On Jan 22, 2008 5:02 PM, Simon Hewison <[EMAIL PROTECTED]> wrote: > Dave Stubbs wrote: > > And what is the exact SI equivalent of 30mph? > > According to the current UK Highway Code, 30mph = 48km/h.
It's wrong ;-) > > > > I can give you an approximation: 48.28032km/h. > > What happens though if everyone sticks in 48 instead.. close enough > > isn't it? > > If the UK Department for Transport ever finally get around to finishing > the > metrication project that has been going on since 1862. then 30mph will > probably become 50km/h, 60 would become 100km/h, 70mph would become either > 110km/h or 120km/h (it's already been lowered, and has become 100km/h for > buses, which now need speed limiters set to 100km/h). > That's all a pretty good explanation of why we need to be adding mph units to keep the data sane! Dave
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