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R&T did (and/or quoted) a study years (and years) ago that showed that, on major thoroughfares, it is NOT speed that causes accidents or "kills", it's delta speed -- speed differences.
So, if the posted limit is 75, which you're doing, and some dfbroad is doing 55, that delta is more dangerous than if you were both doing 75, or 85, etc.
The geeks at NHTSA knew this as well, but figured if the limit was lowered to 55, you're essentially squashing the delta.
FWIW, moment of inertia is for a rotational inertia -- like mass for linear motion -- but specified for a chosen axis of rotation.
JP
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2003 SuperCharged Frontier ../.. 1979 930 ../.. 1989 BMW 325iX ../.. 1988 BMW M5 ../.. 1973 BMW 2002 ../..1969 Alfa Boattail Spyder ../.. 1961 Morris Mini Cooper ../..2002 Aprilia RSV Mille ../.. 1985 Moto Guzzi LMIII cafe ../.. 2005 Kawasaki Brute Force 750
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