Speed awareness course feedback
Discussion
yonex said:
TwigtheWonderkid said:
Explain why. Don't leave us in suspense.
Which part? Braking from 30 miles to the gallon, or how cars with massively different braking power and weight transfer will decelerate at different rates?He is saying effect of Porsche 911 doing 35 v porsche 911 doing 30 = c18mph residual speed.
&
Ford Cortina doing 35 v Ford Cortina doing 30 = c18mph residual speed.
Edited by vonhosen on Thursday 12th September 22:28
TwigtheWonderkid said:
If you're doing 100 on the motorway, overtake a car doing 70, and 2 mins later you hit a traffic jam, when the car doing 70 rolls up next to you a short time after, explain how you got there sooner?
Because you arrived at the jam 2 minutes before the car you overtook, therefore as the jam clears, you get to re-accelerate away before the car you overtook, which is stuck behind several hundred cars sitting stationary, who can't yet start to move because the car in front is still stationary.Research shows that the "wave" of accel is slower to move than the wave of braking as well (For obvious reasons) so the braking wave goes backwards (iirc at about 40mph) whereas the accel wave goes backwards at only 30 mph. This is why jams get longer!
V8RX7 said:
I do the same and speed every day.
If you don't know better then I pity you, I know my capabilities, I know the weather conditions, I know the traffic, I know what car / van / truck I'm driving, I know what load I'm carrying... so obviously I can make a better judgement on my speed than some random number on a stick.
Exactly what scientific approach do you think was used to set the limits and how often are they reviewed ? It's the same limit at 6am on a sunny summer morning as in the snow, in the dark, at rush hour !
I can tell you in the last 25 years I've had no accidents.
Been let off with a warning approx 10 times
Had one SAC
Had 4 sets of 3 points and fines
Have held a clean license for at least the last 10 years
Now, what was your point ?
Either you’re trolling or you genuinely believe this. You have an extra duty of care she driving loads as each load is different you would hope professional drivers would take a greater duty of care. This isn’t Shakespeare raceway If you don't know better then I pity you, I know my capabilities, I know the weather conditions, I know the traffic, I know what car / van / truck I'm driving, I know what load I'm carrying... so obviously I can make a better judgement on my speed than some random number on a stick.
Exactly what scientific approach do you think was used to set the limits and how often are they reviewed ? It's the same limit at 6am on a sunny summer morning as in the snow, in the dark, at rush hour !
I can tell you in the last 25 years I've had no accidents.
Been let off with a warning approx 10 times
Had one SAC
Had 4 sets of 3 points and fines
Have held a clean license for at least the last 10 years
Now, what was your point ?
Edited by V8RX7 on Thursday 12th September 19:21
vonhosen said:
That's not what he appears to be saying.
He is saying effect of Porsche 911 doing 35 v porsche 911 doing 30 = c18mph residual speed.
&
Ford Cortina doing 35 v Ford Cortina doing 30 = c18mph residual speed.
And I can't wait to see his evidence.He is saying effect of Porsche 911 doing 35 v porsche 911 doing 30 = c18mph residual speed.
&
Ford Cortina doing 35 v Ford Cortina doing 30 = c18mph residual speed.
Edited by anonymous-user on Thursday 12th September 22:28
I generally sat there in amazement at the people on mine, and me being the only person in the room who sat down on the single lane dual carriageway thing.. I only asked one question in mine and it was told off for it - which was about that whole Tiff N porsche video, They didn't like it when I pointed out the porsche could probably accelerate back up to 60 and stop again before the "control" car at the distance in the highway code had stopped for the first time.
George Smiley said:
V8RX7 said:
I do the same and speed every day.
If you don't know better then I pity you, I know my capabilities, I know the weather conditions, I know the traffic, I know what car / van / truck I'm driving, I know what load I'm carrying... so obviously I can make a better judgement on my speed than some random number on a stick.
Exactly what scientific approach do you think was used to set the limits and how often are they reviewed ? It's the same limit at 6am on a sunny summer morning as in the snow, in the dark, at rush hour !
I can tell you in the last 25 years I've had no accidents.
Been let off with a warning approx 10 times
Had one SAC
Had 4 sets of 3 points and fines
Have held a clean license for at least the last 10 years
Now, what was your point ?
Either you’re trolling or you genuinely believe this. You have an extra duty of care she driving loads as each load is different you would hope professional drivers would take a greater duty of care. This isn’t Shakespeare raceway If you don't know better then I pity you, I know my capabilities, I know the weather conditions, I know the traffic, I know what car / van / truck I'm driving, I know what load I'm carrying... so obviously I can make a better judgement on my speed than some random number on a stick.
Exactly what scientific approach do you think was used to set the limits and how often are they reviewed ? It's the same limit at 6am on a sunny summer morning as in the snow, in the dark, at rush hour !
I can tell you in the last 25 years I've had no accidents.
Been let off with a warning approx 10 times
Had one SAC
Had 4 sets of 3 points and fines
Have held a clean license for at least the last 10 years
Now, what was your point ?
Edited by V8RX7 on Thursday 12th September 19:21
Edited by chris4652009 on Friday 13th September 08:32
yonex said:
TwigtheWonderkid said:
Explain why. Don't leave us in suspense.
Which part? Braking from 30 miles to the gallon, or how cars with massively different braking power and weight transfer will decelerate at different rates?The evidence is rudimentary primary school physics. As someone explained earlier the equation for kinetic energy is E=0.5 x mass x velocity^2
Someone earlier in the thread even worked it through to demonstrate how it works.
yonex said:
vonhosen said:
That's not what he appears to be saying.
He is saying effect of Porsche 911 doing 35 v porsche 911 doing 30 = c18mph residual speed.
&
Ford Cortina doing 35 v Ford Cortina doing 30 = c18mph residual speed.
And I can't wait to see his evidence.He is saying effect of Porsche 911 doing 35 v porsche 911 doing 30 = c18mph residual speed.
&
Ford Cortina doing 35 v Ford Cortina doing 30 = c18mph residual speed.
Edited by vonhosen on Thursday 12th September 22:28
But the thing is Yonex, although I can explain it to you, I'll never be able to understand it for you.
stickleback123 said:
yonex said:
TwigtheWonderkid said:
Explain why. Don't leave us in suspense.
Which part? Braking from 30 miles to the gallon, or how cars with massively different braking power and weight transfer will decelerate at different rates?The evidence is rudimentary primary school physics. As someone explained earlier the equation for kinetic energy is E=0.5 x mass x velocity^2
Someone earlier in the thread even worked it through to demonstrate how it works.
TwigtheWonderkid said:
I posted it yesterday at 12:03. The kinetic energy formula. Although, I'm going to fess up, it's not my evidence, I copied it of some bloke called Sir Isaac Newton.
But the thing is Yonex, although I can explain it to you, I'll never be able to understand it for you.
Yes, they decelerate at different rates. Thanks for proving me right. I do love non engineery types. I’d stick to the paper clips in future But the thing is Yonex, although I can explain it to you, I'll never be able to understand it for you.
Lazadude said:
I generally sat there in amazement at the people on mine, and me being the only person in the room who sat down on the single lane dual carriageway thing.. I only asked one question in mine and it was told off for it - which was about that whole Tiff N porsche video, They didn't like it when I pointed out the porsche could probably accelerate back up to 60 and stop again before the "control" car at the distance in the highway code had stopped for the first time.
I wonder when they’ll be updating the video, you’d think with all the money swilling around they’d produce something more interactive?It is definitely the standard of the others which is most enlightening. We were all ‘guilty’ of the same heinous crime though, so I can’t judge
When asked ‘where do you speed the most’ I was the only one who said on country lanes. One guy said ‘but that’s a 60 limit’, quite
They should make them mandatory. Every two years take one and keep your licence. Give the money to a road improvement group, not the bone idle Police. It’d then cost about £20 per head, and raise millions.
But, it’s not about safety, or improving driver education. Just cash.
yonex said:
TwigtheWonderkid said:
I posted it yesterday at 12:03. The kinetic energy formula. Although, I'm going to fess up, it's not my evidence, I copied it of some bloke called Sir Isaac Newton.
But the thing is Yonex, although I can explain it to you, I'll never be able to understand it for you.
Yes, they decelerate at different rates. Thanks for proving me right. But the thing is Yonex, although I can explain it to you, I'll never be able to understand it for you.
Why would the same car driven by the same driver revisiting the same incident decelerate at different rates? Actually don't worry about it, you don't get it, you never will, so lets not waste anymore time on it.
TwigtheWonderkid said:
The point being made is that is braking from 30mpg at point A stops you at point B, had you been doing 35mph at point A, you'd be doing 18mph at point B. That applies if you're in an F1 car, or a Model T Ford. It applies if the car has ceramic discs with expensive tyres, or drum brakes with cheap tyres.
Yes I am intelligent enough to understand your point.Shame you aren't intelligent enough to understand mine
THE LIMIT IS THE SAME FOR ALL CARS, NO MATTER THEIR AGE NOR CONDITION
If stopping in XXXm is the goal then a variable limit should apply because an F1 car sure as hell stops in a lot shorter distance than laden Series 1 Land Rover
George Smiley said:
Either you’re trolling or you genuinely believe this. You have an extra duty of care she driving loads as each load is different you would hope professional drivers would take a greater duty of care. This isn’t Shakespeare raceway
I'm saying a blanket limit isn't correct and I set my own depending upon, vehicle, conditions and load.I assumed you'd be intelligent enough to work out that as conditions deteriorate and / or loads increase, the limit REDUCES.
As Shakespeare Raceway is a housing site... it is.
Gassing Station | General Gassing | Top of Page | What's New | My Stuff