Cruise Control use when raining

Submitted: Thursday, Sep 11, 2008 at 19:35
ThreadID: 61583 Views:3436 Replies:15 FollowUps:6
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Hi all,
not a fan of cruise control but this arrived in my email today.
This has been verified with the RAC and it is something that should be in the vehicle manual.


I wonder how many people know about this?

A 36-year-old female had an accident several weeks ago and totalled her car. A resident ofWollongong, NSW, she was travelling between Wollongong & Sydney. It was raining, though not excessively, when her car suddenly began to hydroplane and literally flew through the air.

She was not seriously injured but very stunned at the sudden occurrence!

When she explained to the policeman what had happened, he told her something that every driver should know - NEVER DRIVE IN THE RAIN WITH YOUR CRUISE CONTROL ON.

She had thought she was being cautious by setting the cruise control and maintaining a safe consistent speed in the rain. But the policeman told her that if the cruise control is on and your car begins to hydroplane -- when your tyres lose contact with the pavement, your car will accelerate to a higher rate of speed and you take off like an airplane. She told the policeman that was exactly what had occurred.

The policeman estimated her car was actually travelling through the air at 10 to 15 kms per hour faster than the speed set on the cruise control

The policeman said this warning should be listed, on the driver's seat sun-visor - NEVER USE THE CRUISE CONTROL WHEN THE PAVEMENT IS WET OR ICY, along with the airbag warning. We tell our teenagers to set the cruise control and drive a safe speed - but we don't tell them to use the cruise control only when the road is dry.

The only person the accident victim found, who knew this (besides the policeman), was a man who had had a similar accident, totalled his car and sustained severe injuries. If you send this to your friends and only one of them doesn't know about this, then it was all worth it. You might have saved a life.



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Reply By: Member - Nev (TAS) - Thursday, Sep 11, 2008 at 19:36

Thursday, Sep 11, 2008 at 19:36
The bit about the RAC was in the email, not my comment.
AnswerID: 324825

Reply By: Member - Olcoolone (S.A) The O - Thursday, Sep 11, 2008 at 19:43

Thursday, Sep 11, 2008 at 19:43
It's a load of junk, it started as a spam email.

It started about 18 months ago.

About 6 months ago ABC radio investigated it and found it to be false, they went as far as contacting the authority who was meant to of sent the original and the confirmed it is a hoaxs.

The ABC spoke to major organisations involve in traffic control and they said much the same.

Cruise control is safe in the wet.
AnswerID: 324830

Reply By: Member - Doug M (SA) - Thursday, Sep 11, 2008 at 19:47

Thursday, Sep 11, 2008 at 19:47
If you had posted this on the 1st of April we might have had a bit of fun with it. Or maybe you thought it was Friday!
AnswerID: 324833

Follow Up By: Member - Nev (TAS) - Thursday, Sep 11, 2008 at 19:53

Thursday, Sep 11, 2008 at 19:53
You guys aren't any fun any more!!!
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FollowupID: 591960

Reply By: Member - Graham H (QLD) - Thursday, Sep 11, 2008 at 19:56

Thursday, Sep 11, 2008 at 19:56
If you are ever in doubt about emails etc that tell you about the most dangerous virus ever detected in the world


Go to this page and check before you mass mail all your friends false information

http://www.symantec.com/business/security_response/threatexplorer/risks/hoaxes.jsp

Put it in your favourites cos its a bit hard to find if you havent got this url
AnswerID: 324835

Reply By: Member - Longtooth (SA) - Thursday, Sep 11, 2008 at 21:40

Thursday, Sep 11, 2008 at 21:40
or............have a look at this site.

www.snopes.com/autos/techno/wetroad.asp
AnswerID: 324849

Reply By: Member - Rob S (NSW) - Thursday, Sep 11, 2008 at 21:58

Thursday, Sep 11, 2008 at 21:58
Sounds like another job for Myth Busters ,LOL.
I only ever made one mistake
and that's when I thought I was wrong!

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AnswerID: 324854

Reply By: howie - Thursday, Sep 11, 2008 at 22:08

Thursday, Sep 11, 2008 at 22:08
i am a big fan of cruise control and use it in all zones from 60 kph to 110kph driving (and incidentally flying).
i would not have a car without it, it is on the steering wheel and is very easy to control.
it has probably saved me hundreds of dollars in fines & many demerit points.
however, there are some situations where it does not feel 'right' to use it.
those conditions are wet weather, some corrugated roads ,windy roads (among others) where you need to be vigilant and have full control of the vehicle.
i question the 'flying thru the air' as water will try to stop your forward progress, the cruise control probably accelerating to try and maintain the cars speed.
i doubt the car ever went faster than the 'set' speed.
sounds like the driver would have been at the wrong speed if the car had been driven normally or with the cruise control on.
i agree though, drivers should be trained that there is a difference between 'cruise control' and 'auto-pilot'.
also, what would be the correct action when confronted by this event? did she brake?




AnswerID: 324856

Reply By: ian - Thursday, Sep 11, 2008 at 22:49

Thursday, Sep 11, 2008 at 22:49
What nonsense.
Surely if you loose traction your wheels spin and the car slows. Just sounds like bad driving
Ian
AnswerID: 324873

Follow Up By: Krakka - Friday, Sep 12, 2008 at 05:04

Friday, Sep 12, 2008 at 05:04
Think you will find that when you are aquaplaning on a wet road you loose contact with the surface of the road and hence you speed up cos no friction. You are effectively drifting on a layer of water.
Regards Krakka
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FollowupID: 592025

Follow Up By: Middle Jeff - Friday, Sep 12, 2008 at 09:03

Friday, Sep 12, 2008 at 09:03
Ian you are dead right, if the wheels start spinning the car will slow down. It reads of the speedo, which is in the gear box, it does not work of some magic wind speed.

Have fun

Craig
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FollowupID: 592032

Reply By: andoland - Friday, Sep 12, 2008 at 09:07

Friday, Sep 12, 2008 at 09:07
Cruise control works by measuring your wheel rotational speed, not the speed of the car along the road (as cruise control is not operated by GPS it has no way of knowing how fast you are moving, just how fast your wheels (or actually driveshaft/gearbox output shaft) is spinning.

Regardless of what the car is doing the cruise control will try to keep the wheels spinning at the same speed. So if you started to aquaplane, your engine revs and therefore wheels speed is likely to increase initially as the load that the engine is driving is suddenly reduced from the lack of traction. The cruise control will then back off the throttle to get the wheel speed back down to the set point. Then when your wheels get traction again and load is reapplied to the engine you will slow down. The cruise control will then accelerate back to the set speed, but at the normal rate it accelerates and only when you have traction back again.

So in reality the complete opposite will happen to what is described in the story above.
AnswerID: 324912

Follow Up By: Member -Dodger - Friday, Sep 12, 2008 at 16:53

Friday, Sep 12, 2008 at 16:53
Right on he button Ando.
I used to have a handle on life, but it broke.

Cheers Dodg.

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Reply By: Member - Kemsley C (QLD) - Friday, Sep 12, 2008 at 11:34

Friday, Sep 12, 2008 at 11:34
And if you have a modern car with stability control and or traction control, the cruise control will turn off as soon as the system activates.
AnswerID: 324927

Reply By: Moose - Friday, Sep 12, 2008 at 13:39

Friday, Sep 12, 2008 at 13:39
Surely the "literally flew through the air" and the "you take off like an airplane" bits give the game away. What a load of BS. Without a ramp or a cliff or similar those things ain't gonna happen.
AnswerID: 324938

Reply By: austastar - Friday, Sep 12, 2008 at 14:18

Friday, Sep 12, 2008 at 14:18
A cobber of mine was 'cruising' along the highway, Mrs was driving, and he was adjusting the radio.
Mrs interfered, as he was not familiar with it, and she was.
That moment of inattention on her part put the little Subaru wagon off the highway. They were being violently thrown around as the Subaru went valiantly cross country at high speed, her feet were way off the controls, and the little wagon taking out numerous shrubs and small trees as it tried to maintain the set cruise speed. Eventually it stalled or stopped - not sure; it was an automatic.
When repaired, he had the cruise control disabled.
AnswerID: 324946

Follow Up By: Member - Graham H (QLD) - Friday, Sep 12, 2008 at 21:35

Friday, Sep 12, 2008 at 21:35
Might have been more sensible to disable the radio or the Mrs.
Looks like the cruise worked fine. Only thing that did LOL
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Reply By: Pete Jackman (SA) - Friday, Sep 12, 2008 at 14:27

Friday, Sep 12, 2008 at 14:27
And the version on Snopes says:

"A 36-year-old female had an accident several weeks ago and totalled her car. A resident of Kilgore, Texas, she was travelling between Gladewater & Kilgore. ..." etc.

Hoax.

Cheers

Pete
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AnswerID: 324950

Reply By: Member - Oldbaz. NSW. - Friday, Sep 12, 2008 at 15:32

Friday, Sep 12, 2008 at 15:32
Good on Yer Nev, you got them out of the woodwork with that one.. How is that Jack oiler going ? Mine hasnt been out of the shed since March, going to take it for a run next month to Lakes Entrance. cheers...oldbaz.
AnswerID: 324958

Follow Up By: Member - Nev (TAS) - Friday, Sep 12, 2008 at 18:50

Friday, Sep 12, 2008 at 18:50
Ditto Oldbaz the jack is looking quite lonely. Am finally doing a trip to Launceston tomorrow (about 480Km return) to pick up some drawers and a fridge I bought off Ebay... Engel of course. Also off next week to do some fly fishing at Arthurs and Pine Tier.
Apart from that the jack oiler looks good so far.
Rgds
Nev

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FollowupID: 592087

Reply By: Member - Mike DID - Saturday, Sep 13, 2008 at 09:15

Saturday, Sep 13, 2008 at 09:15
The advantage of driving with Cruise Control in dicy conditions is that I can drive with my foot on the Brake Pedal.

I can brake much faster, compared with having to lift my foot off the accelerator and having to move it to the Brake Pedal.
AnswerID: 325038

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