Quick question? Can you write a random paper on the challenges of radar sensors in CHP cars and "reference points?" I want to challenge an argument about a CHP officer driving the opposite way and then stopping my friend. Although the weather conditions were semi-good, he was coming from a small incline while my friend was driving down the incline. He said I used a reference point then I turned on my radar? Although his car was possibly 100 yards and the radar only goes 11 degrees while fanning I think he was wrong to have made that declaration. Also he didn`t give me chance to ask him if he was certified to use the radar and if it was calibrated. When we were stopped I asked him "how did you determine the speed/" because the speed was set at 80 miles (I didn`t tell him that). He replied"I used reference points and the turned on my radar." There wasn`t any trees or post to reference to speed also he was coming from an incline.