I think they're fine the way they are. In order to make speed limits higher, they need to make it more difficult to get a driver's license. A lot of the people on the road in the area I live in would not be able to handle speed limits higher than what they are now because they're idiots. There are always people following too closely (one of my major pet peeves) and doing stupid things like shaving or putting on makeup in the car around here. Can't tell you how many times I have seen a person in the fast lane on the freeway doing 50 mph with people screaming by them on the right, I pull up beside them, look down and see them reading a book while driving.
