And here's an article telling you why and giving many examples.  I'd say it's a great article, but in fact, it's a sickening article because this is still America.  Or at least it was the last time I checked, but we no longer appear to have any rights at all, and the excuses we get from the police, judges, lawyers, etc., are wearing very thin.  

https://www.lewrockwell.com/2017/11/john-w-whitehead/nervous-about-traffic-stops-i-am-you-should-be-too/