway," OPP Sgt said . ".
Dave Woodford talked about airbag technology.
The technology has been around for a while, but Steele says traction is reluctant to invest in equipment and training.
This is the second time Steele has used airbags on the GTA highway.
As the trailer company was contracted by the trucking company for cleaning and recycling, OPP could not force them to invest in airbags.
Using the files in kitThese, a tool for Noor JavedReconstruction team, the rebuilding team uses these device options for forensic examination of collision scenarios: collision data retrieval toolkit: hardware and software for accessing pre-collisions
Collision and collision information that may be stored in the vehicle.
Terminal: an electronic/optical instrument for forensic mapping of road layout and evidence found at the crash site.
Crash Zone software: a program for drawing charts from data collected on site, suitable for court presentations.
ArbCom: Provides an accelerometer for brake testing and acceleration or performance testing.
The equipment collects data on roads and vehicles.
Sled: Concrete
The filled tire is used together with the scale to determine how slippery the road is, called the coefficient of resistance.