Any area where departments have money they have cars that just run ALPS and cops pull over stuff that pings. Could be expired registration/inspection, could be

Any area where departments have money they have cars that just run ALPS and cops pull over stuff that pings. Could be expired registration/inspection, could be cars flagged stolen. While they won't actually drive around looking for the car if it goes around enough and has stolen/invalid plates it will get pulled over. As for chasing cars? Depends on department policies. Out in my region they chase in almost every situation except for cars driving wrong way in divided traffic. Has lead to stuff like cops plowing cruisers into the trees trying to chase a motorcycle rider through windey roads.