[Sweet Land]

I guess your solution would be to take down the guy and handcuff him till you could determine if a crime had been committed.

No, that would not be necessary in order to ask the girl, "Was this man hitting you?"

I see you're now dodging the whole question of determining if a crime had been committed.

And why was knowing his name necessary in order to ask the girl?

The guy approached the cop. The cop has a right to know who is approaching him and why he approached him.

Baloney. The guy had as much right to be walking along the shoulder as the cop did; if the cop was concerned, he needed only to say, "Stand back, sir, I'm conducting an investigation."

[cinFLA]

The cop was following state law. You have a problem with the cop following the law?

[cinFLA]

Baloney. The guy had as much right to be walking along the shoulder as the cop did;

Yea. Did you see him wandering and rambling about how his car was parked legally? The guy was a real idiot. Notice the nice skid marks as he parked the truck.