On 4/03/2016 12:07 PM, Mike Borgelt wrote:
I doubt you'll find glider crash rates per km. Hours, yes.
What is the average speed of a motorcycle on the roads. I'll say
60km/h based on driving a car with a car computer a few times.
Off the top of my head, I couldn't say for sure. I don't have time to go
trawling through the literature right now, but I'd guess it might be a
bit higher than for cars, given the proportion of motorcycle use that is
recreational (as opposed to commuting in traffic).
That gives you around one crash per 1600 hours or so for motorcycles.
I guess this is crashes not fatals? If so sounds about right for
gliders too.
Yep, that's crashes, not fatals. Finding papers that have exposure data
*and* fatality data for motorcycles would take a bit more time (I didn't
see any during my quickish search earlier); and the nature of the beast
is that just copypasting the exposure data into someone else's fatality
rate calculation is prone to give you wildly inaccurate results, due to
differences in sample characteristics, methodology, etc, etc. (These
things are never easy.)
Teal
Mike
At 10:58 AM 3/4/2016, you wrote:
On 4/03/2016 10:44 AM, DMcD wrote:
And I don't think you could compare gliding with motorcycle riding
(racing maybe). In terms of deaths per hundred thousand rider or
comp pilot hours, you'd find a difference of several orders of
magnitude. We have whatâ 2500 pilots active in Australia? And how
many die each year? 1-2?
FWIW, I can help a bit with that question. Good road traffic exposure
data can be a bit hard to come by, but a bit of searching found a
paper* reporting motorcycle crash rates for NSW from (I think) 2004,
and they said: "The mean crash rate (based on self-reported crash
involvement) was 0.96 crashes/100,000 km".
Now, if anyone has crash data and exposure figures for glider pilots
(measured in km travelled) then we can see how glider fatalities
compare with motorcycle fatalities, should we so desire.
Teal
*Source: Harrison, W. A., & Christie, R. (2005). Exposure survey of
motorcyclists in New South Wales. /Accident Analysis & Prevention/,
/37/(3), 441-451.
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