Okay, maybe I'm stating the obvious. When your radar detector goes off, if you are the primary target, its too late. Your speed has already been displayed on the radar unit. I dont care how fast you slow down. So, to use it to avoid being detected speeding only works some of the time. You will however, pick up warnings when other drivers are the target and it will give you the opportunity to adjust your speed. As far as laser speed detecting units there is very little to zero "bleed" over. So if your laser unit goes off, your pretty much toast. Yes, Law Enforcement Officers know this. One of the techniques used is to delay using the speed detection unit until some of the slower speeders have passed to hit the faster secondary speeders. Also, speed detection radars are only used to verify your speed after the Law Enforcement Officer has visually estimated your speed. With training and practice you can be within +- 2mph, every time. To me the use of speed detection units is more work and worry than they are worth. Im not saying I dont like to wind it out a little, I do. I know if I'm caught its time to pay the piper. Just keep in mind if you drive in excess of the speed limit its a crap shoot, with or without a detector. If you dont want a ticket, dont drive at excessive speeds. If you do, just accept the fact that you may receive a ticket.