Yeah, I guess. But we're entering a grey area. Mostly likely this dude was all over the road.
I do not see it as a gray area, but I do agree that most likely the officer had other driving patterns that he used. An officer has to be careful and make his decision to stop without waiting too long, or the drunk could become involved in an accident. This is the tough balancing act they go through every shift.
But if it's simply not signaling, hmmmm. If it's pretext, there could be a problem. I'm thinking of the sucessful mostion to supress I saw where the police stopped a car for pausing in the road to speak to a pedestrian. The pedestrian was leaning in the passenger window of the car in an area known for drug deals here. Lo and behold, they had drugs!!
The driver was charged with a parked car in a thruway violation. It was so obscure. It would be analogous to ticketing someone for not using a signal. If the police never ticket poeple for this then it raises eyebrows.
Not signaling is a violation with a penalty, not a pretext stop. It is not if the police "never ticket" for it, it is do the police routinely stop for this violation, if they do (ticket or not) it is a valid stop.
I mean, imagine you're driving in your subdivision and your neighbor runs out to your car and leans in the window to talk about tennis on Saturday. Can the police swoop in, charge him with jaywalking and you with a parked vehicle in the roadway...then execute searches or develop cause for other arrests? And if they subsequently found, let's say, an illegal radar detector in the car should they be entitled to use that evidence?
No, but if an officer pulled up and said, "hey guys get out of the street", then noticed that my speech was slurred, and got a wiff of alcohol on me, then he would have the PC necessary to investigate further. To answer your other example, no you cannot search a car without PC for the search, not the same as PC for the stop. If they do develop other cause for arrest, like I said about my speech, etc., then arrest me, then yes they can search my car.
I realize the police know, more often than not exactly, what is going on. Give me a break. The problem is balancing things so we're not to the point of being a police state. They could never stop a pedetrian and search him in that way. So why would they allow them to use the more obscure tedium of the traffic laws to do just that. It would lead to some purverse results.
Where did a search enter this discussion? If they have PC for a stop, develop PC for an arrest, then yes they can search. I never said that they could search him for not signaling, but they can stop him for it and investigate further. Your making this more difficult than it needs be. A lot of what you are saying is correct, but what I am saying is that one only needs PC for a stop to make the stop. You do not have to have all the evidence of a DUI before stopping the car.
I could go look for some turn signal only cases...but i'm off to the pool. Trying to enjoy a summer off from all that here!!! LOL. I think you could be right in some jurisdictions BigD, maybe not in others (I'm saying on this narrow turn signal only as cause), but who knows I'm no authority.