Epetruk said:David Martin said:On 18/2/05 2:02 pm, in article [email hidden],
"Ian Smith" <[email hidden]> wrote:
Quoted message said:Quoted message said:Quoted message said:On Fri, 18 Feb 2005, Simon Mason <[email hidden]>
wrote:
Quoted message said:Quoted message said:Quoted message said:> Yes, I have no idea what I look like from behind, so when I leave
> work at 2200 I make sure I ask my colleagues in their cars who
> pass me on their way home how visible I was.
Quoted message said:Quoted message said:Quoted message said:You mean "does my bum look big in this"?
Quoted message said:Quoted message said:Does my bum look BIG in this? surely... [1]
..d
[1] http://www.bikereader.com/contributors/misc/big.html
Quoted message said:Interesting, this theory of BIG.
Quoted message said:However, isn't there a thin line between being visible enough to avoid being
hit and being so visible that drivers stare slack jawed at you in
astonishment, thereby losing concentration and hitting someone else
I recall the woman a few years ago who cycled up Edinburgh's Leith
walk wearing either nothing but a very tight fitting Lycra body
stocking, or maybe just green paint. She was clearly quite fit; I
never did manage to get close enough to decide conclusively between
the Lycra and the paint hypotheses. But she caused serious disarray in
the traffic on both sides of the road, and when she went round the
very large roundabout near the top of Leith Walk she caused such
derangement of the traffic that for some time after she was gone cars
were still honking at each other trying to get moving again.
It occurred to me at the time that all this visibility stuff based on
fluorescence and reflection is missing a very basic psychological
point. There are two ways of making yourself very visible to car
drivers. One is to look like a policeman, the other is to look like a
naked woman. You wouldn't have to *be* naked, or a woman. A large pair
of joke shop breasts would do the trick. I'm sure anyone who has tried
it will confirm that for getting noticed instead of ignored looking
like a copper or a naked lady beat the pants off looking like a road
hole digger.
It's basic psychology of vision. The SMIDSY problem isn't registering
a large effect on the retina, it's attracting the driver's *conscious*
attention. Below the level of consciousness there are powerful filters
at work deciding what is important enough to alert the bosses in the
conscious attention boardroom of the mind, and what isn't. To counter
the "only a cyclist" filter concept using bright colours and lights
are no use, you have to counter it with another powerful filter
concept with positive psychological attention value.
If we needed bright colours and lights to notice important things we'd
never have been able to become good hunters. The SMIDSY problem isn't
a problem of "uncamouflaging" the cyclist, it's a problem of changing
the *significance* of the cyclist.
For example, when the Netherlands introduced the legal presumption of
driver fault and cyclist innocence in traffic accidents (unless there
was positive evidence to the contrary), car drivers protested
strenuously that it was unfair because so many cyclists crept around
in camouflage and threw themselves in front of cars in a totally
unavoidable fashion, and this new legislation would clearly encourage
them in their evil ways instead of punishing them. Yet oddly enough it
had an immediate and dramatic effect on the rate at which cyclists
were hit by cars, simply because it changed the *significance* of a
cyclist.
--
Chris Malcolm [email hidden] +44 (0)131 651 3445 DoD #205
IPAB, Informatics, JCMB, King's Buildings, Edinburgh, EH9 3JZ, UK
[http://www.dai.ed.ac.uk/homes/cam/]