SD is 80 now 75 is the norm in most states out side the city belt way .what I find crazy is they all still keep 40 as the min speed .
Right on, Ez!
Once upon a time, "wayback" circa 1965-1968 or so, there was a grande experiment in California, at least on the Bayshore Fwy between San Francisco and Palo Alto/Mountain View or beyond where there were
separate max & min speeds posted for each lane via electronic signs that could also be changed based on traffic conditions; faster lanes had higher minimums, with plenty of overlap to allow for safe transitions from lane to lane! It made a helluva lot of sense to me, but it didn't last long, and clearly didn't catch on.
IMHO, it's not the higher speed as much as a
mix of higher and lower speeds that causes problems. (Like that old geezer doing 60 in the left lane, with the left-turn blinker on — hey waitaminnit! … Oh that's not me; Whew, okay.)
That, and distracted drivers, whether fiddling with their cell phones, texting, reading the newspaper or a map, eating (far more than simply a sandwich in hand), shaving, "farding" (Yep, I've seen that too; look that up!
), trying to corral the unruly kid in the back seat, fiddling with the radio, you name it. (It kinda pisses me off all the jurisdictions passing "no texting while driving" laws. They just don't get it! It's distracted driving, of whatever kind, not just "texting"!)