(Men in Black Box)
According to a research by the Road Traffic Authority,
1 out of 2 drivers do not turn on...
their turn signals when changing lanes.
This means there are many drivers who do not follow...
the basic safety regulations.
When changing directions while driving,
the habit of turning on the signal light...
can prevent big accidents.
Please remember it.
This person never imagined such an accident to happen.
Their car suddenly speeds up while turning right...
and runs into a building's wall.
What could have happened?
I was turning right...
from a big road to a smaller road.
There was a truck coming out.
My brakes weren't working,
and my car kept on charging.
In order to dodge the truck, I turned my handle to the right.
Luckily, the car stopped after breaking down a wall.
However, the car starts to make loud, roaring sounds.
The sound...
got louder after 30 or 40 seconds.
Meanwhile, there was smoke coming out from the car.
I believe it was a sudden, unintended acceleration.
The loud roar after the crash...
made the driver suspect an SUA.
What will an expert think about this accident?
An SUA is when a car charges...
regardless of the driver's will.
When a car suddenly accelerates...
with a loud engine sound, this is an SUA.
The crash led to an alteration of the vehicle,
and that's when it roared. It didn't make sounds from the start.
That's why this is not an SUA.
If you listen carefully to the car before and after the accident...
(The roaring sound should be noticeable beforehand.)
There are no loud sounds prior to the crash.
(Sound after the accident)
After the accident,
the loud roar starts in about 10 seconds later.
Experts say this video alone isn't enough...
for us to see this as an SUA.
If your car ever charges suddenly,
crash into a wall nearby...
in order to stop your car. Then you can ask an expert...
to see if there are any defects.
The unexpected happened to this driver.
The road looks peaceful at first.
Something suddenly flies toward the car and damages it.
At the moment, I thought I would die. Everything went black.
I narrowly escaped death. It just hit my ear.
The informer's ear cartilage was hurt because of it.
What could have flown in?
It was like a steel beam. The car ahead...
noticed it and was startled.
That's why they moved a little to the right...
and stepped...
on the end of the beam.
There was no time to dodge this steel beam...
that likely fell off from a truck.
The steel beam that flew over while rotating...
penetrated through the windshield.
The repairs cost him 3,000 dollars.
It wasn't just the windshield that was damaged.
The rear window was broken too.
The steel beam that went through the windshield...
grazed the informer's ear...
and went out through the rear window.
It was a very dangerous situation.
However, he was very lucky.
At the time of the accident,
this baby was right behind me. It could've been really dangerous.
Even a few millimeters...
could have killed me.
I was spared so that I could stay with the twins.
Neglected, fallen objects are very threatening to drivers.
Respective road management should check on road conditions...
on a regular basis in order to reduce such accidents.
(Close-up)
It didn't look like anything would happen on this road.
Keep your eyes on this car.
The truck ahead suddenly changes directions,
then it runs into the traffic barrier.
It even capsizes right after the crash.
What could have happened?
I noticed that the truck was moving strangely.
Just before the accident,
the truck was originally in the right lane.
Then it zigzagged back and forth...
before crashing into the barrier and flipping over.
Why did the truck lose its balance...
and end up in an accident?
They told me they heard a bang as if the tire had popped.
When a tire rips,
the air will seep out. Then the car will start tottering.
The tire near the driver's seat had ripped.
Were there anything on the road...
that damaged the truck's tire?
You can see large movements...
starting from just below the digital signage.
The problematic part is the tire...
right underneath the driver's seat.
We configured a three-dimensional space...
by using the vanishing point.
If you overlap it with the video,
the coordinates in which the truck moved...
and the pattern where the hole is...
match.
That's why it's highly likely...
that the truck stepped on this...
on its way.
Let's take a good look at the black box footage.
This mark on the road could have caused the accident.
We went to check the accident site in person.
The problematic mark was something we call a landmine on the road.
It was a pothole.
It looks like the tire ripped after stepping on this pothole.
You can find potholes quite often on roads.
Let's take a look at the dangers they have.
This informer is driving on a rainy road.
Then...
It sounds like something popped.
What could have happened?
The tire warning light came on after the bang.
I couldn't control the steering wheel like how I normally could,
so I pulled the car to the side.
When I checked, I saw that the tire had popped.
The tire was just fine earlier.
Why did it pop all of a sudden?
It was bigger than I had originally thought.
It was around this big.
It was due to a pothole on the road.
Let's take a look at the black box footage again.
There was a huge pothole on the road.
However, that wasn't the only problem.
I thought I was the only one who got into the accident.
However, there was already another car in front me,
another driver who was victimized...
and shared their contact with me,
and there was the last victim car.
There were a total of four cars that got into accidents...
due to this pothole on the same day.
We went back to the accident site with another victim.
The moment I drove over it, the steering wheel...
started to wobble. The tire went flat.
The accident happened while his whole family was in the car,
so he felt very threatened.
In the end, he had to get his wheel replaced.
- Which one did you step on? - This.
I think they had it patched up.
In order to avoid further damages, the victim decided...
to report the problem to the road management authority.
The pothole was fixed,
but it still looks dangerous.
However, why couldn't the informer...
just dodge such a huge pothole?
I didn't notice it.
I didn't see it. By the time I got close,
it was too late. I didn't have time to dodge it.
Potholes are holes...
that sink from the surface of the road in the shape of pots.
Potholes are very threatening to drivers.
We decided to check how dangerous they were through an experiment.
We did a test while driving over it at 60km per hour.
The moment the car fell into it, there was a huge shock,
and the steering wheel also turned.
It was hard to maintain the direction.
The outer part of the tire was damaged.
If you crash into a pothole, the strong impact...
can damage your tire, wheels, and other parts.
This could lead to an accident.
As the car becomes momentarily unstable,
cars like SUVs and trucks could flip over.
However, something else can give you a headache.
It's the process of taking care of the accident afterward.
This is a video we received by an informer.
There is a show called Men in Black Box on SBS.
I intend on reporting this to them.
This informer shares car information through videos online.
I was so surprised.
I thought the car was damaged in addition to the flat tire.
The impact was quite severe.
At the time, the informer was driving on an expressway.
However...
His tire pops all of a sudden.
(The accident happened so suddenly.)
It was another pothole that caused this accident.
Right after the accident, the informer got out of the car...
to take pictures of the pothole, the flat tire,
and everything else related to the accident.
There is a reason why he did this.
It happened last September.
I was on my way back home.
This wasn't his first pothole accident.
His car is rattling out of nowhere.
Then you can hear the sound of air escaping.
The sound came from the informer's ripped tire.
It wasn't something you could avoid.
You couldn't avoid getting a flat tire.
It was his first pothole accident.
At the time, he took many pictures,
and they became helpful when it came to receiving compensation.
I got around 2,000 dollars.
How can you get properly compensated...
for a pothole accident?
Take as many pictures of the accident site as possible.
Keep a copy of your black box footage...
so that you don't lose it.
Collect as many materials as possible...
so they can become helpful...
when you need to show evidence. It's the most important thing.
With the evidence you've collected,
the local government will estimate the responsibility ratio...
and provide the compensation.
However, such accidents wouldn't have happened...
if there were no potholes.
Is there no way to stop potholes from forming?
Our country has four seasons.
If it rains a lot,
there's no way to stop potholes from forming.
Older roads and worn out surfaces...
are more vulnerable to potholes.
In conclusion, we can't stop potholes from forming.
The fastest way to reduce the number of pothole accidents...
is to repair the road as soon as a pothole forms.
If you ever come across a pothole,
don't just pass by it...
and make sure to send in a report.