Driving with your hazard flashers on

I talked to the state patrol and it is illegal. They said get his license number and call 911. When I said I didn't want to call 911 for a non emergency they advised me that it was the proper thing to do and was okay. They said they would contact him to find out more information or pull him over if an officer is near the area.

The part that bothers me is he constantly changes lanes and then exits, but nobody has any idea what he is doing unless he brakes. Not that you can always tell what everyone is going to do, but this adds to the confusion and effects traffic.