Man killed because his cruise control wouldn't switch off!

Man killed because his cruise control wouldn't switch off!

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Discussion

Andehh

7,110 posts

206 months

Thursday 24th November 2016
quotequote all
AJL308 said:
Shaw Tarse said:
AJL308 said:
It says the accelerator pedal was depressed. The cruise control could have been responsible for that.
Does cruise move the pedal?
All of the cars I've had with CC have done it.
Really? So all the car for you have held the accelerator peddle down according to what you set the cruise control at? What car's are they?

I had a Skoda Octavia (mk2) with cruise that certainly did not do that, going off the article I assume he was driving the Octavia mk3.

John145 said:
2 different flexray signals from 2 different ECUs, one is throttle pedal position and other is DAS engine torque demand. The two are calculated from different places and one does not effect the other.
That's the technical description for my layman's logic. smile

FunkyNige

8,883 posts

275 months

Thursday 24th November 2016
quotequote all
AJL308 said:
It says the accelerator pedal was depressed. The cruise control could have been responsible for that.
Depends on how it's being recorded, surely? If it was taking the information from the throttle pedal that suggests the actual pedal was depressed, if it was taking it from the data being sent from the cruise control TO the engine then it could be the pedal or the cruise system. Article suggests it was a manual which makes it more bizaare, I could understand being asleep and waking up, panicking and pressing the wroing pedal for a few seconds, but 8 minutes of being in the car and awake surely the panic would subside a little bit and rational thoughts would creep in.

Zod

35,295 posts

258 months

Thursday 24th November 2016
quotequote all
Andehh said:
AJL308 said:
Shaw Tarse said:
AJL308 said:
It says the accelerator pedal was depressed. The cruise control could have been responsible for that.
Does cruise move the pedal?
All of the cars I've had with CC have done it.
Really? So all the car for you have held the accelerator peddle down according to what you set the cruise control at? What car's are they?

I had a Skoda Octavia (mk2) with cruise that certainly did not do that, going off the article I assume he was driving the Octavia mk3.
I don't believe there is a single car on the market now or in the past thirty years on which the accelerator pedal is moved by the cruise control.

AJL308

Original Poster:

6,390 posts

156 months

Thursday 24th November 2016
quotequote all
menguin said:
AJL308 said:
Andehh said:
Last 1/3 of the article says it all. He had the accelerator peddle depressed...

[quote]The inquest heard that the main car part that recorded the data was destroyed in the collision, but it had fed the information to the vehicle's airbag system.

That data revealed the Skoda was travelling at 116mph with the accelerator pedal fully depressed five seconds before the crash.

No braking was recorded, but there was evidence of small steering left and right as dashcam footage from Mr Hague's HGV showed the car veering from the middle lane into nearside lane, where the motorway merged with A40.

The car continued to accelerate and hit a top speed of 119mph with the accelerator pedal pressed two-thirds of the way down, two seconds before the impact at 94mph when it was fully off, the inquest heard.

Mr Clatworthy said: "There is no indication that there was any error or problem with any of the electronic systems of the car in the five seconds leading up to the collision."
It says the accelerator pedal was depressed. The cruise control could have been responsible for that.
Would cruise control [i]fully[/] depress the pedal? Any cruise control system I've used before has used gradual acceleration, not WOT.
A mate of mine has recently acquired a big Volvo of some description which has this active cruise, I think it's called. It adjusts your speed according to traffic. If you've set it to 70 and you come up behind something doing 50 it slows you down to match the speed. If you pull out to overtake it gets you back up to 70. He commented that it accelerates much quicker than he would have expected it to. Certainly more quickly than he would have done.

Shaw Tarse

31,543 posts

203 months

Thursday 24th November 2016
quotequote all
When I was learning to drive, the throttle jammed on mum's car.
Luckily it was a manual, so I put my foot on the clutch pedal.

rscott

14,753 posts

191 months

Thursday 24th November 2016
quotequote all
AJL308 said:
menguin said:
AJL308 said:
Andehh said:
Last 1/3 of the article says it all. He had the accelerator peddle depressed...

[quote]The inquest heard that the main car part that recorded the data was destroyed in the collision, but it had fed the information to the vehicle's airbag system.

That data revealed the Skoda was travelling at 116mph with the accelerator pedal fully depressed five seconds before the crash.

No braking was recorded, but there was evidence of small steering left and right as dashcam footage from Mr Hague's HGV showed the car veering from the middle lane into nearside lane, where the motorway merged with A40.

The car continued to accelerate and hit a top speed of 119mph with the accelerator pedal pressed two-thirds of the way down, two seconds before the impact at 94mph when it was fully off, the inquest heard.

Mr Clatworthy said: "There is no indication that there was any error or problem with any of the electronic systems of the car in the five seconds leading up to the collision."
It says the accelerator pedal was depressed. The cruise control could have been responsible for that.
Would cruise control [i]fully[/] depress the pedal? Any cruise control system I've used before has used gradual acceleration, not WOT.
A mate of mine has recently acquired a big Volvo of some description which has this active cruise, I think it's called. It adjusts your speed according to traffic. If you've set it to 70 and you come up behind something doing 50 it slows you down to match the speed. If you pull out to overtake it gets you back up to 70. He commented that it accelerates much quicker than he would have expected it to. Certainly more quickly than he would have done.
My Saab 9-3 (year 2000) would also use plenty of throttle when on cruise, but only if I hammered the speed increase button . It also recorded throttle position and cruise throttle request as different parameters (viewed by the OBD link). It also most certainly never moved the pedal.


Just wondering - could it have been a diesel engine gone runaway?

AJL308

Original Poster:

6,390 posts

156 months

Thursday 24th November 2016
quotequote all
Andehh said:
AJL308 said:
Shaw Tarse said:
AJL308 said:
It says the accelerator pedal was depressed. The cruise control could have been responsible for that.
Does cruise move the pedal?
All of the cars I've had with CC have done it.
[/b]Really? So all the car for you have held the accelerator peddle down according to what you set the cruise control at? What car's are they?[/b]

I had a Skoda Octavia (mk2) with cruise that certainly did not do that, going off the article I assume he was driving the Octavia mk3.

John145 said:
2 different flexray signals from 2 different ECUs, one is throttle pedal position and other is DAS engine torque demand. The two are calculated from different places and one does not effect the other.
That's the technical description for my layman's logic. smile
I had a Merc 500 SEC which did it. I currently have a Vectra (manual) and an auto VW Phaeton (perhaps the same system as the Octavia?)which both do it. Although now you've brought it up you have me doubting my self. I'll experiment later today.

AJL308

Original Poster:

6,390 posts

156 months

Thursday 24th November 2016
quotequote all
rscott said:
AJL308 said:
menguin said:
AJL308 said:
Andehh said:
Last 1/3 of the article says it all. He had the accelerator peddle depressed...

[quote]The inquest heard that the main car part that recorded the data was destroyed in the collision, but it had fed the information to the vehicle's airbag system.

That data revealed the Skoda was travelling at 116mph with the accelerator pedal fully depressed five seconds before the crash.

No braking was recorded, but there was evidence of small steering left and right as dashcam footage from Mr Hague's HGV showed the car veering from the middle lane into nearside lane, where the motorway merged with A40.

The car continued to accelerate and hit a top speed of 119mph with the accelerator pedal pressed two-thirds of the way down, two seconds before the impact at 94mph when it was fully off, the inquest heard.

Mr Clatworthy said: "There is no indication that there was any error or problem with any of the electronic systems of the car in the five seconds leading up to the collision."
It says the accelerator pedal was depressed. The cruise control could have been responsible for that.
Would cruise control [i]fully[/] depress the pedal? Any cruise control system I've used before has used gradual acceleration, not WOT.
A mate of mine has recently acquired a big Volvo of some description which has this active cruise, I think it's called. It adjusts your speed according to traffic. If you've set it to 70 and you come up behind something doing 50 it slows you down to match the speed. If you pull out to overtake it gets you back up to 70. He commented that it accelerates much quicker than he would have expected it to. Certainly more quickly than he would have done.
My Saab 9-3 (year 2000) would also use plenty of throttle when on cruise, but only if I hammered the speed increase button . It also recorded throttle position and cruise throttle request as different parameters (viewed by the OBD link). It also most certainly never moved the pedal.


Just wondering - could it have been a diesel engine gone runaway?
That's a good point.

Again though, that in its self shouldn't prevent it being knocked out of gear.

Gargamel

14,987 posts

261 months

Thursday 24th November 2016
quotequote all

Surely there is a master kill switch, like there is on bikes ?


Andehh

7,110 posts

206 months

Thursday 24th November 2016
quotequote all
For what it's worth, I was lucky enough to have a full fat Range Rover V8 Supercharged for a few weeks and if you moved out from behind a car the cruise control on that engaged it would swiftly accelerate you back up to speed. That suprised me enough that I stopped using it.

Muncher

12,219 posts

249 months

Thursday 24th November 2016
quotequote all
Zod said:
I don't believe there is a single car on the market now or in the past thirty years on which the accelerator pedal is moved by the cruise control.
It does in my MK 3 Mondeo. On the petrol models that have a normal mechanical approach to throttle control then the cruise module pulls the throttle lever & that same lever then pulls on the throttle cable at the same time which means the pedal moves accordingly too.

TheInternet

4,716 posts

163 months

Thursday 24th November 2016
quotequote all
"The driver, whom the inquest heard was a car enthusiast"

..despite everything in the article suggesting the opposite. Amongst other things:

Drives slow Skoda
In white
Doesn't know how it works
Can't navigate a straight bit of motorway at 3am
Self confessed MLM
Presses accelerator to try and slow down
Doesn't brake to try and slow down

Suicide or Darwin.


TTwiggy

11,537 posts

204 months

Thursday 24th November 2016
quotequote all
AJL308 said:
All of the cars I've had with CC have done it.
I must have owned at least 8 cars with CC (including my current one) and the throttle pedal has never moved on any of them. Why would it need to?

Pachydermus

974 posts

112 months

Thursday 24th November 2016
quotequote all
Hoofy said:
Can someone really be that dense as to mash the accelerator pedal thinking they were braking (80 year olds aside)?
I suspect the answer is yes

TheInternet

4,716 posts

163 months

Thursday 24th November 2016
quotequote all
TTwiggy said:
I must have owned at least 8 cars with CC (including my current one) and the throttle pedal has never moved on any of them. Why would it need to?
If physically attached to the throttle.

900T-R

20,404 posts

257 months

Thursday 24th November 2016
quotequote all
Andehh said:
Even Automatics allow you to change into neutral at speed?
They do (says he, who accidentally knocked autobox Mercedes' with the column mounted gear selector into neutral when driving, more than once redface ).

TheJelley

196 posts

139 months

Thursday 24th November 2016
quotequote all
This sounds very similar to the Toyota sudden acceleration problem.

That was found to be user error - and not a problem at all. Malcom Gladwell did a podcast on it in the summer.

This is the synopsis. Tragic but fascinating at the same time, a horrible thing for the family.


Sheepshanks

32,752 posts

119 months

Thursday 24th November 2016
quotequote all
Andehh said:
Fair enough moment of panic, but over 8 minutes someone couldn't have stated the bleedin' obviousl.....
My thoughts too. My car has no indication cruise is engaged and can give a momentary WTF as it ceases to slow down if you've driven above the set speed for a while and then slow down having forgotten to dis-engage it. But it is a moment - you realise straight-away.

I assumed he'd be an old guy but he's 32 and said to be a car enthusiast. Wonder what he was doing out at 3AM? Obviously there's a number of perfectly valid reasons.

AJL308

Original Poster:

6,390 posts

156 months

Thursday 24th November 2016
quotequote all
900T-R said:
Andehh said:
Even Automatics allow you to change into neutral at speed?
They do (says he, who accidentally knocked autobox Mercedes' with the column mounted gear selector into neutral when driving, more than once redface ).
It's exciting when you do it when the cruise is engaged - feels like the engine is trying to leap out of the car!

AndrewEH1

4,917 posts

153 months

Thursday 24th November 2016
quotequote all
Sounds like he may have got his pedals mixed up. I wonder whether he was usually driving around at 3AM though...

Doesn't explain how pressing the engine on/off button didn't slow the car down unless you can't turn the engine off whilst moving as part of some safety feature?