On Wed, 8 Oct 2003 22:50:46 +0100, Geoff Bowles <
[email protected]> wrote:
> I don't cycle much at night, but I drive a lot, and agree about the effectiveness of reflective
> shoes, ankle bands etc - they stand out very well, and make it obvious that it's a bicycle ahead -
> even when visibility is obscured by headlights coming the other way
>
> On the other hand one of my pet hates is cycles with just a flashing light at the rear. Perhaps
> it's just my eyes, but it's very difficult to judge the distance to a flashing light when there
> are no other clues - especially when you have to pick it out from lots of other red lights in
> traffic. If I only have one light on my bike I make sure it's set to "steady light" and that my
> clothing will stand out - including the reflective bits on my bright yellow cycling shoes. If I'm
> planning to ride at night (as opposed to being caught out by darkness) I also use a flashing
> light, but fitted some way from the steady one to provide following drivers with something to
> judge size and distance
>
Actually, it is very hard to judge the distance to a single light. The problem with flashing lights
is that people see them about four times further away and it is harder to judge closing speed from
200 yards than from 150 feet.
Tim.
--
God said, "div D = rho, div B = 0, curl E = - @B/@t, curl H = J + @D/@t," and there was light.
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