A Miranda Warning is a statement made by police when he is about to question a suspect on a case. Generally it includes that the subject has the right to not answer any questions or stop answering...
If you are not free to leave.Another View: Requirements to have your Miranda Rights read:(1) The individual is under arrest, and(2) Interrogation of them is about to begin.
Because if it is not given under the proper circumstances, any information or evidence arising from the arrestees interrogation may be ruled inadmissable in court.