Quote:
Originally Posted by #-3
Many highways in the US are at 80 MPH (~129K) and it has no meaningful impact on the safety of the road while the majority of people on those roads drive +/-135KPH. 100 or 110 is just a number we set to make it look like we are setting safety limits, with no consideration what so ever for what an effective speed would actually be.
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Many is an interesting word.
A few states (8) have interstates which are posted at 80. Interstates which are fully access controlled. This has a dramatic difference in road safety.
No state has a non-access limited road posted at 80MPH.
No state has a non-access controlled road posted at greater than 70 MPH except Kansas and Texas.
Until you close off the at grade intersections along the 1 and the 2 we exceed the US standards for highway speeds across states.
https://www.iihs.org/topics/speed/speed-limit-laws
Even once that is done the best you could call those roads would be other access limited roads in which only Kansas, Maine, Utah and Texas have posted limits of 75MPH the remaining are 70 (112) or less.
So I agree with what the data from the US shows that US interstates are a special class of road that have minimal in Canada comparable and certainly none in Alberta. The remaining speed limits on our major and minor highways are set comparably with 65 (104) being the rough equivalent of 100 (62.5)