Collision avoidance fail?
Discussion
Was on my way to work today when I was joining the M4. I was still on the slip road. New Passat to my right in lane 1, sort of in my blind spot, planned to slow a little a slip into the big space behind it. All of a sudden I hear a squeeze. The Passat has completely slammed on the brakes, Abs working it's best, and it just stops in lane 1. It must have been maximum braking. Some cars a few seconds behind the Passat looked very close to having a rear end accident with the now stationary Passat.
I'm guessing the collision avoidance faffery detected me, thought there was to be a collision, and slammed on the anchors? Hypothetically, if this caused a collision, could VW be responsible perhaps?
I'm guessing the collision avoidance faffery detected me, thought there was to be a collision, and slammed on the anchors? Hypothetically, if this caused a collision, could VW be responsible perhaps?
Edited by FlabbyMidgets on Tuesday 27th June 21:38
FlabbyMidgets said:
Was on my way to work today when I was joining the M4. I was still on the slip road. New Passat to my right in lane 1, sort of in my blind spot, planned to slow a little a slip into the big space behind it. All of a sudden I hear a squeeze. The Passat has completely slammed on the brakes, Abs working it's best, and it just stops in lane 1. It must have been maximum braking. Some cars a few seconds behind the Passat looked very close to having a rear end accident with the now stationary Passat.
I'm guessing the collision avoidance faffery detected me, thought there was to be a collision, and slammed on the anchors? Hypothetically, if this caused a collision, could VW be responsible perhaps?
I've a 2016 Passat. Hes probably had it on radar cruise control.I'm guessing the collision avoidance faffery detected me, thought there was to be a collision, and slammed on the anchors? Hypothetically, if this caused a collision, could VW be responsible perhaps?
Edited by FlabbyMidgets on Tuesday 27th June 21:38
What confuses the hell out of mine is if you're on say a main A road, a car ahead is turning right and moves into a sliproad / lane to turn right (so you'd just be travelling on along the flow of the road and passing it on its left), my car thinks i'm going to hit the car (effectively ahead of me to my right) and slams on the brakes.
V annoying.
Unlikely to have been triggered by your vehicle because if the other Passat was in your blind spot you were unlikely to be within the field of view of its radar and camera. Most likely to have been caused by the vehicle ahead in some way i.e. the one you were aiming to tuck in behind.
Surely you get a warning before it brakes, on my B class if there's a car in front waiting to turn it doesn't like my 30 years experience of it'll be gone when I get there, there's a lot of beeping going on but it's not braked yet in that situation.
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
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
wack said:
Surely you get a warning before it brakes, on my B class if there's a car in front waiting to turn it doesn't like my 30 years experience of it'll be gone when I get there, there's a lot of beeping going on but it's not braked yet in that situation.
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
Nope.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
foggy said:
Unlikely to have been triggered by your vehicle because if the other Passat was in your blind spot you were unlikely to be within the field of view of its radar and camera. Most likely to have been caused by the vehicle ahead in some way i.e. the one you were aiming to tuck in behind.
It seems to have quite a wide angle. The car in front would need to have done almost an emergency stop for the Passat to have reacted like that.There was a fair gap in front of the Passat, but it would have required a fair bit of acceleration to do so safely, the gap behind it was perfect. Passat was just in the corner of my eye, his front bumper was I'm guessing in line with the middle of my door. Not sure if his radar would pick me up there. I'm genuinely surprised there was no accident, especially as it was nearly rush hour, with somewhat heavy traffic behind us. 2 Lane motorway too, would have been an absolute nightmare
daemon said:
wack said:
Surely you get a warning before it brakes, on my B class if there's a car in front waiting to turn it doesn't like my 30 years experience of it'll be gone when I get there, there's a lot of beeping going on but it's not braked yet in that situation.
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
Nope.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
wack said:
daemon said:
wack said:
Surely you get a warning before it brakes, on my B class if there's a car in front waiting to turn it doesn't like my 30 years experience of it'll be gone when I get there, there's a lot of beeping going on but it's not braked yet in that situation.
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
Nope.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
The other 2% its a
though 
A Merc A-Class I hired had this system, if a car peeled off down a side road and the car decided I hadn't quite eased off enough it would slam on the brakes after about 1/4 of a second of warning beeps.
Scared the crap out of me the first time it happened. It didn't slow to a stop though, just until it was happy the danger had passed.
If that Passat slammed on full and came to a stop I'd suspect the driver was doing the braking rather than the car.
Scared the crap out of me the first time it happened. It didn't slow to a stop though, just until it was happy the danger had passed.
If that Passat slammed on full and came to a stop I'd suspect the driver was doing the braking rather than the car.
I've got this system on my golf and whilst doing 4 hours motorway driving on Sunday I found it's very good at determining when you're in your lane and what other vehicles are/aren't.
I'd be very surprised if your car caused it to do an emergency stop, unless you had traveled over the white line in front of the Passat.
I'd be very surprised if your car caused it to do an emergency stop, unless you had traveled over the white line in front of the Passat.
daemon said:
I've a 2016 Passat. Hes probably had it on radar cruise control.
What confuses the hell out of mine is if you're on say a main A road, a car ahead is turning right and moves into a sliproad / lane to turn right (so you'd just be travelling on along the flow of the road and passing it on its left), my car thinks i'm going to hit the car (effectively ahead of me to my right) and slams on the brakes.
V annoying.
I had a loan of a new Merc A-class not so long ago, it didn't have the adaptive cruise or collision avoidance kit. I consider myself lucky that it doesn't because it does have collision warning alarms, one of the roads I frequently commute on it doesn't seem to agree with.What confuses the hell out of mine is if you're on say a main A road, a car ahead is turning right and moves into a sliproad / lane to turn right (so you'd just be travelling on along the flow of the road and passing it on its left), my car thinks i'm going to hit the car (effectively ahead of me to my right) and slams on the brakes.
V annoying.
A sharp right 2 lane crossover sliproad, being a knob I tend to sit in the right lane and pass traffic that has slowed down to ~50 for the corner, normally lorries. I noticed twice in the Merc as I am passing a lorry immediately on my left the collision alarm goes absolutely berserk as it thinks I am about to barrel into a 45-50mph lorry at ~65mph. I never thought of it at the time but if a collision avoidance faffery did kick in and slam on the anchors I would be very likely to leave the road in a rather horrendous accident, as is usually the result of hitting the brakes when you are right on the edge of your front tyre traction.
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