On 1/4/07 3:59 PM, "Darrell Noakes" <cyclist@...> wrote:
> ...There is some newer research that concludes
> motorcyclists are more conspicuous when motorcycles are equipped with
> pulsating headlamps, but I have misplaced my references on the subject.
> However, most flashing or blinking bicycle headlamps are nowhere nearly as
> bright as motorcycle headlamps, nor do they provide the same side-to-side
> conspicuity, so I would be skeptical about extending motorcycle conclusions to
> cyclists.

Motorcycle headlight modulators cycle between high and low beams, not
between on and off. The modulation feature is disabled at night so there's
never a period of darkness ahead. Most bicycle headlight blinkies I've
noticed have a simple 50% duty cycle (at whatever Hz) so an oncoming driver
is interpolating the cyclist's position half the time.

Thanks for all the references! I'll do some reading this evening.