Re: Adding reflective material to my gloves


Danny Colyer wrote:
> I asked:
> >>What techniques are safer than those described in Cyclecraft, and why
> >>would one not always use the safest /practical/ techniques?
>
> and Pete Biggs responded:
> > When one can't be bothered when one thinks the risk is low. My signals
> > naturally vary in length and boldness depending on how risky I think the
> > situation is and how well I *think* my signals can be seen.
>
> Fair enough, that'll be a difference between our riding styles then. My
> signal boldness is binary. If I'm confident that no-one will benefit
> from a signal then I won't bother, otherwise it'll always be a bold,
> clear signal.

This paper was published in the second last issue of Accident Analysis
and Prevention:

Sometimes it may be better to just signal and not make eye contact ...

quote:

Signals are informative but slow down responses when drivers meet
bicyclists at road junctions

Ian Walker,

Department of Psychology, University of Bath, Bath BA2 7AY, UK

Abstract

Three experiments used a laboratory analogue to the task of driving to
look at drivers' responses to encounters with a bicyclist at a
T-junction. In particular, a comparison was made between the bicyclist
indicating an upcoming turn with an arm signal, an informal signal of
intent, or no signal. Overall, arm signals worked relatively well to
inform drivers of the bicyclist's intentions and were easier to
perceive than informal signals. It was also found that simple failures
to react to the bicyclist in time were more common at shorter thinking
times whereas incorrect positive responses were unaffected by thinking
time. Most interestingly, these experiments showed that arm signals
often slowed down the participants' decision-making processes,
leading to a lower probability of their stopping in time when the
bicyclist was at risk. Moreover, the same was true for informal signals
in which there was eye-contact between the bicyclist and the
participant. It is suggested that these effects come about because both
arm signals and eye-contact are communicative acts and therefore invoke
extra stages of involuntary cognitive processing in the drivers,
thereby slowing their reactions.

unquote:

...d

.

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