I agree those doing 90 are probably not worrying about tickets but if most of the traffic is doing 80 then it appears to be unlikely you would get a ticket for doing 80-82. So people tend to stay around that speed. For some cars and drivers that may be the limit they feel safe at but many drivers would go faster if they felt the risk of a ticket was minimal.
Craig
Let's say hundreds of people all hopped in go karts with a top speed of 40mph and we went to an open track and agreed that someone would be "the cop". If we got pulled over for doing anything more than 10mph, we would have to pay a real fine of actual US Dollars.
So we all go driving around at 10mph, but guess what.. it gets boring after awhile, so some of us start moving a little faster while the cop isn't looking. Then we notice the cop doesn't care if we do 15mph so eventually most folks are doing 15, then 20... Then something happens. A guy does 25mph and doesn't get pulled over and a few others start doing the same.
Now they're tearing around the track at 25mph and everything still seems to be in control. Another guy decides to wick it up to 30mph, but he takes a turn too fast and goes spinning off the track and gets injured. He has to pay for the damage.
At this point, the cop isn't actually doing his job of enforcing the letter of the law, he's letting everybody slide. So what happens if they raise the speed limit from 10mph to 20mph? The answer is that nothing really changes. 30mph is still too dangerous for most drivers and so they go slower than that.
Do I have a problem with Kyle Busch driving 100mph on an open road? Not at all. Do I have a problem with a properly trained 18 year old doing the same? No, I really don't. Do I have a problem with young punks thinking they have mad skillz and taking that same road at 120mph? I certainly do, but the speed limit ain't going to change that.
The speed limits haven't much changed since the invention of airbags, radial tires, seat belts, crumple zones, improved headlights, ABS, and better suspensions. People aren't driving more recklessly now than they were 20 years ago, the difference is that the cars are more capable of high speeds and the speed limits haven't been adjusted to reflect that.
Again, we need to go back to speed limits that are developed by engineers, not politicians.