it is for YOU to give probable cause for a traffic stop ! by that hime just being behind you will make you nervis wether you'v done anything wroung at that point or not SO givin that if you drift left of center , weave, no turn signal,several reasons can be considered AS probable cause I can follow someone in my priviate car car the same way as i do in the patroll car an get the same reaction just the presents of the COP being behind you will make you nervis to give him probable cause if he wants to stop you for something !! 15 yr law enforcment.
