Yes exactly, the "regular" police, PN in grey uniforms they can stop you an ask for a "propina" but the Digisett police will never ask you for anything, and I guess you could even get in trouble if you try, as they would in that way consider it as a bribe to not get a ticket. But I've been stopped a couple of times during night time during the years being here. A couple of years ago, after driving one of my wife's friends back to her place on the way back we got stopped by two young PN officers, and by the look of it they were probably going to rob us, but because my wife was with me and we also had our newborn with us they just said hi and just let us go. So at night they can be "difficult"