The Z-line vs. the SMIDSY

[Hot_Air]

@Horse Please could you share the link to your article about how to use the Z-line to avoid SMIDSYs? My Google Fu couldn't find it

[The Spin Doctor]

As I happen to be online here and know where the article is...

http://the-ride-info.blogspot.com/2008/ ... ction.html

[The Spin Doctor]

Incidentally, I always talk about it at the end of the Science Of Being Seen presentation as a proactive way of attempting to defeat Motion Camouflage.

[Horse]

As I happen to be online here and know where the article is...

http://the-ride-info.blogspot.com/2008/ ... ction.html

Thanks!

There's a set of 5 blog posts.

[Horse]

@Horse Please could you share the link to your article about how to use the Z-line to avoid SMIDSYs? My Google Fu couldn't find it

https://www.google.com/search?q="z+line ... ine+SMIDSY"

So what did you search for?

[Hot_Air]

I couldn't spell the word "Z"

[Horse]

Bwahahaha!

[MingtheMerciless]

Ta, interesting read.

I sort of do this already, maintaining a "he looks a bit of a hazard" riding style to make people pay attention to me.

[JackyJoll]

I’m not “wobbling all over the place-” I’m doing the zeeline!

[Scootabout]

Sometimes "waggling the wing-tips" will do. At others the "wasp manoeuvre". Finally the full zed.
It seems to be movement that attracts attention, but a bee-line towards the 'target', as mere looming, isn't enough.

[Scootabout]

I don't know if anyone else has seen this? I've not read it all, but it seems to suggest the triangle of light thing matters, hi viz doesn't. I couldn't see anything on Z line. There's reference to 'self movement' or similar, but that seems to refer to eg keeping moving at a give way sign.
https://pure.royalholloway.ac.uk/portal ... xport.html

[The Spin Doctor]

New paper to me... will read.

I am sure you have worked your way through the Science Of Being Seen website https://scienceofbeingseen.wordpress.com haven't you?

I looked at the 'triangle of light' https://scienceofbeingseen.wordpress.co ... tive-drls/

"SUMMARY – it’s long been recognised that a dipped headlight is not the most effective day-riding light… making the bike stand out has become a more difficult problem now cars also have day running lights… an effective DRL has to work under multiple conditions… DRLs are most effective at dawn and dusk but less effective in daytime conditions of bright sun… single headlights offer poor help to drivers in judging speed and distance… but DRLs also have to provide a ‘visual signature’ so drivers realise they are seeing a motorcycle and drivers are quick to recognise single headlights as belonging to a bike… twin lights may be mistaken for a car… the ‘triangle of lights’ is ineffective in terms of daytime conspicuity but help drivers judge speed and distance more accurately… unusual lights risk not being recognised as being fitted to a PTW… like hi-vis clothing DRLs are not ‘fit and forget’…"

If you want the short version of the site, there's a paperback too https://www.lulu.com/en/gb/shop/kevin-w ... pageSize=4 Cost covers upkeep of the site plus time reading papers!!

[Hot_Air]

There's reference to 'self movement' or similar, but that seems to refer to eg keeping moving at a give way sign.
https://pure.royalholloway.ac.uk/portal ... xport.html

What do you think the author meant by this: "The effect of additional scenic motion is shown to negatively affect car detection sensitivity, while simulated self-motion is shown to impair detection thresholds for motor vehicles."

If you want the short version of the site, there's a paperback too https://www.lulu.com/en/gb/shop/kevin-w ... pageSize=4 Cost covers upkeep of the site plus time reading papers!!

I highly recommend this book And it's one of those subjects that's easier to read in a book, not online.

[Horse]

I don't know if anyone else has seen this?
https://pure.royalholloway.ac.uk/portal ... xport.html

Now it might just be a coincidence ... There's a senior chap at Royal Holloway, called John Wann.

He was supervising at Reading when this was done:
https://pure.royalholloway.ac.uk/portal ... e9ff).html

And he has a long-term interest in this sort of stuff:
https://pure.royalholloway.ac.uk/portal ... =10&page=0

This (Nakayama, and Tofield and Wann) is interesting:
https://books.google.co.uk/books?id=3Bc ... nn&f=false
I know about this because 'Tofield' was my best man

The 'time to arrival illusion' supported this:



I believe that was also based on earlier work by Crilly & McGuire:



As far as lateral position goes there's been little research, in particular for movement such as Z Line I know of none.

There is one US paper comparing lateral position within lanes.
https://scholar.google.com/scholar?hl=e ... C47d3LFpIJ

Also:

https://ieeexplore.ieee.org/abstract/document/7410053 PDF linked

There is a Nottingham simulator study, but I can’t find it right now.

[Scootabout]

This (Nakayama, and Tofield and Wann) is interesting:
https://books.google.co.uk/books?id=3Bc ... nn&f=false
I know about this because 'Tofield' was my best man

For some reason this paragraph caught my eye:
"Motorcyclists - at least male motorcyclists - perceive themselves as more masculine, but motorcycle riding is associated with a significantly higher than normal rate of erectile dysfunction." (Page 658).

[Horse]

IIRC bicyclists suffer from the pressure of hard narrow leather seats against certain nerves ...

[Scootabout]

IIRC bicyclists suffer from the pressure of hard narrow leather seats against certain nerves ...

https://www.rido-cycling.com/

[The Spin Doctor]

What do you think the author meant by this: "The effect of additional scenic motion is shown to negatively affect car detection sensitivity, while simulated self-motion is shown to impair detection thresholds for motor vehicles."

Dunno. But the fact that the human eye is sensitive to lateral movement and not towards movement directly towards the observer (which merely leads to a change in relative size) is well-known from other fields, not least the military.

I highly recommend this book And it's one of those subjects that's easier to read in a book, not online.

Thanks

Appreciated.

There's also 10% off the paperbook price for a couple of days right now:

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https://www.lulu.com/spotlight/SurvivalSkills

All sales are useful right now... due to COVID interrupted income!

[MingtheMerciless]

I’ve waiting for Survival Skills to arrive but I’m getting a bit concerned that I may need the Penguin Book of motorcycle riding 1A first

[Scootabout]

Just ordered Science of Being Seen