Earlier quoted context omitted.
http://www.sehinc.com/news/truth-about-speed-limits-explaine... There is no guarantee that a speed limit will have any effect on driving behaviors. The fact is, when driving, most motorists choose a speed in which they personally feel both comfortable and safe.
https://en.m.wikipedia.org/wiki/Autobahn#Travel_speeds on a free-flowing section in 1992, the recorded average speed was 132 km/h (82 mph) with 51% of drivers exceeding the recommended speed. The autobahn has a long history proving that people feel comfortable and safe at excessive velocities.
But 80 miles per hour is not an abnormal speed on the highway.
The posted speed limit is so rarely enforced, that it still isn’t a deterrent. For instance, the speed limit on GA 400 is 70. But you’d better be in the slow lane if you only go 70mph.
https://www.11alive.com/article/news/local/commuters-respond...