Particularly given this format and the limited information available. Since your question focuses primarily on the stop, this answer will do the same; it will assume that you already know that you do not have to answer any questions the police may have for you. If this is a typical stop based upon reasonable suspicion alone, the police only have a limited amount of time to hold someone this could be about 20 minutes but, depending upon the circumstances, could be longer (there is no set time constraints). Reasonable suspicion which can be thought of as simply reasons for an officer to be suspicious - is a very low standard but it does permit the officer to stop someone and investigate. At this point, the police cannot search though, if they have reason to fear for their safety, they may frisk a person to determine if that person has weapons. If, after this brief detention, the officer does not have more than the reasonable suspicion that they began, or if, after this brief detention, the officer's suspicions are removed, the officer must let the person go. Of course, this assumes that there isn't more information available to the officer than known to the suspect; for example, what if the person pulled over matches the description of a known murderer or a recent crime? From the suspect's point of view, since the officer would not tell the suspect about this match, the officer would only have reasonable suspicion; but, the officer would already begin the detention with, at least potentially, more than just reasonable suspicion.
Answered on Jan 22nd, 2013 at 1:39 PM