I guess I should add this even if you do get a radar.
1. Dont speed over hills and if you do watch the cars in front of you. If they are all braking at a certain point chances are there is either a cop or another good reason they are all trying to slow down at the same time.
2. See above for going around tight curves
3. As soon as you go under an overpass look up on the entrance ramp to see if there is a cop using radar way up there. If you catch it fast you may be able to slow down quick enough.
4. Take a good look under overpasses before you get to them. On a sunny day it can be a b**** to see a cop sitting in the shade under an overpass until it is too late
5. This doesnt pertain to my area, but I have seen cops in other areas sit on top of an overpass looking down at oncoming traffic. When they catch someone the get on the highway and catch up.
6. MOST IMPORTANT is know your area and where the cops sit. On my commutes there are only about 10 places I have ever seen cops sitting and I know them all so I make sure to look well ahead or slow down for that small stretch untul I can be certain there is no cop there
Think ahead while you are driving and know your surroundings and chances are very very good that you won't get caught with or without a radar