Speeding Porsche with no plates involved in horror N11 crash

Pitbull

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Again - crumple zones. There is a reason car manufacturers spend billions on R&D on safety.

Crumple zones means fark all in effect of a head-on with another vehicle. The same crumple zones in effect against a stationary pillar as an example (with reference to the vehicle), will apply to the head-on on the other vehicle. It makes no difference be it a wall or another vehicle.

Your reasoning is that you have crumples zones x2 which would reduce the impact. Which it doesn't the reduction stays the same per vehicle and does not mitigate anything just because it's x2. Inertia will be similar to both vehicles, and crumple zones will apply to one specific vehicle only for those occupants.

If that makes any sense.

Think of it this way, having two vehicles hitting opposite sides of a stationary pillar at the same time. The crumple zones only affect those in that specific vehicle. At certain point, crumple zones are gone and pure force applied to the occupants. Makes no difference if they hit each other or a pillar.
 

Splinter

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Crumple zones means fark all in effect of a head-on with another vehicle. The same crumple zones in effect against a stationary pillar as an example (with reference to the vehicle), will apply to the head-on on the other vehicle. It makes no difference be it a wall or another vehicle.

Your reasoning is that you have crumples zones x2 which would reduce the impact. Which it doesn't the reduction stays the same per vehicle and does not mitigate anything just because it's x2. Inertia will be similar to both vehicles, and crumple zones will apply to one specific vehicle only for those occupants.

If that makes any sense.

Think of it this way, having two vehicles hitting opposite sides of a stationary pillar at the same time. The crumple zones only affect those in that specific vehicle. At certain point, crumple zones are gone and pure force applied to the occupants. Makes no difference if they hit each other or a pillar.

It makes a huge difference. A wall will not absorb kinetic energy; a well designed car will (to protect the occupants).

Go do some reading.
 

SaiyanZ

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I give up...

Hitting a solid object like a wall will cause each vehicle to crumple faster compared to the two vehicles hitting each other. The wall exerts an opposing force equal to the force of the vehicle hitting it but a crumpling vehicle will exert less of a force because some of the energy is dispersed when the other vehicle crumples. So the crumpling takes longer if two vehicles hit each other thus it is safer.
 

Johnatan56

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Speeding kills.
Speeding doesn't kill, reckless driving does, going 180kmph+ is near always reckless driving.
Was on the N2 yesterday and the day before, did about 350km to my location, I wasn't scared/worried about those speeding at 140-160 past me, I got out the right lane when I saw them coming. What I was scared of were those tailgating because one can't move out of the way as traffic is ahead/to the sides.
 

DMNknight

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Again - crumple zones. There is a reason car manufacturers spend billions on R&D on safety.

Crumple zones are only effective within a certain range of forces. They're designed to absorb and deflect certain kinetic forces away from the key areas you want to protect.
If you overwhelm the crumple zone then it won't act within specifications and its net effect to safety will probably be zero or close to it.

They also allow manufacturers to use cheaper manufacturing materials and less materials (thinner, beveled, hole punched etc) to save in costs.
They make their billions back and then some.
 

rietrot

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How people crash head on is beyond my understanding. Unless ypu fall asleep or something. How do you not see the guy doing something stupid in front of you?
 

Splinter

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Crumple zones are only effective within a certain range of forces. They're designed to absorb and deflect certain kinetic forces away from the key areas you want to protect.
If you overwhelm the crumple zone then it won't act within specifications and its net effect to safety will probably be zero or close to it.

They also allow manufacturers to use cheaper manufacturing materials and less materials (thinner, beveled, hole punched etc) to save in costs.
They make their billions back and then some.

Hey, I never said that it was a silver bullet to end all injuries and fatalities in an accident. Merely that it does make a difference compared to riding into a concrete wall.
 

Willie Trombone

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Speeding doesn't kill, reckless driving does, going 180kmph+ is near always reckless driving.
So you're saying that as long as you're driving safely, you'll never die? LOL. Of course speeding kills, for many reasons. Speeding = reckless driving. Our speed limit is unfortunately too high for the number of unroadworthy cars that share the roads.
Was on the N2 yesterday and the day before, did about 350km to my location, I wasn't scared/worried about those speeding at 140-160 past me
The ones you have to worry about are the guys who lose control of their vehicle at 140kph+.
 

rietrot

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Crumple zones is a stupid idea to start of with. That's why you build something solid like a rollcage if you really plan on crashing. Or why a motorbike helmet is solid. A solid object absorbed the kinetic energy better over a larger surface. A crumple zone does nothing but squash the people inside the car on any real impact.
 

Johnatan56

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So you're saying that as long as you're driving safely, you'll never die? LOL. Of course speeding kills, for many reasons. Speeding = reckless driving. Our speed limit is unfortunately too high for the number of unroadworthy cars that share the roads.
The ones you have to worry about are the guys who lose control of their vehicle at 140kph+.
I didn't say that? I disagree with your statement of Speeding = reckless driving, that's the entire point of what I wrote. If your car can't do 140 comfortably, it's reckless to drive that fast. The speed itself is irrelevant. A huge issue, especially in Cape Town, is bad speed limits, e.g. west coast road's 70, it "makes" people break the law as it's very easy to do way higher speeds on it safely, so they get accustomed to breaking the speed limit.

And why shouldn't I worry about someone who loses control at 120? Or 80? Or 60? Or 20?
 

DMNknight

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How people crash head on is beyond my understanding. Unless ypu fall asleep or something. How do you not see the guy doing something stupid in front of you?

It's what you call a mini-blackout which only training can really combat. Or if you predict the event happening because of the other cars behaviour and you see the kak coming a mile away and you take evasive action. (@SauRoN)

So the first thing that happens is that 1 person has suddenly acted in a non-predictable way, so your mind freezes trying to figure out why things don't look right. This takes precious time.
Once you've figured out that it's the other guy in your lane (or whatever else it is) precious milliseconds have passed and you have made no decisions as to what to do.
Oftentimes, your brain simply goes "oh ****, we're ****ed" and it braces you/itself for impact.
Rarely, the brain actually tries to do something and even more rare, does the brain do something effective.
 

Big Rat

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How people crash head on is beyond my understanding. Unless ypu fall asleep or something. How do you not see the guy doing something stupid in front of you?
Drove to Kimberley and back in the past few weeks. Had to dive off the road on several occasions when trucks, or just cars overtook vehicles without even bothering to look if it was safe.
Trucks overtaking other trucks and running out of road, all of a sudden the bend in road is there, you were planning to be over to your side by that time, but misjudged. Then around the corner some poor sod in tiny car who has to duck into the yellow lane to avoid you.

Cars overtaking 7 trucks and running out of real estate. poor me in front of you, you having no place to go because the 7 trucks are bumper to bumper at 50KPh, you flying at 150 trying to overtake all of them.

Getting into a situation for head on is much easier than you expect. We had trucks, cars SUv and bakkies being arses on the road, yet the long distance taxis were the best road companions. i had one overtake me on a long lonely stretch. he stayed about 200 metres in front of me. I used his brights to illuminate the road ahead of him to my advantage. Traveled like that for about 1/2 hour. Then i pulled over to stretch, fart and have the wife take over. Taxi actually saw me pulling off, he turned around to check if all is OK. Driver just parked next to us asking if all is good.
 

rietrot

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Drove to Kimberley and back in the past few weeks. Had to dive off the road on several occasions when trucks, or just cars overtook vehicles without even bothering to look if it was safe.
Trucks overtaking other trucks and running out of road, all of a sudden the bend in road is there, you were planning to be over to your side by that time, but misjudged. Then around the corner some poor sod in tiny car who has to duck into the yellow lane to avoid you.

Cars overtaking 7 trucks and running out of real estate. poor me in front of you, you having no place to go because the 7 trucks are bumper to bumper at 50KPh, you flying at 150 trying to overtake all of them.

Getting into a situation for head on is much easier than you expect. We had trucks, cars SUv and bakkies being arses on the road, yet the long distance taxis were the best road companions. i had one overtake me on a long lonely stretch. he stayed about 200 metres in front of me. I used his brights to illuminate the road ahead of him to my advantage. Traveled like that for about 1/2 hour. Then i pulled over to stretch, fart and have the wife take over. Taxi actually saw me pulling off, he turned around to check if all is OK. Driver just parked next to us asking if all is good.
This is also my experience. It isn't even strange anymore to see some idiot in your lane.

Must be someone that regularly use the road that's gotten used to just doing what they want. And someone's else 1st time on vacation or something.
 
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supersunbird

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How people crash head on is beyond my understanding. Unless ypu fall asleep or something. How do you not see the guy doing something stupid in front of you?

Well, according to you speeding is a victimless crime, so why do you care? The thing is, due to speeding the closure speed is even faster which lessens your time to react, if some speeding guy is doing something stupid in front of you. Say you going a 120, and they going 190, closure speed is 310km/h, which is 86m/s. The slower you go, the more time you have to react.
 

Splinter

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Crumple zones is a stupid idea to start of with. That's why you build something solid like a rollcage if you really plan on crashing. Or why a motorbike helmet is solid. A solid object absorbed the kinetic energy better over a larger surface. A crumple zone does nothing but squash the people inside the car on any real impact.

Oh jeez. Yep, all those hundreds or thousands of engineers employed by every car manufacturer must be wrong, and you must be right.

Just a tidbit - crumple zones are designed to absorb and deflect energy away from the passenger cell of the car. If they, as you say, simply "squashed" people in a real impact, don't you think they would have had the sh*t sued out of them by now?
 
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