JP5, in Blue they generally blocked a suspect on the street from running too far by having the detectives come from all angles. In the later police programs, they added chases to keep viewer attention and viewer growth.
Yeah, it is funny though.
"POLICE! You in the sports car on the other side of the parking lot!, get out and put your hands where we can see them!"
It may not be the most realistic, but none of them top The Andy Griffith Show IMO.