VW Adaptive Cruise/Anti-Collision Radar - Nearly crashed!
Discussion
TooMany2cvs said:
So there was a vehicle still partially across the road in front of you and - as you accelerated towards it - the car decided that wasn't very smart? Seems... fair.
Nail, meet head! Think about how these things work OP: it detects an obstacle at a distance away and, based on your current speed, determines how much distance you have to stop in and whether the car is capable of that. It's basically telling you that you don't have enough time to stop the car from your speed in the distance available.I have the system in my Golf, and it really doesn't understand when you temporarily reduce your gap to a car that's turning off. Your brain can see it will be gone by the time you get there. It can't differentiate.
That said, I've never had it brake for me, just beep wildly. Could you have hit the brake when you heard it beep? That's what the warning is intended for.
Here's a boring video https://www.youtube.com/watch?v=pU_W0EcFods
EDIT Ahh, you're saying that the car had gone completely and it was being dimwitted? I think that needs looking at then.
That said, I've never had it brake for me, just beep wildly. Could you have hit the brake when you heard it beep? That's what the warning is intended for.
Here's a boring video https://www.youtube.com/watch?v=pU_W0EcFods
EDIT Ahh, you're saying that the car had gone completely and it was being dimwitted? I think that needs looking at then.
Edited by court on Tuesday 5th January 15:40
CraigyMc said:
I had a volvo hirecar do something like this to me as I pulled up to a security gate with a badge reader. It performed an emergency stop instead of letting me cruise past, with the window close enough for me to swipe in.
I turned the feature off. Pile of crap.
Pile of crap....because it worked. How many security gates do you go thru compared to how many cars you travel behind. If I had the feature on my car, I'd keep it on, but change my security gate approach technique.I turned the feature off. Pile of crap.
Mine (another Golf Mk7) will beep in close lanes of traffic from time to time.
I did have someone pull across my off side front and the car auto braked. It obviously thought they were coming all the way so did its stuff. In the event the guy appeared to be fiddling with his heater or something. Didn't bother me particularly.
I did have someone pull across my off side front and the car auto braked. It obviously thought they were coming all the way so did its stuff. In the event the guy appeared to be fiddling with his heater or something. Didn't bother me particularly.
I have a 2015 VW Passat and have had similar things happen (On numerous occasions). Often a very similar situation although and you don't have to have the adaptive cruise enabled. I don't really see an issue with it as it only happens when the car in-front is turning and maybe I am a little eager to go past as "I know it will be out of the way by the time I reach them". The car doesn't know this though so I don't blame it for slamming the anchors on. IMO I think the car is correct and I am happy to drive in a way that fits with this.
kambites said:
Pintofbest said:
So the car autobraked to a halt, heavy enough to make your daughter scream, and stopped only a car length from the back of another vehicle...
If I were you I'd be telling people how the safety feature just stopped you having a crash.
He doesn't say a car's length behind it. I took that to mean he was a car's length to the side of it (as in on the opposite side of the road). If I were you I'd be telling people how the safety feature just stopped you having a crash.
Chr1sch said:
a Mk5 Fiesta I was following turned left
As far as your car's computery stuff is concerned you are closing very fast on an object in front of you so it reacts accordingly. I agree with:romeogolf said:
The car can't understand if a vehicle is turning off or not, just whether or not it's moving away from you or towards you and whether or not it's actually there. So the system sounds like it was working correctly.
Edited by paintman on Tuesday 5th January 16:45
Sorry just catching up post work, and some interesting replies...
So to be clear, I had good sight down the road the car was turning left into, it was only a small fiesta of which i'd say everything bar the back bumper had cross the lines (80% ish of the car) into the road when i started to accelerate, i was by no means tailgating (the car actually has another warning if you start getting too close...visual and then beeping)
It is reassuring to hear others have had the same thing or similar, and I agree that whilst this has happened I dont feel inclined to disable completely given scenario's such as those where you look right at a roundabout and the car in front has stopped when it is clear...
That said, my first inclination was to turn it off, it braked alarmingly hard and fast in a scenario where I dont think any car behind me would be prepared for it...I mean picture it........2-3 car lengths behind a car doing 30-40mph, road clears, and he stands the car on its nose...unless you are bloody Houdini you are going to hit me.
I do now have a certain amount of trepidation and concern as to when else such overrides take control of the vehicle away from me in situations when other road users wont expect it.
So to be clear, I had good sight down the road the car was turning left into, it was only a small fiesta of which i'd say everything bar the back bumper had cross the lines (80% ish of the car) into the road when i started to accelerate, i was by no means tailgating (the car actually has another warning if you start getting too close...visual and then beeping)
It is reassuring to hear others have had the same thing or similar, and I agree that whilst this has happened I dont feel inclined to disable completely given scenario's such as those where you look right at a roundabout and the car in front has stopped when it is clear...
That said, my first inclination was to turn it off, it braked alarmingly hard and fast in a scenario where I dont think any car behind me would be prepared for it...I mean picture it........2-3 car lengths behind a car doing 30-40mph, road clears, and he stands the car on its nose...unless you are bloody Houdini you are going to hit me.
I do now have a certain amount of trepidation and concern as to when else such overrides take control of the vehicle away from me in situations when other road users wont expect it.
So were you actually accelerating directly towards the back of the car? Or were was the car already completely out of your path (even if it was still protruding into your lane) when the system hit the brakes?
If the former, it's working as designed. If the latter, it's not meant to do that.
If the former, it's working as designed. If the latter, it's not meant to do that.
kambites said:
So were you actually accelerating directly towards the back of the car? Or were was the car already completely out of your path (even if it was still protruding into your lane) when the system hit the brakes?
If the former, it's working as designed. If the latter, it's not meant to do that.
Haha give me some credit, absolutely the latter!If the former, it's working as designed. If the latter, it's not meant to do that.
I usually drive with great attention to the surroundings, usually look right through the car directly in front of me. Im always looking 1 or 2 cars ahead of it and that includes pavements for potential hazards, as this gives me enough time to prepare to brake, as I can see a potential hazard well before the car directly in front of me reacts. anyway that's the aim, bad habit I don't know, seems to work for me.
now that the scene has been set.
today whilst I was looking well ahead for any potential hazards (like I do), the car direct in front of me, came to a random halt (Emergency brake). a car head on wanted to take a right. what seemed like the car in front of me giving way. but that didn't happen either, it sped of without giving way (vw)
I can only imagine the auto brake system kicked in. it caught me well of guard. I wasn't expecting it from 30-35mph steady flow, clear road and footpath ahead to a complete halt and then not giving way and carrying on.
the first thing that came to my mind was,'I just got brake tested'. it is a dangerous system until all cars are fitted with it, just causes random unexpected braking.
now that the scene has been set.
today whilst I was looking well ahead for any potential hazards (like I do), the car direct in front of me, came to a random halt (Emergency brake). a car head on wanted to take a right. what seemed like the car in front of me giving way. but that didn't happen either, it sped of without giving way (vw)
I can only imagine the auto brake system kicked in. it caught me well of guard. I wasn't expecting it from 30-35mph steady flow, clear road and footpath ahead to a complete halt and then not giving way and carrying on.
the first thing that came to my mind was,'I just got brake tested'. it is a dangerous system until all cars are fitted with it, just causes random unexpected braking.
Edited by doodz444 on Tuesday 5th January 19:51
Chr1sch said:
Hi all,
Just looking for advice/thoughts here...
I've recently taken delivery of a Mk7 Gti, its bloody fantastic....one of the features is the adaptive cruise/anti-collision radar thing.
Anyway, merrily driving along yesterday, a Mk5 Fiesta I was following turned left (rather slowly in all fairness) and as it pulled off I accelerated away (rest assured I was NOT tailgating etc), anyway, next thing I know the car beeps and literally stands on its nose!
I mean it was a hugely aggressive stop, my daughter screamed, the car stopped dead and i must have been at least 5 meters away from the Fiesta and it was 80% off the road at that point.
Does this sound normal or should I be getting the garage to look at it urgently? If a car had been behind me it would, without doubt, have read ended me...
Any thoughts?
I had an Audi S5 which had this feature and I've had a similar situation, though not quite pulling my car to a dead stop, but applied the brake a bit. I also had on a few occasions when I had the collision warning from the bollards in the middle of the road.Just looking for advice/thoughts here...
I've recently taken delivery of a Mk7 Gti, its bloody fantastic....one of the features is the adaptive cruise/anti-collision radar thing.
Anyway, merrily driving along yesterday, a Mk5 Fiesta I was following turned left (rather slowly in all fairness) and as it pulled off I accelerated away (rest assured I was NOT tailgating etc), anyway, next thing I know the car beeps and literally stands on its nose!
I mean it was a hugely aggressive stop, my daughter screamed, the car stopped dead and i must have been at least 5 meters away from the Fiesta and it was 80% off the road at that point.
Does this sound normal or should I be getting the garage to look at it urgently? If a car had been behind me it would, without doubt, have read ended me...
Any thoughts?
I think it seems to happen when it detects things either very slightly to the side or if you are turning and it momentarily detects something across your path.
I've heard reports of crisp packets triggering the radar sensor at the front of the car, though not had that myself though.
supertouring said:
What I don't understand is that all these new gizmos are introduced into cars but no-one is given any training on them so they know how it works and what to expect. Then come the first time it triggers then people decide they are useless and turn them off.
RTFM. I made sure I knew what the features were when I bought mine.I've definitely changed the way I think when following cars today because of the new adaptive cruise and general safety braking features in many new cars.
The big difference is that for years if you were following someone like the OP you would expect them to judge the passing of the car turning off in such a manner that incorporated a level of risk that a computer won't tolerate. There is nothing wrong with that type of driving and almost everyone does it. Your human brain makes the calculation that the car turning off will be long gone by the time to arrive and you can see no obvious obstacles to impede this. Obviously you are taking a calculated gamble and obviously it catches people out every so often but it is the way that the human brain works. A computer doesn't think the same way as a human brain and so it will react differently.
I've certainly seen cars doing emergency stops over a situation that a human wouldn't have applied anywhere near the aggressive level of braking. It is definitely a new evolution on the road and something important to factor in. The chances of a car doing a random emergency stop for no true reason has catagorically increased beyond just being the plonker who hits the wrong pedal.
I think I have also suddenly realised why I'm overtaking a car multiple times on motorway journeys these days. Something that never really used to happen. I'm assuming it's people on adaptive cruise control? I'm seeing more and more people who will scream up behind a car in the middle lane and historically you would anticipate them pulling out to pass but this doesn't happen, instead they brake to match the speed of the car in front and just stay there and only accelerate if that car moves across to L1.
So I can be driving in L1 at 70 approaching a car in L2 doing 65 and a car passes me at 80 but then slows to 65 when it reaches the car in front so I move to L3 and pass both of them. But a little later the same car will pass again at 80 but shortly after I'll have to move from L1 to L3 at 70 to pass it again and another car doing 65. But i could be alongside in L3 and passing only to have this car suddenly accelerate away in L2 if the obstacle in front of him moves over to L1.
I travelled about 10 miles up the M1 yesterday with a red Jag XE passing me repeatedly at 80 only for me to trundle pass a few minutes later at 70. So this is when it finally dawned on me that this chap wasn't mental or trying to wind me up but was using adaptive cruise control and just never moving out of the middle lane?
I definitely think that because more and more cars are not solely under the control of the human mind but preset computers that it's important to adjust our awareness accordingly.
The big difference is that for years if you were following someone like the OP you would expect them to judge the passing of the car turning off in such a manner that incorporated a level of risk that a computer won't tolerate. There is nothing wrong with that type of driving and almost everyone does it. Your human brain makes the calculation that the car turning off will be long gone by the time to arrive and you can see no obvious obstacles to impede this. Obviously you are taking a calculated gamble and obviously it catches people out every so often but it is the way that the human brain works. A computer doesn't think the same way as a human brain and so it will react differently.
I've certainly seen cars doing emergency stops over a situation that a human wouldn't have applied anywhere near the aggressive level of braking. It is definitely a new evolution on the road and something important to factor in. The chances of a car doing a random emergency stop for no true reason has catagorically increased beyond just being the plonker who hits the wrong pedal.
I think I have also suddenly realised why I'm overtaking a car multiple times on motorway journeys these days. Something that never really used to happen. I'm assuming it's people on adaptive cruise control? I'm seeing more and more people who will scream up behind a car in the middle lane and historically you would anticipate them pulling out to pass but this doesn't happen, instead they brake to match the speed of the car in front and just stay there and only accelerate if that car moves across to L1.
So I can be driving in L1 at 70 approaching a car in L2 doing 65 and a car passes me at 80 but then slows to 65 when it reaches the car in front so I move to L3 and pass both of them. But a little later the same car will pass again at 80 but shortly after I'll have to move from L1 to L3 at 70 to pass it again and another car doing 65. But i could be alongside in L3 and passing only to have this car suddenly accelerate away in L2 if the obstacle in front of him moves over to L1.
I travelled about 10 miles up the M1 yesterday with a red Jag XE passing me repeatedly at 80 only for me to trundle pass a few minutes later at 70. So this is when it finally dawned on me that this chap wasn't mental or trying to wind me up but was using adaptive cruise control and just never moving out of the middle lane?
I definitely think that because more and more cars are not solely under the control of the human mind but preset computers that it's important to adjust our awareness accordingly.
Edited by DonkeyApple on Sunday 24th January 10:37
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