Collision avoidance fail?

Collision avoidance fail?

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Discussion

Mound Dawg

1,915 posts

174 months

Wednesday 28th June 2017
quotequote all
It's a worrying thought if you're in a situation like the OP, joining a motorway from a slip road and traffic is zip merging.

I can see a situation where the car you're looking to tuck in behind overreacts to the car joining in front of him and anchors up leaving you driving into a now non existent space.

cptsideways

13,546 posts

252 months

Wednesday 28th June 2017
quotequote all
Have just had the displeasure of a new Tiguan for three weeks, it did something similar to me 3 times in those three weeks. Massively over reactive & on two of those occasions positively dangerous imho & I work in the industry testing & demonstrating this stuff.

It appears to get confused, especially when surrounded by other vehicles, I assume its a radar bounce back issue off of other vehicles that should not be a concern to the system - BUT IT IS

A truly awful thing to drive anyway so just avoid like the plague.

JZZ30

1,076 posts

115 months

Wednesday 28th June 2017
quotequote all
saaby93 said:
No more worrying about trying to find a gap when joining a motorway bowtie
hehe

veccy208

1,321 posts

101 months

Wednesday 28th June 2017
quotequote all
JZZ30 said:
saaby93 said:
No more worrying about trying to find a gap when joining a motorway bowtie
hehe
laugh revenge to all those rude people wh o try block you out of lane.

Sounds horrible I'd be terrified to drive a car that might randomly slam the brakes on at any moment!

Ceeejay

399 posts

151 months

Wednesday 28th June 2017
quotequote all
FlabbyMidgets said:
Hypothetically, if this caused a collision, could VW be responsible perhaps?

Edited by FlabbyMidgets on Tuesday 27th June 21:38
The person who ran up the back of the braking car would be at fault. I would imagine we all follow too closely sometimes, whether it be subconsciusly thinking we have left enough of a gap, or consciously in order to prevent others cutting in during heavy traffic. I use the active cruise control on my Golf on the motorway, and even at the minimum distance setting at 70mph, it leaves a big enough gap for an optimistic driver to cut in. If they're braking during this manouever my brakes come on quite hard to match their deceleration creating the gap again.

Its not good for smooth motorway driving where gaps need to shrink and grow. Its very much like the outside lane during busy conditions, where lots of people are in a rush and braking and accelerating, and the impact flows back down the chain, whereas an inside lane often flows faster with bigger gaps.

The collision avoidance has only ever activated once on my car, and it certainly saved me from plowing into someone else.

Its a pretty good system for "nannying" drivers, but its not intelligent enough to make judgements, only fixed decisions. The software will adapt in the future im sure.

Fastpedeller

3,872 posts

146 months

Wednesday 28th June 2017
quotequote all
That sound horrendous. Maybe I'm 'old school' but I don't even like the cruise control on our car...... rolling along nicely, but where you'd just decelerate a little you have to brake a little for the reduction in speed. I prefer to have more control.

Sheepshanks

32,764 posts

119 months

Wednesday 28th June 2017
quotequote all
Ceeejay said:
The person who ran up the back of the braking car would be at fault. I would imagine we all follow too closely sometimes, whether it be subconsciusly thinking we have left enough of a gap, or consciously in order to prevent others cutting in during heavy traffic. .
Sounds like a good reason for staying in lane 3. At least you'll only be rammed by a car then - what you really don't want is a 44 ton artic ploughing into you.

motco

15,956 posts

246 months

Wednesday 28th June 2017
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akirk said:
all good for autonomous cars then if this is the current level of intelligent systems! wink
My thoughts exactly.

Leins

9,468 posts

148 months

Wednesday 28th June 2017
quotequote all
Had a loan A4 a while back, and didn't realise it had this feature until it picked up on a cyclist going the wrong way up a bus-lane (approaching on my lefthand side). Brakes slammed on, and got beeped from the car behind. No thanks!

Sheepshanks

32,764 posts

119 months

Wednesday 28th June 2017
quotequote all
wack said:
It did once in traffic when the car in front dawdled a bit and I got closer than it liked which woke me up, I'd only had the car a week, I didn't even know it had collision avoidance
If you're someone who adopts a "synchronised driving" mode, where at junctions and roundabouts etc you're cutting things fine by anticipating what's going to happen then you really do have to adapt your driving style.

motco

15,956 posts

246 months

Wednesday 28th June 2017
quotequote all
Sheepshanks said:
wack said:
It did once in traffic when the car in front dawdled a bit and I got closer than it liked which woke me up, I'd only had the car a week, I didn't even know it had collision avoidance
If you're someone who adopts a "synchronised driving" mode, where at junctions and roundabouts etc you're cutting things fine by anticipating what's going to happen then you really do have to adapt your driving style.
No, you stick to driving a proper car not some half-arsed automaton.

Speed Badger

2,691 posts

117 months

Wednesday 28th June 2017
quotequote all
I've never understood the point of cruise control. Its just for fat, lazy Americans with weak ankles.

Sheepshanks

32,764 posts

119 months

Wednesday 28th June 2017
quotequote all
motco said:
No, you stick to driving a proper car not some half-arsed automaton.
I imagine it'll be standard soon and so will eventually work its way down the used market. It's been mandatory on new large trucks for a couple of years.

Chr1sch

2,585 posts

193 months

Wednesday 28th June 2017
quotequote all
Ive had a good moan about this on here before in my mk 7 Golf GTI

It is positively lethal at times, cars turning off very slowly, busy roundabouts etc, it just suddenly beeps, dash goes red and anchors on the brakes, its bloody dangerous.

Adaptive cruise is great on the motorway if quiet enough, but other than that, im straight into sport to disable it if im pressing on

To top it all off i get a smack from the wife for not paying attention lol

RenPug

630 posts

168 months

Wednesday 28th June 2017
quotequote all
cptsideways said:
Have just had the displeasure of a new Tiguan for three weeks, it did something similar to me 3 times in those three weeks. Massively over reactive & on two of those occasions positively dangerous imho & I work in the industry testing & demonstrating this stuff.

It appears to get confused, especially when surrounded by other vehicles, I assume its a radar bounce back issue off of other vehicles that should not be a concern to the system - BUT IT IS

A truly awful thing to drive anyway so just avoid like the plague.
What is it you do in the industry? Pm if preffered.

I spend my day dealing with ADAS solutions and recalibration etc.

Cyberprog

2,190 posts

183 months

Wednesday 28th June 2017
quotequote all
Chr1sch said:
Ive had a good moan about this on here before in my mk 7 Golf GTI

It is positively lethal at times, cars turning off very slowly, busy roundabouts etc, it just suddenly beeps, dash goes red and anchors on the brakes, its bloody dangerous.

Adaptive cruise is great on the motorway if quiet enough, but other than that, im straight into sport to disable it if im pressing on

To top it all off i get a smack from the wife for not paying attention lol
I've driven the new mk7 and it is wonderful on the motorway, but as you said, a pain in the arse elsewhere!

I also tend to adopt the syncronised driving style, and my missus twitches or shouts at things that I've *already* factored in and was watching, but her reaction throws me off, which is bloody annoying!

motco

15,956 posts

246 months

Wednesday 28th June 2017
quotequote all
Cyberprog said:
I've driven the new mk7 and it is wonderful on the motorway, but as you said, a pain in the arse elsewhere!

I also tend to adopt the syncronised driving style, and my missus twitches or shouts at things that I've *already* factored in and was watching, but her reaction throws me off, which is bloody annoying!
Oh isn't it! Mine likewise...