dcb, thanks for the link to metrompg's site. Some information I hadn't seen before ... but I'm still not impressed with the savings. Unless it's at least 10% or more, I just don't see a compelling reason to see a national law limiting speed ... especially when more fuel is wasted in other ways.
"The arguments about enforcement apply to each and every single traffic law (and most laws in general) so are not especially relevant here."
Not true. Most laws are about right and wrong, harming others, etc ... This one would be specifically about economy ... and if you can't get compliance (a great deal of it) it does absolutely no good at all.
jamesqf, thanks for that tidbit ... and I agree that it depends, depends, depends ... When driving for maximum mileage, I will exceed the speed limit going down a hill to build up cheap energy to coast or climb the next one with a reduced penalty. In that sort of instance, I can get better economy than if I set the cruise at 55mph the whole trip.
instarx, Thanks for your tidbit as well. As speeds go up, the penalty increases so I would expect the economy difference between 55mph - 65mph to be just slightly less than the difference between 75mph and 65mph. The number is significant if you are an economy nerd like most of us here ... but not enough to warrant a national law (IMHO).
__________________
--- Bror Jace
|