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PostPosted: Tue Aug 22, 2006 22:17 
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http://news.bbc.co.uk/1/hi/uk/5276196.stm

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Car buyers 'denied safety system'

A safety system which could prevent more than 400 deaths a year and 3,000 serious injuries is not being fitted on most new cars, it has emerged.

Electronic stability control (ESC) is available as standard in less than 40% of new British cars, Thatcham motor insurance research centre found.

The system works in situations where a driver may be losing control of a car.

The safety mechanism is fitted as standard in more than 90% of new cars in Sweden and 60% in Germany.

Thatcham urged manufacturers to fit the system - which costs £50 to manufacture - as standard on all new cars.

The system works through sensors which feed the nature of the emergency to a computer, which then intervenes by selectively braking individual wheels automatically.

This process helps the driver to control the vehicle.

Thatcham, a Berkshire-based firm, said just six out of 38 manufacturers fit ESC as standard to their entire range of UK vehicles.

Those companies are Mercedes, Audi, Volvo, Porsche, Lexus and Cadillac.

And five manufacturers - Chevrolet, Daihatsu, Lotus, Proton and Suzuki - do not have the safety mechanism at all, even as an optional extra.

Thatcham crash laboratory manager Matthew Avery described the current situation as "a shocking state of affairs".

He said: "British motorists, their passengers and other road users deserve the very best - do manufacturers think that their lives are less valuable?

"ESC doesn't just help during a crash like an airbag - it helps prevent the accident happening in the first place."

I'm very sceptical about the "400 deaths a year" figure - I suspect that's more than the total fatalities in "loss of control" car accidents. But is this something that should be fitted as standard to all new cars, as ABS is now?

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PostPosted: Tue Aug 22, 2006 22:42 
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I heard about this watching BBC breakfast this morning. They also interviewed a Top Gear guy and another guy. After the newslady spoke to both of them about how car companies overcharged she then, in typical BBC fashion, asked the non-Top Gear guy something along the lines of, "Isn't speed also an issue in these emergency situations" with the guy then replying something like "oh yes we need to get drivers to slow down and observe the speed limit".

I just sighed.


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PostPosted: Wed Aug 23, 2006 05:52 
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These systems are only an small step of development from abs?
the main difference must be that each wheel can be indivdually controled by the abs and a giroscope? the rest is software. Where is the great additional cost.

They come into thier own not when you are speeding but when a nutty pedestrian runs into the road or someone reverses out of a drive without looking or pulls out of a side junction. Or if you are tailgating and the trafic stops.

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PostPosted: Wed Aug 23, 2006 06:27 
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anton wrote:
These systems are only an small step of development from abs?
the main difference must be that each wheel can be indivdually controled by the abs and a giroscope? the rest is software. Where is the great additional cost.


The cost is in the additional sensors (steering angle, gyro) required to make the system operate. ABS that modulates all 4 brakes and drive-by-wire throttle. Not all cars have this already.

Also where do they come up with all those fancy numbers on lives saved. Its complete rubbish.

I recon if you added up the combined benefit of all the crap that we are fed on the number of lives saved we would be CREATING more than 10,000 lives a year... :lol:

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PostPosted: Wed Aug 23, 2006 12:23 
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This in the news today

Quote:
The SMMT yesterday responded to Thatcham’s statement by noting that no active safety system is currently included as part of Thatcham's insurance rating criteria, which means that “more and more new car buyers are benefiting from the technologies, but not cheaper insurance premiums”.

With Thatcham saying that international insurance figures point to a 15% reduction in damage costs where ESC is fitted, the SMMT called for Thatcham to direct its members to pass that saving onto customers by offering 15% off policies for cars with the system.


A fair point say............put up or shut up!

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PostPosted: Wed Aug 23, 2006 12:37 
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I'm worried about ESP.

1) I think the nutters will soon learn to rely on it, but at some point the real physics overcomes the electronic chassis cleverness and they crash at a higher speed.

2) I'm also worried about a 'skilled driver' who may have been benefitting from ESP without his knowledge in one particular vehicle, then drives a non-esp vehicle. At some point the handling gets outside his experience envelope and he's a gonna.

But it might be quite a good thing for Mr and Mrs average, and I don't know what we would have to do to determine net gain or losses (save large scale scientific study, with a true cross section of drivers.) Note that insurance data could hide zillions of my number 2s.

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PostPosted: Wed Aug 23, 2006 13:38 
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ESP can only get you out of trouble once you are in trouble - its the mid-engined car scenario. hugely stable until it goes, but once its gone its hard to recovery from

I actually thought of a proper inteligenct speed control system that could easily be applied.

Rather than integrating the sat nav to the speed limiter according to the speed limit. The car could monitor the telemetry (speed gear controls) addopted for a driver on the approach to a given bend and alert the driver to an unusual variance.

for example if I take on avg a 60deg bend at an avg speed of 50mph. and a 90deg bend at 30mph. the system could alert me if I was approaching a 90deg bend at a much higher speed. link it to the use of lights, windscreen wipers and temp gage, clock and the system could baseline the driver, road and conditions.

Over time it would build up a database of driver skill (i.e if I start regularly taking 60deg bends at 60mph, it would adjust the thresholds.

We'd then have a car that could warn you in advance that you may be on the limit.


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PostPosted: Wed Aug 23, 2006 13:49 
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diy wrote:
ESP can only get you out of trouble once you are in trouble - its the mid-engined car scenario. hugely stable until it goes, but once its gone its hard to recovery from

I actually thought of a proper inteligenct speed control system that could easily be applied.

Rather than integrating the sat nav to the speed limiter according to the speed limit. The car could monitor the telemetry (speed gear controls) addopted for a driver on the approach to a given bend and alert the driver to an unusual variance.

for example if I take on avg a 60deg bend at an avg speed of 50mph. and a 90deg bend at 30mph. the system could alert me if I was approaching a 90deg bend at a much higher speed. link it to the use of lights, windscreen wipers and temp gage, clock and the system could baseline the driver, road and conditions.

Over time it would build up a database of driver skill (i.e if I start regularly taking 60deg bends at 60mph, it would adjust the thresholds.

We'd then have a car that could warn you in advance that you may be on the limit.


OTOH I suppose we could learn to drive, would that be any help?

Sorry diy, I'm not getting at you, but I'm sceptical about some of this technology. It's very clever, but are we really applying it sensibly?

Best wishes all,
Dave.


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PostPosted: Wed Aug 23, 2006 13:50 
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Does anyone know how ESP behaves once the grip thresholds have been exceeded and steering lock cannot be translated into cornering force?

Does it give max cornering force? Or does it give up and allow big understeer? Or does it give up and apply max ABS braking in the hope that there's space to have another go at the original steering input from a lower speed?

Or does it simply confine itself to keeping the vehicle pointed in more or less the direction of travel?

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PostPosted: Wed Aug 23, 2006 13:54 
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TripleS wrote:
diy wrote:
ESP can only get you out of trouble once you are in trouble - its the mid-engined car scenario. hugely stable until it goes, but once its gone its hard to recovery from

I actually thought of a proper inteligenct speed control system that could easily be applied.

Rather than integrating the sat nav to the speed limiter according to the speed limit. The car could monitor the telemetry (speed gear controls) addopted for a driver on the approach to a given bend and alert the driver to an unusual variance.

for example if I take on avg a 60deg bend at an avg speed of 50mph. and a 90deg bend at 30mph. the system could alert me if I was approaching a 90deg bend at a much higher speed. link it to the use of lights, windscreen wipers and temp gage, clock and the system could baseline the driver, road and conditions.

Over time it would build up a database of driver skill (i.e if I start regularly taking 60deg bends at 60mph, it would adjust the thresholds.

We'd then have a car that could warn you in advance that you may be on the limit.


OTOH I suppose we could learn to drive, would that be any help?

Sorry diy, I'm not getting at you, but I'm sceptical about some of this technology. It's very clever, but are we really applying it sensibly?


I'm with you. Experienced drivers mostly lose control in untypical situations (unexpected mud on road for example). But the electronics wouldn't know about the mud either and we'd be back to interfering with normal driving and STILL failing to deal with exceptions.

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PostPosted: Fri Aug 25, 2006 22:11 
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SafeSpeed wrote:
I'm worried about ESP.

1) I think the nutters will soon learn to rely on it, but at some point the real physics overcomes the electronic chassis cleverness and they crash at a higher speed.

2) I'm also worried about a 'skilled driver' who may have been benefitting from ESP without his knowledge in one particular vehicle, then drives a non-esp vehicle. At some point the handling gets outside his experience envelope and he's a gonna.


There is a bigger worry.

That car designers are relying on ESP instead of designing a car which handles safely in the first place.


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PostPosted: Sat Aug 26, 2006 09:53 
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Homer wrote:

There is a bigger worry.

That car designers are relying on ESP instead of designing a car which handles safely in the first place.


Didn't they use ESP to help solve the problems with the Merc A class when they discovered they fell over

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PostPosted: Sat Aug 26, 2006 12:00 
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Homer wrote:
SafeSpeed wrote:
I'm worried about ESP.

1) I think the nutters will soon learn to rely on it, but at some point the real physics overcomes the electronic chassis cleverness and they crash at a higher speed.

2) I'm also worried about a 'skilled driver' who may have been benefitting from ESP without his knowledge in one particular vehicle, then drives a non-esp vehicle. At some point the handling gets outside his experience envelope and he's a gonna.


There is a bigger worry.

That car designers are relying on ESP instead of designing a car which handles safely in the first place.


You should work in aviation. Most modern military hull designs are completely unstable without the systems controlling every aspect of flight dynamics. However, it's this instability that gives quite outstanding maneuverability when called upon.


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PostPosted: Mon Aug 28, 2006 15:12 
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SafeSpeed wrote:
Does anyone know how ESP behaves once the grip thresholds have been exceeded and steering lock cannot be translated into cornering force?

it first attempts to save you by cutting the power and braking the appropriate wheels to make the turn you've requested usually before you even realise it's needed, however if you exceed the limits by a stupid amount then you just slide like you would in a 'normal' car until you're going slow enough for it to take over (or you crash and burn).


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