"Just Jeepin'" (macintux)
09/04/2018 at 10:10 • Filed to: None
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"Just Jeepin'" (macintux)
09/04/2018 at 10:10 • Filed to: None | 1
| 11 |
Reading through this piece on the limitations of human vision and how to cope with them , it’s quite astonishing we haven’t all been in fatal accidents by now.
Our brains are good at hiding critical information from us while driving.
https://www.portsmouthctc.org.uk/a-fighter-pilots-guide-to-surviving-on-the-roads/
facw
> Just Jeepin'
09/04/2018 at 10:37 |
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MrDakka
> Just Jeepin'
09/04/2018 at 10:48 |
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The flaws of a meat based substrate
Urambo Tauro
> Just Jeepin'
09/04/2018 at 10:54 |
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...it is an unfortunate fact that if you are converging on a given point with another vehicle at the same speed, and assuming that you are both traveling in a straight line, then there is no apparent movement noticeable by the occupant of either vehicle. That is, to the driver of each vehicle, the other will remain in exactly the same position in the windscreen up to the point of impact.
There’s an excellent video displaying this optical illusion that I’m having trouble finding at the moment. But I know what he’s talking about, and despite the good explanation, I’ve always had trouble relating to it . Maybe it’s that I’m already performing this “lookout scan” he mentions and am taking it for granted. Because I don’t view this type of scanning as some special technique for advanced drivers. It’s just... part of paying attention.
Wheelerguy
> facw
09/04/2018 at 10:55 |
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And even madder motherfuckers race them, too.
Future next gen S2000 owner
> Just Jeepin'
09/04/2018 at 11:30 |
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I saw a video on Youtube, that I now can’t find, that highlighted this using three people. Our eyes are good enough to keep us from being eaten and to eat. That’s about it. It is why we are programmed to find patterns and can see more shades of green than any other color.
BigBlock440
> Urambo Tauro
09/04/2018 at 13:19 |
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I’m having trouble picturing it, I think, but I know I’m definitely already doing the lookout scan thing he mentions. The slowing down for intersections is a great point too. I knew it helped, but I couldn’t quite explain why (though I never thought too hard). Changing the speed of other vehicles relative to you makes sense though.
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Urambo Tauro
> BigBlock440
09/04/2018 at 13:59 |
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He wa s referring to the illusion of a car that appears to be sitting still, on accou nt of how it seems to remain at the same angle relative to the viewer as you approach. But all it takes is a little spacial awareness to overcome that. Objects on intersecting streets don’t stay at the same viewing angle as you approach, unless they’re moving.
Now I’ll admit, I don’t always slow down for every intersection. T here’s already an established right-of-way to govern who gets to proceed and who has to yield (or stop), which makes these apparent collision courses almost a non-issue . Sometimes it’s me who has to slow or stop. But w hen that burden is on the other driver, I proceed (but I do look anyway just for safety’s sake. You never know who’s even paying attention out there... It may be reasonable to expect that everyone will heed right-of-way, but it’s not always safe to assume such a thing) .
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BigBlock440
> Urambo Tauro
09/04/2018 at 14:04 |
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He was referring to the illusion of a car that appears to be sitting still, on account of how it seems to remain at th e same angle relative to the viewer as you approach. But all it takes is a little spacial awareness to overcome that.
Yeah, I’m having trouble seeing that. I’d think the change in size might alert you to it moving, but I don’t really know. I’ll have to look into it more and try to find examples while I’m driving now that it’s got my curiosity .
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Urambo Tauro
> BigBlock440
09/04/2018 at 14:10 |
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Fou nd it. It’s called c onstant bearing, decreasing range (CBDR ) . Jalopnik had an article about it earlier this year. Here’s a dashcam video I found de monstrating the effect (sorry no embed, Kinja Y U hate L iveLeak? ).
Note that CBDR isn’t even the main problem in the video. The main problem is some idiot blowing through a stop sign. But it’s a good display of what the CBDR effect looks like.
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BigBlock440
> Urambo Tauro
09/04/2018 at 14:28 |
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That article was about cyclist staying in the blind spot, I can see that, and have seen it firsthand, but I’m having trouble picturing actually being able to see it and thinking it’s sitting still. I’ll have to watch the video later, see if I can figure it out for myself.
Captain of the Enterprise
> Just Jeepin'
09/04/2018 at 17:07 |
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Wow, what a good find. It’s very interesting and can explain a lot.