Flash your lights twice for radar!
around here they hate when ppl warn others about them but as soon as someone sees a cop in a new place its all over the county in about 5 mins lol and then they hate some ppl hitting side streets and taking off and hiding themselves ( ive done it myself very funny cause i was driving my lil brothers 5.0 mustang and the cops drive impalas here i hid in a parking lot and watched him drive past smacking his steering wheel hahaha and also a quick note call me an *** but if youre worried about cops ummm dont speed? i believe thats how youd avoid them