Don't you'd think the local police would lie? the cops around here are actually big enough dicks to do that. i actually got pulled over and givin a warning for revving my engine to 4.5k rpm, saying it was display of power.
That's why you can take them to court and pled not guilty.
I got pulled over for no front plates, only one headlight, changing lanes and not turn lights and etc...all those with my radar turned on and alarming because dumb cop didn't turn off his radar gun... and still got no ticket or warning why i have a radar detector. Besides if there's no law or information written from the DMV information drivers that radar detectors are illegal then it's legal.