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Visual syndrome where drivers cant see objects near e.g. A-pillars

Hi 

Just been rear-ended at a roundabout, having been sat there stationary for 30-60 seconds waiting for a gap in the traffic.  BC Insurance / police / witness are on the case.

I seem to remember something I saw on this site about how human vision can fail to see objects in the peripheries of e.g. a windscreen.  I can't for the life of me remember the name of the syndrome so if anyone can enlighten me I would be grateful.  I'm wondering if the driver in this case experienced this.

Cheers

Ed

 

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14 comments

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tugglesthegreat | 6 years ago
3 likes
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kil0ran | 6 years ago
2 likes

If there were photos taken of the scene, check where their satnav/mobile was. Shouldn't be obstructing the swept area of the screen, and next to the A-pillar they can create an even larger blind-spot.

Driving yesterday rolling up to a roundabout I managed to hide an entire bright red T5 Transporter van behind my a-pillar, only caught it in my final check for the junction.

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PRSboy | 6 years ago
0 likes

Are you thinking of the way the brain compensates for the blind spots in your vision by 'filling in' the gap, and hence can not see something that is there?

Yes there is a posh name for that... can't remember it though!

 

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davel replied to PRSboy | 6 years ago
2 likes

PRSboy wrote:

Are you thinking of the way the brain compensates for the blind spots in your vision by 'filling in' the gap, and hence can not see something that is there?

Yes there is a posh name for that... can't remember it though!

 

I think this might be saccadic masking, but saccades and compensation and its effects (chronostasis etc) is interesting stuff.

I can't think of a 'syndrome' that the OP might be referring to; the only thing springing to mind is tunnel vision.

Alternatively, as others have said, it might have been a big dose of 'sorry mate I couldn't be arsed to see you'.

 

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PRSboy replied to davel | 6 years ago
1 like

davel wrote:

PRSboy wrote:

Are you thinking of the way the brain compensates for the blind spots in your vision by 'filling in' the gap, and hence can not see something that is there?

Yes there is a posh name for that... can't remember it though!

 

I think this might be saccadic masking, but saccades and compensation and its effects (chronostasis etc) is interesting stuff.

I can't think of a 'syndrome' that the OP might be referring to; the only thing springing to mind is tunnel vision.

Alternatively, as others have said, it might have been a big dose of 'sorry mate I couldn't be arsed to see you'.

 

 

Cheers- That's the one I was thinking of, though I'd got the description completely wrong!

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edster99 replied to davel | 6 years ago
0 likes

davel wrote:

PRSboy wrote:

Are you thinking of the way the brain compensates for the blind spots in your vision by 'filling in' the gap, and hence can not see something that is there?

Yes there is a posh name for that... can't remember it though!

 

I think this might be saccadic masking, but saccades and compensation and its effects (chronostasis etc) is interesting stuff.

I can't think of a 'syndrome' that the OP might be referring to; the only thing springing to mind is tunnel vision.

Alternatively, as others have said, it might have been a big dose of 'sorry mate I couldn't be arsed to see you'.

 

  

Yep that's what I was thinking of ! I wish it has been any sort of sorry though, rather than starting off with 'what the f*** are you doing, you're a bloody menace'.  The cops took a pretty dim view of that.  

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Legs_Eleven_Wor... | 6 years ago
1 like

One memorable occasion, coming down hill towards traffic lights, slow to a halt as they're on red.  Sit there for maybe ten, fifteen seconds and I hear a car coming behind me.  I glance to the right, satisfied in my peripheral vision that the car has come to a stop.  I look forward again and about three seconds later, I feel a 'shunt' from behind.    Get off the bike, go to driver's window.  By the time I get there, the driver is already shouting, 'you fackin' rolled back into me, ya cant!'

I politely enquire as to how many bicycles he knows have reverse gear which will allow them to 'reverse' up a hill.  'Pay fackin' road tax, ya fackin' cant!' is the screamed response as he runs the red and goes on his way.

Sadly for him, the camera doesn't lie.  Or in this case, the helmet camera doesn't lie.  He got three points and a £250 fine.  

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giff77 | 6 years ago
3 likes

Yeah. It’s called laziness. 

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oldstrath | 6 years ago
4 likes

Don't  know the posh name. It ought to be called CBA syndrome. They vaguely look, don't see anything big enough to hurt them or their precious, stop caring.

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edster99 | 6 years ago
0 likes

Thanks.  Fortunately I'm ok, I think she was taking no notice at all.  Saying 'you came out of nowhere' repeatedly is a clue.  Someone used to have this syndrome  in their profile I think.

 

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madcarew | 6 years ago
2 likes

The most likely reason they didn't see you is because they didn't expect to see you. Other physiological factors may have been in play, but those drivers that only take a cursory look and don't see something didn't expect to see what they were looking at, so failed to register it. It's a simple and very common phenomena which your brain actually uses to interpret the world and not suffer information overload, as well as Canyon48 suggests, part of the process your brain uses to stitch a series of 'still' shots into a motion view of the world.

Well demonstrated in this video https://www.youtube.com/watch?v=vJG698U2Mvo

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Canyon48 | 6 years ago
1 like

First off, I hope you and your bike are ok!

I can't remember the exact term for this, but it does exist (that doesn't mean it was a factor). Trying to remember back to my human performance studies I did for my pilot's license!

If there is a fixed relative closing angle between two objects, it is very difficult for the human eye to pick up an object in the peripheral (as there is no relative movement of the object in relation to the windscreen). Moreover, if you only do a quick observation/lookout the eye can actually miss objects due to the way your brain stitches together images. On top of all of that, your eye can actually see an object that is on a collision course, but because your brain doesn't expect to see that object (or doesn't understand that object), your brain can literally erase it from your vision. A lot was learnt about these factors in WWII, when fighter pilots literally would not see very obvious targets - and they'd get shot down.

However, all that said, it is more likely the driver was paying very little attention, was distracted, or was looking at traffic on the roundabout on the right and didn't even take one look at you.

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Look555 replied to Canyon48 | 6 years ago
1 like

Canyon48 wrote:

I can't remember the exact term for this, but it does exist (that doesn't mean it was a factor). Trying to remember back to my human performance studies I did for my pilot's license!

 

I think what you're referring to is “constant bearing, decreasing range” - by coincidence I found this article earlier in the week:

 

https://singletrackworld.com/2018/01/collision-course-why-this-type-of-r...

 

In sailiing the phenomenom means that if you see a ship that doesn't seem to be moving then its becuase you're on a collission course. I'm not sure that is the effect here, probably the brain painting in the missing images from the stereoscopic cpitures it pieces together. One eye sees a pillar which the other eye does not so the image from the non-pillar eye is filled into the brain. There was an excellent article written by a pilot on this suggestinng you must always look two  or three times to make sure when assessing the road situation.

 

I now move laterally as I approach junctions to help the driver see a different movement to the one more prone to  be painted out.

 

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ktache | 6 years ago
5 likes

They managed not to see a stationary object through their big glass windscreen.  Probably shouldn't be on the road.

They don't just hit little us, street furniture, other cars, buses and lorries, it's kind of shocking what they manage not to see.

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