Tim Ward wrote:OK. Let's consider a site with an intrinsic accident rate
> Let's see a proof of that, please? Based on the actual figures for the
> actual roundabout, please, not the nonsensical stuff about 0.2 accidents per
> year we've seen posted here earlier (complete gibberish, that, as no area
> with 0.2 accidents per year would get anywhere near the top of the priority
> list so the statistical significance in fluctuations of samples with an
> average of 0.2/pa are of no relevance whatsoever)
of 10/year. (This isn't far off the Mitcham's Corner
statistics, which have led to extensive works.) Some
traffic work is done which increases the intrinsic rate
to 15/year. Here's a possible accident history:
Accidents before, by year:
Accidents after, by year:
Suppose that some work is done following the year in
n P(n, before) P(n, after)
This is pretty disastrous. But don't worry, apparently in
What about in the three year case? Let's say changes are
n P3(n, before) P3(n, after)
This is a bit better -- by comparison. But note that if you
You must Sign in before you can post messages.
To post a message you must first join this group.
Please update your nickname on the subscription settings page before posting.
You do not have the permission required to post.