I think speed limits should be higher, but the traffic should be better regulated. The biggest issue I notice on Interstates are people not knowing how to drive in an intelligent, corteous manner. All the speed in the world won't fix the idiocy of humans.

People hold up the left lane, travelling the same speed as the traffic in the right lane. This causes traffic backup.

People don't properly change lanes and don't read traffic.

People don't indicate.

People don't get out of the right lane (when it's logical to do so) when there is a heavy merge from an on ramp. They get all the way down to the merge, then brake and cut over to the left. Get over early, then go back to the right once you passed the entering traffic.

In Vermont, it's customary for the cops to give eveyone an approximate 10 mph "grace-margin", and this arrangement is widely known and followed.  So a 65mph limit really means 75mph; a 25mph limit really means 35mph, and so on.  Even if some exuberant deputy nails you for eight miles over the limit, you can go to court and if you're polite and respectful you'll likley get it thrown out. 

And in certain areas the grace margin seems even higher.  I've been on 495 near Boston going 80mph in a 65mph zone with most the herd slowwwwwly drifting past me at around 82mph (Mom woulda freeked).

Therefore I'm curious if these uber speed limits in Texas are rigidly enforced or if the real number is even higher than what's posted.  Any Lone-Star drivers out there care to comment?  Is an 80mph limit in Texas really 80mph or is it more like 85mph or 90mph?

Raise it to 100 MPH, those redneck idiots are no great loss to the gene pool, yeeehaaa

splat !!!