[yugioh3]

65mph is plenty fast. going beyond 70/75 is diminishing returns in the safety of other drivers, not to mention worse greenhouse emissions.

a crash at 80+ is so much worse than one at 65. and American highways are not the Autobahn. different design and engineering.

[dotancohen]

The energy (damage) of a crash is proportional to the square of the speed. Therefore a crash at 80 units per hour has over 1 and a half times the amount of energy, and thus one and a half times the damage, as one at 65 units per hour.

[rafram]

If anything, American highways are wider and straighter than the Autobahn.

[dangus]

But they are less well maintained and with fewer safety features, built to a lower cost per mile.

Being straighter is actually bad for safety (highway hypnosis).

You’ll find long stretches of interstates with no guard rails as well as state highways with direct intersections with rural roads.