Comment Re:Knee-jerk... (Score 2) 256
In some states you can request the evidence. In WI for instance you can ask to see the radar gun (with read speed still displayed) as well as the certification information for said gun. Generally this is a bad idea, since it will take you from "maybe get out of this with a warning" into "they will throw everything they can at you even if they can't get you for speeding".