On Sun, Feb 22, 2004 at 02:23:38PM -0800, Paul Johnson wrote: > On Sun, Feb 22, 2004 at 05:20:48PM +0000, stephen parkinson wrote: > > assume perfect driver, what is difference in stopping distance 30mph cf > > 35mph > > According to the ODOT Driver Manual[1], page 39 (in the PDF, 33 on > printed page), you add another 80 feet to your stopping distance going > from 30 to 40 MPH. I also learned that Oregon's speed limit silently > raised from 65 to 70 MPH in this edition of the driver's manual... The UK's Highway Code calculates stopping distances from the equation: d = v + 0.05(v^2) (d in feet, v in mph) which gives an increase, from 30mph to 35mph, of 21 feet 3 inches - so the advert's claim is 3 inches short :-) It also gives you "fudge factors" of x2 for wet and x10 for icy conditions. Doesn't give you one for locking the wheels though... -- Pigeon Be kind to pigeons Get my GPG key here: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x21C61F7F
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