Adaptive Cruise Is this true Article in Courier Mail

[IsDon]

Thats Jetta, your reading skills aren't up to scratch.

You said current model A6.

You seem confused between passive, active, and adaptive.

The A6, even now, is standard with active that applies the brakes. Adaptive is an option.

Pull your head in and stop being belligerent.

Pot, this is kettle, confirm colour, over.

We seem to be battling on terminology here. I'm not the one confused about terminology, but it appears you are. Active cruise is used to describe adaptive cruise in some makes. They are synonymous.

Now getting down to basics just for your benefit. Straight from the A6 standard equipment list is the following:

"Cruise control with braking to maintain set speed." Note please there is no mention of the word "active" which seems to be a third type of cruise control you've dreamt up.

Now in the optional technik package is:

"Adaptive cruise control with stop&go function."

So there's adaptive (active), and there's non-adaptive (passive). Some passive systems control braking, like the A6 does, as do numerous other higher end cars, some don't. They're still considered to be passive systems.

http://www.audi.com.au/content/dam/n...on%20Guide.pdf

By definition a passive system is one that listens and not transmits. An active system is one that transmits as well as receives. So if it uses radar it is, by definition, an active system. This is not just motor vehicle terminology it it also used in the military where I spent 16 years of my life. There are active homing missiles, for example, which use radar, and passive missiles which use heat or GPS among other things.

Now, as much as I hate referencing motoring journalists, here's one who has pretty much nailed it.

Active Cruise Control explained | Practical Motoring

As he says ACC stands for Active cruise control or Adaptive cruise control. The terms are interchangeable. The both refer to the active component which uses radar or lidar to sense for other vehicles. The only exception to this that I'm aware of is the Subaru system which uses a purely passive system called Eye-sight. This uses stereoscopic cameras to detect vehicles ahead and adjust the cruise speed accordingly. Subaru calls it Adaptive Cruise Control but it still technically a passive system.

Now can we at least agree that cruise control is not dependant upon GPS as the journalist in the first post alleges? Agree he's an idiot and move on?

How are we doing Hillbilly? Is that game, set and match?

[ian]

If your using your Spedo to engage the cruise control you could be out up to `10KMH
Ive check my Tiguan agianst a GPS and thats what i set my speed by
you car might say 110KPH but in fact your just doing 100KPH,

[Guest001]

If your using your Spedo to engage the cruise control you could be out up to `10KMH
Ive check my Tiguan agianst a GPS and thats what i set my speed by
you car might say 110KPH but in fact your just doing 100KPH,

Almost all VW speedos are out by at least 6% by design as are most makes. The law allows them to be that but not to read less than actual speed

[IsDon]

Not certain, but was told once that the allowance for Australia is 10% + 6 KM/H.

So at 100 KM/H true speed your indicated could be as high as 116. But it can't under read at all. Thank the nanny state, "speed kills" nonsense for that.

GPS speed from a separate GPS or Waze on you phone is the easiest way to check how much your speedo over reads by then you'll know where your true 100 sits on the dial.

Wife's MY17 Tiguan overheads by about 3% so its pretty good. The Audi is about the same.


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[Guest001]

Not certain, but was told once that the allowance for Australia is 10% + 6 KM/H.

So at 100 KM/H true speed your indicated could be as high as 116. But it can't under read at all. Thank the nanny state, "speed kills" nonsense for that.

GPS speed from a separate GPS or Waze on you phone is the easiest way to check how much your speedo over reads by then you'll know where your true 100 sits on the dial.

Wife's MY17 Tiguan overheads by about 3% so its pretty good. The Audi is about the same.


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The simplified explanation of the relevant ADR rule on speedos is that it may be up to 10% +/- 4 fast. But may not read slower than actual speed. Our Polo is 7 over at 100kph but it would take an illegal tyre size to correct it.
Have tried and failed with VCDS. A GPS is always a second or so behind realtime as well.
Is not only in Australia that a similar rule applies.

[Sunny43.5]

Just been shopping Forgot the Popcorn Dam*

Thinking the same thing Hillbilly , staying well away from this one .

[theresanothersteve]

Mate, thankfully you've stopped the name calling...

As I've said there are three types of cruise control, irrespective of what they are called.

The first, most common, is used to accelerate and maintain speed. That's what you find on most entry level cars. VW use this system, except they've linked the gearbox controller to it so it will change down to help maintain speed down hill.

The second, which a standard A6 uses, until now has been common in higher spec vehicles. As you have noticed it also incorporates braking to maintain speed.

The last, becoming all the rage, uses sensors to monitor the car in front and adjusts speed to maintain a safe distance.

And I hate to say it, but Rolls Royce has indeed been playing with GPS as part of its systems. At this stage its been to pre-engage the appropriate gear for the upcoming hill/ corner/ whatever (so it must be accessing topographical maps.

Interestingly, the i30 (where all this began) has three types of cruise, what I've called passive (across the range), active (high spec models) and adaptive (part of a tecknik style safety package). I find, however, many of the people who use "Ask Smithy" (or whatever the advice page in the paper is called this week) are often ignorant and misunderstand information.

I'll finish with a story. A mate of mine was service manager for a Honda dealership. A customer bought a new car and came in a few days later complaining it needed a wheel alignment. They did the alignment but found nothing wrong. A few days later the customer was back, wanting a wheel alignment. Again they checked, all good. When they came back a third time he asked why it needed a wheel alignment. The customer said it was because the H on the wheel caps were not all pointing up at the same time, the wheel alignment was out. True story...

[Jondalar]

Adaptive cruise control won't work if any of the brake lights are out, because it definitely can apply the brakes. Poor journalism again.

[Sunny43.5]

I'll finish with a story. A mate of mine was service manager for a Honda dealership. A customer bought a new car and came in a few days later complaining it needed a wheel alignment. They did the alignment but found nothing wrong. A few days later the customer was back, wanting a wheel alignment. Again they checked, all good. When they came back a third time he asked why it needed a wheel alignment. The customer said it was because the H on the wheel caps were not all pointing up at the same time, the wheel alignment was out. True story...

Now thats not an alignment issue thats OCD !

[IsDon]

Now thats not an alignment issue thats OCD !

Maybe he's used to driving a Bentley.

Their logos always line up because they're on bearings and remain essentially stationary as the wheel turns.

For us mortals however.